[INFO] fetching crate tbg 0.1.3...
[INFO] building tbg-0.1.3 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate tbg 0.1.3 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate tbg 0.1.3
[INFO] finished tweaking crates.io crate tbg 0.1.3
[INFO] tweaked toml for crates.io crate tbg 0.1.3 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate tbg 0.1.3 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] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 17 packages to latest compatible versions
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[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] 3f53d54c9c3483247311e8b5901322fcadf24cc86e1646dba2d26b4310ae84b8
[INFO] running `Command { std: "docker" "start" "-a" "3f53d54c9c3483247311e8b5901322fcadf24cc86e1646dba2d26b4310ae84b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3f53d54c9c3483247311e8b5901322fcadf24cc86e1646dba2d26b4310ae84b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f53d54c9c3483247311e8b5901322fcadf24cc86e1646dba2d26b4310ae84b8", kill_on_drop: false }`
[INFO] [stdout] 3f53d54c9c3483247311e8b5901322fcadf24cc86e1646dba2d26b4310ae84b8
[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] a29f778539a0afd037219e44c98e9f2a796f82e7fde242a02a0a1a3600df3e32
[INFO] running `Command { std: "docker" "start" "-a" "a29f778539a0afd037219e44c98e9f2a796f82e7fde242a02a0a1a3600df3e32", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling tbg v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `usize_unwrap` is never used
[INFO] [stdout]  --> src/usize_wrapper.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub trait USizeWrapper {
[INFO] [stdout]   |           ------------ method in this trait
[INFO] [stdout] 3 |     fn usize_unwrap(self) -> usize;
[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 4.17s
[INFO] running `Command { std: "docker" "inspect" "a29f778539a0afd037219e44c98e9f2a796f82e7fde242a02a0a1a3600df3e32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a29f778539a0afd037219e44c98e9f2a796f82e7fde242a02a0a1a3600df3e32", kill_on_drop: false }`
[INFO] [stdout] a29f778539a0afd037219e44c98e9f2a796f82e7fde242a02a0a1a3600df3e32
[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] 8630bac52772a03cf6dea9d4f642762a12116b1ef5d49bc1383a26c49b13f2f7
[INFO] running `Command { std: "docker" "start" "-a" "8630bac52772a03cf6dea9d4f642762a12116b1ef5d49bc1383a26c49b13f2f7", kill_on_drop: false }`
[INFO] [stderr]    Compiling tbg v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `usize_unwrap` is never used
[INFO] [stdout]  --> src/usize_wrapper.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub trait USizeWrapper {
[INFO] [stdout]   |           ------------ method in this trait
[INFO] [stdout] 3 |     fn usize_unwrap(self) -> usize;
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `usize_unwrap` is never used
[INFO] [stdout]  --> src/usize_wrapper.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub trait USizeWrapper {
[INFO] [stdout]   |           ------------ method in this trait
[INFO] [stdout] 3 |     fn usize_unwrap(self) -> usize;
[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 1.15s
[INFO] running `Command { std: "docker" "inspect" "8630bac52772a03cf6dea9d4f642762a12116b1ef5d49bc1383a26c49b13f2f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8630bac52772a03cf6dea9d4f642762a12116b1ef5d49bc1383a26c49b13f2f7", kill_on_drop: false }`
[INFO] [stdout] 8630bac52772a03cf6dea9d4f642762a12116b1ef5d49bc1383a26c49b13f2f7