[INFO] fetching crate tack 0.1.1-alpha...
[INFO] building tack-0.1.1-alpha against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate tack 0.1.1-alpha into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate tack 0.1.1-alpha
[INFO] finished tweaking crates.io crate tack 0.1.1-alpha
[INFO] tweaked toml for crates.io crate tack 0.1.1-alpha written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate tack 0.1.1-alpha 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-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] eb090a12459fb59b4bc70b4f2e2967f456258c0f2b11a375c4475b6d816e4839
[INFO] running `Command { std: "docker" "start" "-a" "eb090a12459fb59b4bc70b4f2e2967f456258c0f2b11a375c4475b6d816e4839", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eb090a12459fb59b4bc70b4f2e2967f456258c0f2b11a375c4475b6d816e4839", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb090a12459fb59b4bc70b4f2e2967f456258c0f2b11a375c4475b6d816e4839", kill_on_drop: false }`
[INFO] [stdout] eb090a12459fb59b4bc70b4f2e2967f456258c0f2b11a375c4475b6d816e4839
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] f3ca8a268fea274d39a1a6d8bc7bbb33f31d80644348b22dd86801783becc150
[INFO] running `Command { std: "docker" "start" "-a" "f3ca8a268fea274d39a1a6d8bc7bbb33f31d80644348b22dd86801783becc150", kill_on_drop: false }`
[INFO] [stderr]    Compiling tack v0.1.1-alpha (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `valid_braces` is never used
[INFO] [stdout]   --> src/lib.rs:79:4
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn valid_braces<'a>(s: &'a str) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `Command { std: "docker" "inspect" "f3ca8a268fea274d39a1a6d8bc7bbb33f31d80644348b22dd86801783becc150", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3ca8a268fea274d39a1a6d8bc7bbb33f31d80644348b22dd86801783becc150", kill_on_drop: false }`
[INFO] [stdout] f3ca8a268fea274d39a1a6d8bc7bbb33f31d80644348b22dd86801783becc150
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 286d4d04804fa3ff57bca01c6b4dec38c7ce0824384345fa72341247fb6f0667
[INFO] running `Command { std: "docker" "start" "-a" "286d4d04804fa3ff57bca01c6b4dec38c7ce0824384345fa72341247fb6f0667", kill_on_drop: false }`
[INFO] [stderr]    Compiling tack v0.1.1-alpha (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `valid_braces` is never used
[INFO] [stdout]   --> src/lib.rs:79:4
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn valid_braces<'a>(s: &'a str) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `Command { std: "docker" "inspect" "286d4d04804fa3ff57bca01c6b4dec38c7ce0824384345fa72341247fb6f0667", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "286d4d04804fa3ff57bca01c6b4dec38c7ce0824384345fa72341247fb6f0667", kill_on_drop: false }`
[INFO] [stdout] 286d4d04804fa3ff57bca01c6b4dec38c7ce0824384345fa72341247fb6f0667