[INFO] fetching crate xiaotian_s_minigrep 0.1.4...
[INFO] building xiaotian_s_minigrep-0.1.4 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate xiaotian_s_minigrep 0.1.4 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate xiaotian_s_minigrep 0.1.4
[INFO] finished tweaking crates.io crate xiaotian_s_minigrep 0.1.4
[INFO] tweaked toml for crates.io crate xiaotian_s_minigrep 0.1.4 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate xiaotian_s_minigrep 0.1.4 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] crate crates.io crate xiaotian_s_minigrep 0.1.4 already has a lockfile, it will not be regenerated
[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-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 7fdbed278f6b9ef307836701ea2c3d4b56f1cdbd289019d98d964ed0066b3068
[INFO] running `Command { std: "docker" "start" "-a" "7fdbed278f6b9ef307836701ea2c3d4b56f1cdbd289019d98d964ed0066b3068", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7fdbed278f6b9ef307836701ea2c3d4b56f1cdbd289019d98d964ed0066b3068", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fdbed278f6b9ef307836701ea2c3d4b56f1cdbd289019d98d964ed0066b3068", kill_on_drop: false }`
[INFO] [stdout] 7fdbed278f6b9ef307836701ea2c3d4b56f1cdbd289019d98d964ed0066b3068
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 277c9fb2f4e4dfc72732c27728ec0f26142db5b8bf6dec201a0d0ca3e2651a52
[INFO] running `Command { std: "docker" "start" "-a" "277c9fb2f4e4dfc72732c27728ec0f26142db5b8bf6dec201a0d0ca3e2651a52", kill_on_drop: false }`
[INFO] [stderr]    Compiling xiaotian_s_minigrep v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::time::Instant`
[INFO] [stdout]    --> src/lib.rs:104:9
[INFO] [stdout]     |
[INFO] [stdout] 104 |     use std::time::Instant;
[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 0.57s
[INFO] running `Command { std: "docker" "inspect" "277c9fb2f4e4dfc72732c27728ec0f26142db5b8bf6dec201a0d0ca3e2651a52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "277c9fb2f4e4dfc72732c27728ec0f26142db5b8bf6dec201a0d0ca3e2651a52", kill_on_drop: false }`
[INFO] [stdout] 277c9fb2f4e4dfc72732c27728ec0f26142db5b8bf6dec201a0d0ca3e2651a52
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 3f86dc9136e27f29edd505da2104f579ddeef46d6c1f27e6a1ec0513b7ab1e2b
[INFO] running `Command { std: "docker" "start" "-a" "3f86dc9136e27f29edd505da2104f579ddeef46d6c1f27e6a1ec0513b7ab1e2b", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `std::time::Instant`
[INFO] [stdout]    --> src/lib.rs:104:9
[INFO] [stdout]     |
[INFO] [stdout] 104 |     use std::time::Instant;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling xiaotian_s_minigrep v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `Command { std: "docker" "inspect" "3f86dc9136e27f29edd505da2104f579ddeef46d6c1f27e6a1ec0513b7ab1e2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f86dc9136e27f29edd505da2104f579ddeef46d6c1f27e6a1ec0513b7ab1e2b", kill_on_drop: false }`
[INFO] [stdout] 3f86dc9136e27f29edd505da2104f579ddeef46d6c1f27e6a1ec0513b7ab1e2b