[INFO] updating cached repository https://github.com/GuillaumeGomez/rustdoc-stripper
[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/GuillaumeGomez/rustdoc-stripper
[INFO] [stderr]    1c7c652..a5981fd  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a5981fda924265e43d2a7c9e42492805d5d47e26
[INFO] checking GuillaumeGomez/rustdoc-stripper against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGuillaumeGomez%2Frustdoc-stripper" "/workspace/builds/worker-0/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/GuillaumeGomez/rustdoc-stripper on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/GuillaumeGomez/rustdoc-stripper
[INFO] finished tweaking git repo https://github.com/GuillaumeGomez/rustdoc-stripper
[INFO] tweaked toml for git repo https://github.com/GuillaumeGomez/rustdoc-stripper written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/GuillaumeGomez/rustdoc-stripper already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+45d050cde277b22a755847338f2acc2c7b834141" "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] d2ea7e91eb08b5b40cf1df496f6c28212c821917b6e921dc31bb2bf926e0c37f
[INFO] running `"docker" "start" "-a" "d2ea7e91eb08b5b40cf1df496f6c28212c821917b6e921dc31bb2bf926e0c37f"`
[INFO] [stderr]     Checking rand_core v0.4.0
[INFO] [stderr]    Compiling autocfg v0.1.4
[INFO] [stderr]    Compiling libc v0.2.58
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]     Checking rustdoc-stripper v0.1.12 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking tempfile v3.0.8
[INFO] [stderr] warning: unused variable: `file`
[INFO] [stderr]     --> tests/tests.rs:1251:19
[INFO] [stderr]      |
[INFO] [stderr] 1251 | fn get_basic12_md(file: &str) -> String {
[INFO] [stderr]      |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_file`
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.12s
[INFO] running `"docker" "inspect" "d2ea7e91eb08b5b40cf1df496f6c28212c821917b6e921dc31bb2bf926e0c37f"`
[INFO] running `"docker" "rm" "-f" "d2ea7e91eb08b5b40cf1df496f6c28212c821917b6e921dc31bb2bf926e0c37f"`
[INFO] [stdout] d2ea7e91eb08b5b40cf1df496f6c28212c821917b6e921dc31bb2bf926e0c37f