[INFO] updating cached repository https://github.com/Tomboyo/mastermind-rust
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] [stderr] From https://github.com/Tomboyo/mastermind-rust
[INFO] [stderr]    683ef61..62a2bdf  master                -> master
[INFO] [stderr]    50c23b3..3047b8c  suboptimal-eager-skip -> suboptimal-eager-skip
[INFO] [stderr]  * [new tag]         0-init                -> 0-init
[INFO] [stderr]  * [new tag]         1-reference-passing   -> 1-reference-passing
[INFO] [stderr]  * [new tag]         2-isomorph-cache      -> 2-isomorph-cache
[INFO] [stderr]  * [new tag]         3-eager-pruning-by-rank -> 3-eager-pruning-by-rank
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 62a2bdf70bb7cd97972be7f0e0d3c1987a10735d
[INFO] checking Tomboyo/mastermind-rust against master#ba72b15666b2491415aec703a02c2364fe5e2790 for pr-71140
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTomboyo%2Fmastermind-rust" "/workspace/builds/worker-11/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Tomboyo/mastermind-rust on toolchain ba72b15666b2491415aec703a02c2364fe5e2790
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Tomboyo/mastermind-rust
[INFO] finished tweaking git repo https://github.com/Tomboyo/mastermind-rust
[INFO] tweaked toml for git repo https://github.com/Tomboyo/mastermind-rust written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/Tomboyo/mastermind-rust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c7837fb655f223a26516daf00262513fb9a5e20b86ca1fcf71571c66abe7f761
[INFO] running `"docker" "start" "-a" "c7837fb655f223a26516daf00262513fb9a5e20b86ca1fcf71571c66abe7f761"`
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking mastermind v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.91s
[INFO] running `"docker" "inspect" "c7837fb655f223a26516daf00262513fb9a5e20b86ca1fcf71571c66abe7f761"`
[INFO] running `"docker" "rm" "-f" "c7837fb655f223a26516daf00262513fb9a5e20b86ca1fcf71571c66abe7f761"`
[INFO] [stdout] c7837fb655f223a26516daf00262513fb9a5e20b86ca1fcf71571c66abe7f761