[INFO] fetching crate libpool 0.1.0...
[INFO] testing libpool-0.1.0 against master#562dee4820c458d823175268e41601d4c060588a for pr-154210-1
[INFO] extracting crate libpool 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate libpool 0.1.0
[INFO] finished tweaking crates.io crate libpool 0.1.0
[INFO] tweaked toml for crates.io crate libpool 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate libpool 0.1.0 on toolchain 562dee4820c458d823175268e41601d4c060588a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "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" "+562dee4820c458d823175268e41601d4c060588a" "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" "+562dee4820c458d823175268e41601d4c060588a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 47337816a1b73e12763267410cf33e366816b4e15af6dc5540da094af2001a7e
[INFO] running `Command { std: "docker" "start" "-a" "47337816a1b73e12763267410cf33e366816b4e15af6dc5540da094af2001a7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "47337816a1b73e12763267410cf33e366816b4e15af6dc5540da094af2001a7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47337816a1b73e12763267410cf33e366816b4e15af6dc5540da094af2001a7e", kill_on_drop: false }`
[INFO] [stdout] 47337816a1b73e12763267410cf33e366816b4e15af6dc5540da094af2001a7e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 04c645d4a5058573731ff75b7b2ad49008b7a09c65b4f22549aff3ecc597c0dc
[INFO] running `Command { std: "docker" "start" "-a" "04c645d4a5058573731ff75b7b2ad49008b7a09c65b4f22549aff3ecc597c0dc", kill_on_drop: false }`
[INFO] [stderr]    Compiling libpool v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `id` is never read
[INFO] [stdout]   --> src/lib.rs:73:5
[INFO] [stdout]    |
[INFO] [stdout] 72 | struct Worker {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 73 |     id: 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 0.39s
[INFO] running `Command { std: "docker" "inspect" "04c645d4a5058573731ff75b7b2ad49008b7a09c65b4f22549aff3ecc597c0dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04c645d4a5058573731ff75b7b2ad49008b7a09c65b4f22549aff3ecc597c0dc", kill_on_drop: false }`
[INFO] [stdout] 04c645d4a5058573731ff75b7b2ad49008b7a09c65b4f22549aff3ecc597c0dc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 53f1251fd8288a45312e90e6a6beec09729b45da0adcb579ad320310de3f757f
[INFO] running `Command { std: "docker" "start" "-a" "53f1251fd8288a45312e90e6a6beec09729b45da0adcb579ad320310de3f757f", kill_on_drop: false }`
[INFO] [stdout] warning: field `id` is never read
[INFO] [stdout]   --> src/lib.rs:73:5
[INFO] [stdout]    |
[INFO] [stdout] 72 | struct Worker {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 73 |     id: usize,
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling libpool v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `id` is never read
[INFO] [stdout]   --> src/lib.rs:73:5
[INFO] [stdout]    |
[INFO] [stdout] 72 | struct Worker {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 73 |     id: 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 0.37s
[INFO] running `Command { std: "docker" "inspect" "53f1251fd8288a45312e90e6a6beec09729b45da0adcb579ad320310de3f757f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53f1251fd8288a45312e90e6a6beec09729b45da0adcb579ad320310de3f757f", kill_on_drop: false }`
[INFO] [stdout] 53f1251fd8288a45312e90e6a6beec09729b45da0adcb579ad320310de3f757f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 83d044e0d3e48318e34d41b3f478361f8c651b940b1cd2e311185f9599741953
[INFO] running `Command { std: "docker" "start" "-a" "83d044e0d3e48318e34d41b3f478361f8c651b940b1cd2e311185f9599741953", kill_on_drop: false }`
[INFO] [stderr] warning: field `id` is never read
[INFO] [stderr]   --> src/lib.rs:73:5
[INFO] [stderr]    |
[INFO] [stderr] 72 | struct Worker {
[INFO] [stderr]    |        ------ field in this struct
[INFO] [stderr] 73 |     id: usize,
[INFO] [stderr]    |     ^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `libpool` (lib) generated 1 warning
[INFO] [stderr] warning: `libpool` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/libpool-5476e86d15ce8187)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests libpool
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "83d044e0d3e48318e34d41b3f478361f8c651b940b1cd2e311185f9599741953", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83d044e0d3e48318e34d41b3f478361f8c651b940b1cd2e311185f9599741953", kill_on_drop: false }`
[INFO] [stdout] 83d044e0d3e48318e34d41b3f478361f8c651b940b1cd2e311185f9599741953