[INFO] fetching crate whatlang 0.7.2...
[INFO] checking whatlang-0.7.2 against beta-2019-10-27 for pr-65897
[INFO] extracting crate whatlang 0.7.2 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate whatlang 0.7.2 on toolchain beta-2019-10-27
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate whatlang 0.7.2
[INFO] finished tweaking crates.io crate whatlang 0.7.2
[INFO] tweaked toml for crates.io crate whatlang 0.7.2 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate whatlang 0.7.2 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=allow" "-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" "+beta-2019-10-27" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c55bf1f36a777982f1585c0bd60743ba4aeba666c95e31e19d57d2738d6f8184
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "c55bf1f36a777982f1585c0bd60743ba4aeba666c95e31e19d57d2738d6f8184"`
[INFO] [stderr]    Compiling getrandom v0.1.12
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling ppv-lite86 v0.2.5
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]    Compiling serde v1.0.89
[INFO] [stderr]     Checking bit-vec v0.5.0
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling hashbrown v0.6.1
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]     Checking rand_pcg v0.1.2
[INFO] [stderr]     Checking rand_os v0.1.2
[INFO] [stderr]     Checking rand_chacha v0.1.1
[INFO] [stderr]     Checking wait-timeout v0.1.5
[INFO] [stderr]     Checking bit-set v0.5.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling c2-chacha v0.2.2
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]     Checking tempfile v3.0.7
[INFO] [stderr]    Compiling rand v0.7.2
[INFO] [stderr]     Checking rusty-fork v0.2.1
[INFO] [stderr]     Checking proptest v0.9.1
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling const-random-macro v0.1.6
[INFO] [stderr]     Checking const-random v0.1.6
[INFO] [stderr]     Checking ahash v0.2.16
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking whatlang v0.7.2 (/opt/rustwide/workdir)
[INFO] [stderr] error: couldn't read benches/example.rs: No such file or directory (os error 2)
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `whatlang`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "c55bf1f36a777982f1585c0bd60743ba4aeba666c95e31e19d57d2738d6f8184"`
[INFO] running `"docker" "rm" "-f" "c55bf1f36a777982f1585c0bd60743ba4aeba666c95e31e19d57d2738d6f8184"`
[INFO] [stdout] c55bf1f36a777982f1585c0bd60743ba4aeba666c95e31e19d57d2738d6f8184