[INFO] updating cached repository https://github.com/hiblom/haddock
[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] 83934568ce328ef17b73ddf48c2938618a63071f
[INFO] checking hiblom/haddock against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhiblom%2Fhaddock" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hiblom/haddock on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/hiblom/haddock
[INFO] finished tweaking git repo https://github.com/hiblom/haddock
[INFO] tweaked toml for git repo https://github.com/hiblom/haddock written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/hiblom/haddock already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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] 8d27104a74de8816930497783d2bb35f3fd92b5ad1d0208d848cf0a4eaf297bb
[INFO] running `"docker" "start" "-a" "8d27104a74de8816930497783d2bb35f3fd92b5ad1d0208d848cf0a4eaf297bb"`
[INFO] [stderr]    Compiling failure_derive v0.1.4
[INFO] [stderr]     Checking rustc-demangle v0.1.11
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking nix v0.11.0
[INFO] [stderr]    Compiling syn v0.15.23
[INFO] [stderr]     Checking serde_json v1.0.34
[INFO] [stderr]     Checking criterion-stats v0.3.0
[INFO] [stderr]     Checking itertools-num v0.1.3
[INFO] [stderr]     Checking csv-core v0.1.5
[INFO] [stderr]     Checking regex v1.1.0
[INFO] [stderr]     Checking backtrace v0.3.13
[INFO] [stderr]     Checking csv v1.0.5
[INFO] [stderr]     Checking handlebars v1.0.5
[INFO] [stderr]     Checking ctrlc v3.1.1
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling serde_derive v1.0.84
[INFO] [stderr]     Checking failure v0.1.4
[INFO] [stderr]     Checking criterion-plot v0.2.7
[INFO] [stderr]     Checking criterion v0.2.7
[INFO] [stderr]     Checking haddock v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variant is never constructed: `Upper`
[INFO] [stderr]   --> src/transposition_table.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     Upper}
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Upper`
[INFO] [stderr]   --> src/transposition_table.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     Upper}
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 49.52s
[INFO] running `"docker" "inspect" "8d27104a74de8816930497783d2bb35f3fd92b5ad1d0208d848cf0a4eaf297bb"`
[INFO] running `"docker" "rm" "-f" "8d27104a74de8816930497783d2bb35f3fd92b5ad1d0208d848cf0a4eaf297bb"`
[INFO] [stdout] 8d27104a74de8816930497783d2bb35f3fd92b5ad1d0208d848cf0a4eaf297bb