[INFO] fetching crate mft 0.5.0...
[INFO] checking mft-0.5.0 against master#6250d56355d72264ece721e8d0dc95b16a6824b1 for pr-68350
[INFO] extracting crate mft 0.5.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate mft 0.5.0 on toolchain 6250d56355d72264ece721e8d0dc95b16a6824b1
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6250d56355d72264ece721e8d0dc95b16a6824b1" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate mft 0.5.0
[INFO] finished tweaking crates.io crate mft 0.5.0
[INFO] tweaked toml for crates.io crate mft 0.5.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate mft 0.5.0 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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 9b74d1502d7e25a829b86c25f4ff657e43636897ce2271a5f48da135bb8b3f65
[INFO] running `"docker" "start" "-a" "9b74d1502d7e25a829b86c25f4ff657e43636897ce2271a5f48da135bb8b3f65"`
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]    Compiling syn v1.0.13
[INFO] [stderr]     Checking error-chain v0.12.1
[INFO] [stderr]     Checking console v0.9.1
[INFO] [stderr]     Checking predicates v1.0.2
[INFO] [stderr]    Compiling backtrace v0.3.40
[INFO] [stderr]     Checking regex v0.2.11
[INFO] [stderr]     Checking dialoguer v0.5.0
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking rexpect v0.3.0
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling thiserror-impl v1.0.9
[INFO] [stderr]    Compiling num-derive v0.3.0
[INFO] [stderr]    Compiling const-random-macro v0.1.6
[INFO] [stderr]    Compiling indoc-impl v0.3.4
[INFO] [stderr]     Checking thiserror v1.0.9
[INFO] [stderr]     Checking const-random v0.1.6
[INFO] [stderr]     Checking ahash v0.2.18
[INFO] [stderr]     Checking indoc v0.3.4
[INFO] [stderr]     Checking hashbrown v0.6.3
[INFO] [stderr]     Checking lru v0.4.3
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]     Checking serde_json v1.0.44
[INFO] [stderr]     Checking chrono v0.4.10
[INFO] [stderr]     Checking bstr v0.2.8
[INFO] [stderr]     Checking semver v0.9.0
[INFO] [stderr]     Checking csv v1.1.1
[INFO] [stderr]     Checking cargo_metadata v0.6.4
[INFO] [stderr]     Checking escargot v0.5.0
[INFO] [stderr]     Checking tinytemplate v1.0.3
[INFO] [stderr]     Checking simplelog v0.7.4
[INFO] [stderr]     Checking winstructs v0.3.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking skeptic v0.13.4
[INFO] [stderr]    Compiling memoffset v0.5.3
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]     Checking assert_cmd v0.12.0
[INFO] [stderr]     Checking crossbeam-epoch v0.8.0
[INFO] [stderr]     Checking criterion-plot v0.4.0
[INFO] [stderr]     Checking crossbeam-deque v0.7.2
[INFO] [stderr]     Checking rayon-core v1.7.0
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]    Compiling mft v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking criterion v0.3.0
[INFO] [stderr] warning: variable `count` is assigned to, but never used
[INFO] [stderr]   --> src/benches/benchmark.rs:11:13
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let mut count = 0;
[INFO] [stderr]    |             ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr]    = note: consider using `_count` instead
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 54s
[INFO] running `"docker" "inspect" "9b74d1502d7e25a829b86c25f4ff657e43636897ce2271a5f48da135bb8b3f65"`
[INFO] running `"docker" "rm" "-f" "9b74d1502d7e25a829b86c25f4ff657e43636897ce2271a5f48da135bb8b3f65"`
[INFO] [stdout] 9b74d1502d7e25a829b86c25f4ff657e43636897ce2271a5f48da135bb8b3f65