[INFO] fetching crate bench 1.0.0...
[INFO] checking bench-1.0.0 against try#894d32a5432c6a6461bb2aac7c3d5f2e87dce83f for pr-77015
[INFO] extracting crate bench 1.0.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate bench 1.0.0 on toolchain 894d32a5432c6a6461bb2aac7c3d5f2e87dce83f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bench 1.0.0
[INFO] finished tweaking crates.io crate bench 1.0.0
[INFO] tweaked toml for crates.io crate bench 1.0.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded criterion-stats v0.1.3
[INFO] [stderr]   Downloaded loggerv v0.6.0
[INFO] [stderr]   Downloaded criterion-plot v0.1.3
[INFO] [stderr]   Downloaded cast v0.1.0
[INFO] [stderr]   Downloaded criterion v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 79a5fd6b8cabb73e4b7ba14d6f2f7a143e2c01603601583a5ce5327638bf5a64
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "79a5fd6b8cabb73e4b7ba14d6f2f7a143e2c01603601583a5ce5327638bf5a64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "79a5fd6b8cabb73e4b7ba14d6f2f7a143e2c01603601583a5ce5327638bf5a64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79a5fd6b8cabb73e4b7ba14d6f2f7a143e2c01603601583a5ce5327638bf5a64", kill_on_drop: false }`
[INFO] [stdout] 79a5fd6b8cabb73e4b7ba14d6f2f7a143e2c01603601583a5ce5327638bf5a64
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5b368e44fbfe3fe693898e352cbd649f6fcaec896d0d251e8c13cd7b87ec589a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5b368e44fbfe3fe693898e352cbd649f6fcaec896d0d251e8c13cd7b87ec589a", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking cast v0.1.0
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking thread-scoped v1.0.2
[INFO] [stderr]     Checking term v0.4.6
[INFO] [stderr]     Checking itertools v0.4.19
[INFO] [stderr]     Checking ansi_term v0.10.2
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking num_cpus v0.2.13
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]     Checking isatty v0.1.9
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking itertools v0.5.10
[INFO] [stderr]     Checking backtrace v0.3.51
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking simplelog v0.4.4
[INFO] [stderr]     Checking loggerv v0.6.0
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking criterion-plot v0.1.3
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking criterion-stats v0.1.3
[INFO] [stderr]     Checking criterion v0.1.2
[INFO] [stderr]     Checking bench v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.02s
[INFO] running `Command { std: "docker" "inspect" "5b368e44fbfe3fe693898e352cbd649f6fcaec896d0d251e8c13cd7b87ec589a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b368e44fbfe3fe693898e352cbd649f6fcaec896d0d251e8c13cd7b87ec589a", kill_on_drop: false }`
[INFO] [stdout] 5b368e44fbfe3fe693898e352cbd649f6fcaec896d0d251e8c13cd7b87ec589a