[INFO] crate mft 0.5.1 is already in cache
[INFO] checking mft-0.5.1 against master#3dbade652ed8ebac70f903e01f51cd92c4e4302c for pr-69880
[INFO] extracting crate mft 0.5.1 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate mft 0.5.1 on toolchain 3dbade652ed8ebac70f903e01f51cd92c4e4302c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+3dbade652ed8ebac70f903e01f51cd92c4e4302c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate mft 0.5.1
[INFO] finished tweaking crates.io crate mft 0.5.1
[INFO] tweaked toml for crates.io crate mft 0.5.1 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate mft 0.5.1 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+3dbade652ed8ebac70f903e01f51cd92c4e4302c" "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-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=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" "+3dbade652ed8ebac70f903e01f51cd92c4e4302c" "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] 783864c5c809c65946b4c5ae39551576c7a160c83417d5080c3cbab2978df044
[INFO] running `"docker" "start" "-a" "783864c5c809c65946b4c5ae39551576c7a160c83417d5080c3cbab2978df044"`
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling escargot v0.5.0
[INFO] [stderr]     Checking normalize-line-endings v0.2.2
[INFO] [stderr]    Compiling num-traits v0.2.10
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling hashbrown v0.6.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.7
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]     Checking nix v0.9.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]     Checking pulldown-cmark v0.2.0
[INFO] [stderr]     Checking aho-corasick v0.7.6
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking crossbeam-queue v0.2.1
[INFO] [stderr]     Checking rand_os v0.2.2
[INFO] [stderr]     Checking rand_xoshiro v0.3.1
[INFO] [stderr]     Checking term v0.6.1
[INFO] [stderr]     Checking tempfile v2.2.0
[INFO] [stderr]     Checking error-chain v0.12.1
[INFO] [stderr]     Checking error-chain v0.11.0
[INFO] [stderr]    Compiling backtrace v0.3.40
[INFO] [stderr]     Checking regex v0.2.11
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling syn v1.0.13
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking float-cmp v0.5.3
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking console v0.9.1
[INFO] [stderr]     Checking predicates v1.0.2
[INFO] [stderr]     Checking rexpect v0.3.0
[INFO] [stderr]     Checking dialoguer v0.5.0
[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 indoc v0.3.4
[INFO] [stderr]     Checking const-random v0.1.6
[INFO] [stderr]     Checking ahash v0.2.18
[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 bstr v0.2.8
[INFO] [stderr]     Checking chrono v0.4.10
[INFO] [stderr]     Checking semver v0.9.0
[INFO] [stderr]     Checking csv v1.1.1
[INFO] [stderr]     Checking simplelog v0.7.4
[INFO] [stderr]     Checking winstructs v0.3.0
[INFO] [stderr]     Checking tinytemplate v1.0.3
[INFO] [stderr]     Checking cargo_metadata v0.6.4
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling memoffset v0.5.3
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]     Checking skeptic v0.13.4
[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 v0.5.1 (/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 48s
[INFO] running `"docker" "inspect" "783864c5c809c65946b4c5ae39551576c7a160c83417d5080c3cbab2978df044"`
[INFO] running `"docker" "rm" "-f" "783864c5c809c65946b4c5ae39551576c7a160c83417d5080c3cbab2978df044"`
[INFO] [stdout] 783864c5c809c65946b4c5ae39551576c7a160c83417d5080c3cbab2978df044