[INFO] fetching crate prec 1.1.0...
[INFO] building prec-1.1.0 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate prec 1.1.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate prec 1.1.0
[INFO] finished tweaking crates.io crate prec 1.1.0
[INFO] tweaked toml for crates.io crate prec 1.1.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate prec 1.1.0 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 prec 1.1.0 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-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 8ce7db65e1d68de16f206a379ac91e18bc68bead6ebe3aa81ac0e292009fbd86
[INFO] running `Command { std: "docker" "start" "-a" "8ce7db65e1d68de16f206a379ac91e18bc68bead6ebe3aa81ac0e292009fbd86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8ce7db65e1d68de16f206a379ac91e18bc68bead6ebe3aa81ac0e292009fbd86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ce7db65e1d68de16f206a379ac91e18bc68bead6ebe3aa81ac0e292009fbd86", kill_on_drop: false }`
[INFO] [stdout] 8ce7db65e1d68de16f206a379ac91e18bc68bead6ebe3aa81ac0e292009fbd86
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 52965761c2c078aa97c43706b5f6e68ebf5033b16b81556fdf1b27fd2e69e1b5
[INFO] running `Command { std: "docker" "start" "-a" "52965761c2c078aa97c43706b5f6e68ebf5033b16b81556fdf1b27fd2e69e1b5", kill_on_drop: false }`
[INFO] [stderr]    Compiling prec v1.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "52965761c2c078aa97c43706b5f6e68ebf5033b16b81556fdf1b27fd2e69e1b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52965761c2c078aa97c43706b5f6e68ebf5033b16b81556fdf1b27fd2e69e1b5", kill_on_drop: false }`
[INFO] [stdout] 52965761c2c078aa97c43706b5f6e68ebf5033b16b81556fdf1b27fd2e69e1b5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 2d0cbb7d76b96f490440c427d98a2ba8e902309f168262ed071ad42e9312b1aa
[INFO] running `Command { std: "docker" "start" "-a" "2d0cbb7d76b96f490440c427d98a2ba8e902309f168262ed071ad42e9312b1aa", kill_on_drop: false }`
[INFO] [stderr]    Compiling prec v1.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `Paren` is never constructed
[INFO] [stdout]    --> src/lib.rs:336:3
[INFO] [stdout]     |
[INFO] [stdout] 335 |     pub enum MathToken {
[INFO] [stdout]     |              --------- variant in this enum
[INFO] [stdout] 336 |         Paren(Box<Expression<MathOperator, MathToken>>),
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `MathToken` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[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 0.88s
[INFO] running `Command { std: "docker" "inspect" "2d0cbb7d76b96f490440c427d98a2ba8e902309f168262ed071ad42e9312b1aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d0cbb7d76b96f490440c427d98a2ba8e902309f168262ed071ad42e9312b1aa", kill_on_drop: false }`
[INFO] [stdout] 2d0cbb7d76b96f490440c427d98a2ba8e902309f168262ed071ad42e9312b1aa
