[INFO] fetching crate processortrace 0.0.3...
[INFO] checking processortrace-0.0.3 against master#914adf04af1c1a984707f778da3d04590c03d144 for pr-72331
[INFO] extracting crate processortrace 0.0.3 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate processortrace 0.0.3 on toolchain 914adf04af1c1a984707f778da3d04590c03d144
[INFO] running `"/workspace/cargo-home/bin/cargo" "+914adf04af1c1a984707f778da3d04590c03d144" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate processortrace 0.0.3
[INFO] finished tweaking crates.io crate processortrace 0.0.3
[INFO] tweaked toml for crates.io crate processortrace 0.0.3 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+914adf04af1c1a984707f778da3d04590c03d144" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+914adf04af1c1a984707f778da3d04590c03d144" "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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+914adf04af1c1a984707f778da3d04590c03d144" "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] 376ed12689611ae711872734ecbfb4253d857b5a507a810e8471c72121ca09b7
[INFO] running `"docker" "start" "-a" "376ed12689611ae711872734ecbfb4253d857b5a507a810e8471c72121ca09b7"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling cc v1.0.54
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]    Compiling x86 v0.32.0
[INFO] [stderr]     Checking bit_field v0.10.0
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking byteorder v0.5.3
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking rlibc v1.0.0
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking nix v0.17.0
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking mmap v0.1.1
[INFO] [stderr]    Compiling raw-cpuid v7.0.3
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stderr]     Checking driverkit v0.3.0
[INFO] [stderr]     Checking processortrace v0.0.3 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/tests.rs:50:13
[INFO] [stderr]    |
[INFO] [stderr] 50 |         let mut a = 0;
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.83s
[INFO] running `"docker" "inspect" "376ed12689611ae711872734ecbfb4253d857b5a507a810e8471c72121ca09b7"`
[INFO] running `"docker" "rm" "-f" "376ed12689611ae711872734ecbfb4253d857b5a507a810e8471c72121ca09b7"`
[INFO] [stdout] 376ed12689611ae711872734ecbfb4253d857b5a507a810e8471c72121ca09b7