[INFO] fetching crate pperf 0.1.2...
[INFO] building pperf-0.1.2 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate pperf 0.1.2 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate pperf 0.1.2
[INFO] finished tweaking crates.io crate pperf 0.1.2
[INFO] tweaked toml for crates.io crate pperf 0.1.2 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate pperf 0.1.2 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 34347e8150b1ac73decbc1c16528776f7e8f11425a769c07330ee40993da318c
[INFO] running `Command { std: "docker" "start" "-a" "34347e8150b1ac73decbc1c16528776f7e8f11425a769c07330ee40993da318c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "34347e8150b1ac73decbc1c16528776f7e8f11425a769c07330ee40993da318c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34347e8150b1ac73decbc1c16528776f7e8f11425a769c07330ee40993da318c", kill_on_drop: false }`
[INFO] [stdout] 34347e8150b1ac73decbc1c16528776f7e8f11425a769c07330ee40993da318c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d2f54a353bb8ed9aa9a58fb1fa0836ee356bad0dabb464de87bf1b368b18a645
[INFO] running `Command { std: "docker" "start" "-a" "d2f54a353bb8ed9aa9a58fb1fa0836ee356bad0dabb464de87bf1b368b18a645", kill_on_drop: false }`
[INFO] [stderr]    Compiling pperf v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `write`
[INFO] [stdout]  --> src/error.rs:2:17
[INFO] [stdout]   |
[INFO] [stdout] 2 |     fmt::{self, write},
[INFO] [stdout]   |                 ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "d2f54a353bb8ed9aa9a58fb1fa0836ee356bad0dabb464de87bf1b368b18a645", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2f54a353bb8ed9aa9a58fb1fa0836ee356bad0dabb464de87bf1b368b18a645", kill_on_drop: false }`
[INFO] [stdout] d2f54a353bb8ed9aa9a58fb1fa0836ee356bad0dabb464de87bf1b368b18a645
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 78698ae3682369c0b9acede845ecb837ea1ce2dae98cbb7a6992cd787de17b7a
[INFO] running `Command { std: "docker" "start" "-a" "78698ae3682369c0b9acede845ecb837ea1ce2dae98cbb7a6992cd787de17b7a", kill_on_drop: false }`
[INFO] [stderr]    Compiling pperf v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `write`
[INFO] [stdout]  --> src/error.rs:2:17
[INFO] [stdout]   |
[INFO] [stdout] 2 |     fmt::{self, write},
[INFO] [stdout]   |                 ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `write`
[INFO] [stdout]  --> src/error.rs:2:17
[INFO] [stdout]   |
[INFO] [stdout] 2 |     fmt::{self, write},
[INFO] [stdout]   |                 ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `Command { std: "docker" "inspect" "78698ae3682369c0b9acede845ecb837ea1ce2dae98cbb7a6992cd787de17b7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78698ae3682369c0b9acede845ecb837ea1ce2dae98cbb7a6992cd787de17b7a", kill_on_drop: false }`
[INFO] [stdout] 78698ae3682369c0b9acede845ecb837ea1ce2dae98cbb7a6992cd787de17b7a