[INFO] fetching crate trallocator 0.2.1...
[INFO] checking trallocator-0.2.1 against try#bf5ff6675cf10ce009ac02007b064a7cfc4509ac for pr-140558
[INFO] extracting crate trallocator 0.2.1 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate trallocator 0.2.1 on toolchain bf5ff6675cf10ce009ac02007b064a7cfc4509ac
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bf5ff6675cf10ce009ac02007b064a7cfc4509ac" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate trallocator 0.2.1
[INFO] finished tweaking crates.io crate trallocator 0.2.1
[INFO] tweaked toml for crates.io crate trallocator 0.2.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bf5ff6675cf10ce009ac02007b064a7cfc4509ac" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bf5ff6675cf10ce009ac02007b064a7cfc4509ac" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+bf5ff6675cf10ce009ac02007b064a7cfc4509ac" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c2affc38b37000fcf2cd8d73b584a15ed4f990aa5cba05282a77cfae034a5c5c
[INFO] running `Command { std: "docker" "start" "-a" "c2affc38b37000fcf2cd8d73b584a15ed4f990aa5cba05282a77cfae034a5c5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c2affc38b37000fcf2cd8d73b584a15ed4f990aa5cba05282a77cfae034a5c5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2affc38b37000fcf2cd8d73b584a15ed4f990aa5cba05282a77cfae034a5c5c", kill_on_drop: false }`
[INFO] [stdout] c2affc38b37000fcf2cd8d73b584a15ed4f990aa5cba05282a77cfae034a5c5c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+bf5ff6675cf10ce009ac02007b064a7cfc4509ac" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c8f5bf6f1e699d67e85642a3cf939e3e7546a0e49f2eb583607c11962b982e7e
[INFO] running `Command { std: "docker" "start" "-a" "c8f5bf6f1e699d67e85642a3cf939e3e7546a0e49f2eb583607c11962b982e7e", kill_on_drop: false }`
[INFO] [stderr]     Checking trallocator v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `alloc::vec::Vec`
[INFO] [stdout]    --> src/lib.rs:111:9
[INFO] [stdout]     |
[INFO] [stdout] 111 |     use alloc::vec::Vec;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::alloc::System`
[INFO] [stdout]    --> src/lib.rs:112:9
[INFO] [stdout]     |
[INFO] [stdout] 112 |     use std::alloc::System;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::Trallocator`
[INFO] [stdout]    --> src/lib.rs:114:9
[INFO] [stdout]     |
[INFO] [stdout] 114 |     use crate::Trallocator;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "c8f5bf6f1e699d67e85642a3cf939e3e7546a0e49f2eb583607c11962b982e7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8f5bf6f1e699d67e85642a3cf939e3e7546a0e49f2eb583607c11962b982e7e", kill_on_drop: false }`
[INFO] [stdout] c8f5bf6f1e699d67e85642a3cf939e3e7546a0e49f2eb583607c11962b982e7e