[INFO] fetching crate pretty_regex 1.0.5...
[INFO] checking pretty_regex-1.0.5 against master#8f21a5c92ea55c348c275a1bc4fedbdf181e0d64 for pr-143011
[INFO] extracting crate pretty_regex 1.0.5 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate pretty_regex 1.0.5
[INFO] finished tweaking crates.io crate pretty_regex 1.0.5
[INFO] tweaked toml for crates.io crate pretty_regex 1.0.5 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate pretty_regex 1.0.5 on toolchain 8f21a5c92ea55c348c275a1bc4fedbdf181e0d64
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8f21a5c92ea55c348c275a1bc4fedbdf181e0d64" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate pretty_regex 1.0.5 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" "+8f21a5c92ea55c348c275a1bc4fedbdf181e0d64" "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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8f21a5c92ea55c348c275a1bc4fedbdf181e0d64" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9bbf4acf03d6c5128c164ad6e80cc7879b3567aca879fe780cb2ec6e9f692d29
[INFO] running `Command { std: "docker" "start" "-a" "9bbf4acf03d6c5128c164ad6e80cc7879b3567aca879fe780cb2ec6e9f692d29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9bbf4acf03d6c5128c164ad6e80cc7879b3567aca879fe780cb2ec6e9f692d29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9bbf4acf03d6c5128c164ad6e80cc7879b3567aca879fe780cb2ec6e9f692d29", kill_on_drop: false }`
[INFO] [stdout] 9bbf4acf03d6c5128c164ad6e80cc7879b3567aca879fe780cb2ec6e9f692d29
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8f21a5c92ea55c348c275a1bc4fedbdf181e0d64" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] da1a4b03e69245f9c30635db5c445e116b75b9f780f3916cddb47e6c7431175a
[INFO] running `Command { std: "docker" "start" "-a" "da1a4b03e69245f9c30635db5c445e116b75b9f780f3916cddb47e6c7431175a", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking regex-syntax v0.7.4
[INFO] [stderr]     Checking aho-corasick v1.0.2
[INFO] [stderr]     Checking regex-automata v0.3.6
[INFO] [stderr]     Checking regex v1.9.3
[INFO] [stderr]     Checking pretty_regex v1.0.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to a provided trait method
[INFO] [stdout]   --> src/logic.rs:85:5
[INFO] [stdout]    |
[INFO] [stdout] 85 |     #[must_use]
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to a provided trait method
[INFO] [stdout]   --> src/logic.rs:85:5
[INFO] [stdout]    |
[INFO] [stdout] 85 |     #[must_use]
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.65s
[INFO] running `Command { std: "docker" "inspect" "da1a4b03e69245f9c30635db5c445e116b75b9f780f3916cddb47e6c7431175a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da1a4b03e69245f9c30635db5c445e116b75b9f780f3916cddb47e6c7431175a", kill_on_drop: false }`
[INFO] [stdout] da1a4b03e69245f9c30635db5c445e116b75b9f780f3916cddb47e6c7431175a