[INFO] updating cached repository https://github.com/brinchj/rustfest-fastware
[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] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4fc8894a9efddf3a679558b3ef32fb997dbd4772
[INFO] checking brinchj/rustfest-fastware against master#6250d56355d72264ece721e8d0dc95b16a6824b1 for pr-68350
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrinchj%2Frustfest-fastware" "/workspace/builds/worker-14/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/brinchj/rustfest-fastware on toolchain 6250d56355d72264ece721e8d0dc95b16a6824b1
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6250d56355d72264ece721e8d0dc95b16a6824b1" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/brinchj/rustfest-fastware
[INFO] finished tweaking git repo https://github.com/brinchj/rustfest-fastware
[INFO] tweaked toml for git repo https://github.com/brinchj/rustfest-fastware written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/brinchj/rustfest-fastware already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6250d56355d72264ece721e8d0dc95b16a6824b1" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+6250d56355d72264ece721e8d0dc95b16a6824b1" "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] 94ef485e9ab371e3494b8f795230c586b3edba88a8b302e8f1558d539cc5fd33
[INFO] running `"docker" "start" "-a" "94ef485e9ab371e3494b8f795230c586b3edba88a8b302e8f1558d539cc5fd33"`
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]    Compiling rustc_version v0.2.2
[INFO] [stderr]     Checking combine v3.2.0
[INFO] [stderr]    Compiling im v10.2.0
[INFO] [stderr]     Checking rustfest v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/lib.rs:387:17
[INFO] [stderr]     |
[INFO] [stderr] 387 |                 black_box(eval(&line, &mut env));
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.03s
[INFO] running `"docker" "inspect" "94ef485e9ab371e3494b8f795230c586b3edba88a8b302e8f1558d539cc5fd33"`
[INFO] running `"docker" "rm" "-f" "94ef485e9ab371e3494b8f795230c586b3edba88a8b302e8f1558d539cc5fd33"`
[INFO] [stdout] 94ef485e9ab371e3494b8f795230c586b3edba88a8b302e8f1558d539cc5fd33