[INFO] cloning repository https://github.com/kleidinc/impl_display_for_vec
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kleidinc/impl_display_for_vec" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkleidinc%2Fimpl_display_for_vec", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkleidinc%2Fimpl_display_for_vec'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2b8233360f1bd74e52932afdaadb9ba818e11d46
[INFO] testing kleidinc/impl_display_for_vec against try#33835004928d3bf65db4d4712e1330766263b0bd for pr-155739
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkleidinc%2Fimpl_display_for_vec" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/kleidinc/impl_display_for_vec
[INFO] finished tweaking git repo https://github.com/kleidinc/impl_display_for_vec
[INFO] tweaked toml for git repo https://github.com/kleidinc/impl_display_for_vec written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/kleidinc/impl_display_for_vec on toolchain 33835004928d3bf65db4d4712e1330766263b0bd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/kleidinc/impl_display_for_vec 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" "+33835004928d3bf65db4d4712e1330766263b0bd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "+33835004928d3bf65db4d4712e1330766263b0bd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8e1f2b784f7a1b7210782f770367af5899572e1b16cc114995f3fc9ebcf972ee
[INFO] running `Command { std: "docker" "start" "-a" "8e1f2b784f7a1b7210782f770367af5899572e1b16cc114995f3fc9ebcf972ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8e1f2b784f7a1b7210782f770367af5899572e1b16cc114995f3fc9ebcf972ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e1f2b784f7a1b7210782f770367af5899572e1b16cc114995f3fc9ebcf972ee", kill_on_drop: false }`
[INFO] [stdout] 8e1f2b784f7a1b7210782f770367af5899572e1b16cc114995f3fc9ebcf972ee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "+33835004928d3bf65db4d4712e1330766263b0bd" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 754679c385a99c75ee294f444f2a0186172e589977b0134388039f1fd801de26
[INFO] running `Command { std: "docker" "start" "-a" "754679c385a99c75ee294f444f2a0186172e589977b0134388039f1fd801de26", kill_on_drop: false }`
[INFO] [stderr]    Compiling impl_display_for v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `PrintableVec` is never constructed
[INFO] [stdout]   --> src/main.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 |     struct PrintableVec(Vec<String>);
[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 0.28s
[INFO] running `Command { std: "docker" "inspect" "754679c385a99c75ee294f444f2a0186172e589977b0134388039f1fd801de26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "754679c385a99c75ee294f444f2a0186172e589977b0134388039f1fd801de26", kill_on_drop: false }`
[INFO] [stdout] 754679c385a99c75ee294f444f2a0186172e589977b0134388039f1fd801de26
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "+33835004928d3bf65db4d4712e1330766263b0bd" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1899402af8b411526c51372280a97d3bd4a4dd515eb314e43441502aef68e223
[INFO] running `Command { std: "docker" "start" "-a" "1899402af8b411526c51372280a97d3bd4a4dd515eb314e43441502aef68e223", kill_on_drop: false }`
[INFO] [stderr]    Compiling impl_display_for v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "1899402af8b411526c51372280a97d3bd4a4dd515eb314e43441502aef68e223", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1899402af8b411526c51372280a97d3bd4a4dd515eb314e43441502aef68e223", kill_on_drop: false }`
[INFO] [stdout] 1899402af8b411526c51372280a97d3bd4a4dd515eb314e43441502aef68e223
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "+33835004928d3bf65db4d4712e1330766263b0bd" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8f317ecb819a78a4a9f04f28b3e466268fc275ca4800e91e5bdf91cb7eabbcc3
[INFO] running `Command { std: "docker" "start" "-a" "8f317ecb819a78a4a9f04f28b3e466268fc275ca4800e91e5bdf91cb7eabbcc3", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/impl_display_for-4fdd074c0ff92f46)
[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" "8f317ecb819a78a4a9f04f28b3e466268fc275ca4800e91e5bdf91cb7eabbcc3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f317ecb819a78a4a9f04f28b3e466268fc275ca4800e91e5bdf91cb7eabbcc3", kill_on_drop: false }`
[INFO] [stdout] 8f317ecb819a78a4a9f04f28b3e466268fc275ca4800e91e5bdf91cb7eabbcc3
