[INFO] fetching crate unrar 0.4.4...
[INFO] checking unrar-0.4.4 against try#55b3f428b4fac6790b1e8492e0b91ff2d80aec7c for pr-77035
[INFO] extracting crate unrar 0.4.4 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate unrar 0.4.4 on toolchain 55b3f428b4fac6790b1e8492e0b91ff2d80aec7c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate unrar 0.4.4
[INFO] finished tweaking crates.io crate unrar 0.4.4
[INFO] tweaked toml for crates.io crate unrar 0.4.4 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate unrar 0.4.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded enum_primitive v0.1.1
[INFO] [stderr]   Downloaded num-iter v0.1.33
[INFO] [stderr]   Downloaded unrar_sys v0.2.1
[INFO] [stderr]   Downloaded num-traits v0.1.39
[INFO] [stderr]   Downloaded num v0.1.39
[INFO] [stderr]   Downloaded rand v0.3.15
[INFO] [stderr]   Downloaded num-rational v0.1.38
[INFO] [stderr]   Downloaded num-integer v0.1.34
[INFO] [stderr]   Downloaded tempdir v0.3.5
[INFO] [stderr]   Downloaded num-complex v0.1.38
[INFO] [stderr]   Downloaded num-bigint v0.1.39
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3a38719206202cefbf38c9c5d63a3cb5a965fe2e753c123407addd7be492da04
[INFO] running `Command { std: "docker" "start" "-a" "3a38719206202cefbf38c9c5d63a3cb5a965fe2e753c123407addd7be492da04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3a38719206202cefbf38c9c5d63a3cb5a965fe2e753c123407addd7be492da04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a38719206202cefbf38c9c5d63a3cb5a965fe2e753c123407addd7be492da04", kill_on_drop: false }`
[INFO] [stdout] 3a38719206202cefbf38c9c5d63a3cb5a965fe2e753c123407addd7be492da04
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7d59b38fd296d2703168704ddfc01f913ae5f0214bace16129aadd9ee5b8f8d4
[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" "7d59b38fd296d2703168704ddfc01f913ae5f0214bace16129aadd9ee5b8f8d4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]     Checking num-traits v0.1.39
[INFO] [stderr]    Compiling cc v1.0.48
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking num-integer v0.1.34
[INFO] [stderr]     Checking num-complex v0.1.38
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking num-iter v0.1.33
[INFO] [stderr]    Compiling unrar_sys v0.2.1
[INFO] [stderr]     Checking rand v0.3.15
[INFO] [stderr]     Checking num-bigint v0.1.39
[INFO] [stderr]     Checking tempdir v0.3.5
[INFO] [stderr]     Checking num-rational v0.1.38
[INFO] [stderr]     Checking num v0.1.39
[INFO] [stderr]     Checking unrar v0.4.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::io::prelude`
[INFO] [stdout]  --> tests/multipart.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::io::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.46s
[INFO] running `Command { std: "docker" "inspect" "7d59b38fd296d2703168704ddfc01f913ae5f0214bace16129aadd9ee5b8f8d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d59b38fd296d2703168704ddfc01f913ae5f0214bace16129aadd9ee5b8f8d4", kill_on_drop: false }`
[INFO] [stdout] 7d59b38fd296d2703168704ddfc01f913ae5f0214bace16129aadd9ee5b8f8d4