hydra-eval-jobs returned exit code 1:
warning: ignoring --gc-roots-dir (just supported for compatibility)
still evaluating after 5s… 10s… 15s… 20s… 
info: evaluation could not finish due to failed IFD build
info: IFD build failure prevented build of dependents { /nix/store/n41kvv0c2pm6f9kvmm6sf396hqhv7bx9-source-repository-package.drv, /nix/store/jgbc5sc4pn1cqbbw5w2x22sf5aksqv4s-haskell-project-plan-to-nix-pkgs.drv }
got build log for '/nix/store/kc4rca25vl9pjvgwar7q562ysxda000g-cardano-ledger-a549a45.drv^*' from 'daemon'

nix log /nix/store/kc4rca25vl9pjvgwar7q562ysxda000g-cardano-ledger-a549a45.drv^*
exporting https://github.com/input-output-hk/cardano-ledger (rev a549a45ef73ad9d71903ad1816f2b53360ab310d) into /nix/store/di5w1224acq8yfqr16lz2gq78iqd5r7p-cardano-ledger-a549a45
Initialized empty Git repository in /nix/store/di5w1224acq8yfqr16lz2gq78iqd5r7p-cardano-ledger-a549a45/.git/
remote: Enumerating objects: 2157, done.
remote: Counting objects: 100% (2157/2157), done.
remote: Compressing objects: 100% (1697/1697), done.
remote: Total 2157 (delta 278), reused 975 (delta 134), pack-reused 0 (from 0)
Receiving objects: 100% (2157/2157), 24.36 MiB | 6.34 MiB/s, done.
Resolving deltas: 100% (278/278), done.
From https://github.com/input-output-hk/cardano-ledger
 * branch            tdammers/for-mlocked-kes-consensus -> FETCH_HEAD
 * [new branch]      tdammers/for-mlocked-kes-consensus -> origin/tdammers/for-mlocked-kes-consensus
Switched to a new branch 'fetchgit'
removing `.git'...