[INFO] fetching crate cow2 0.2.6...
[INFO] testing cow2-0.2.6 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-7
[INFO] extracting crate cow2 0.2.6 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate cow2 0.2.6
[INFO] finished tweaking crates.io crate cow2 0.2.6
[INFO] tweaked toml for crates.io crate cow2 0.2.6 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate cow2 0.2.6 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate cow2 0.2.6 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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2df496e8353bef53931e1ef5a5354c98c0f411ada727c0446aaf9a258d7f147b
[INFO] running `Command { std: "docker" "start" "-a" "2df496e8353bef53931e1ef5a5354c98c0f411ada727c0446aaf9a258d7f147b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2df496e8353bef53931e1ef5a5354c98c0f411ada727c0446aaf9a258d7f147b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2df496e8353bef53931e1ef5a5354c98c0f411ada727c0446aaf9a258d7f147b", kill_on_drop: false }`
[INFO] [stdout] 2df496e8353bef53931e1ef5a5354c98c0f411ada727c0446aaf9a258d7f147b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 94982ee71d9ff606e5c917b8eb08ff3789909602ce1b65e572ca02679805c4c8
[INFO] running `Command { std: "docker" "start" "-a" "94982ee71d9ff606e5c917b8eb08ff3789909602ce1b65e572ca02679805c4c8", kill_on_drop: false }`
[INFO] [stderr]    Compiling cow2 v0.2.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.28s
[INFO] running `Command { std: "docker" "inspect" "94982ee71d9ff606e5c917b8eb08ff3789909602ce1b65e572ca02679805c4c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94982ee71d9ff606e5c917b8eb08ff3789909602ce1b65e572ca02679805c4c8", kill_on_drop: false }`
[INFO] [stdout] 94982ee71d9ff606e5c917b8eb08ff3789909602ce1b65e572ca02679805c4c8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fd05a119e7e5d5c16af571c2b6a71dbcacdfefac05e7550896865722dafefe6e
[INFO] running `Command { std: "docker" "start" "-a" "fd05a119e7e5d5c16af571c2b6a71dbcacdfefac05e7550896865722dafefe6e", kill_on_drop: false }`
[INFO] [stderr]    Compiling cow2 v0.2.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `FromCow` is never constructed
[INFO] [stdout]    --> src/like_impls.rs:435:12
[INFO] [stdout]     |
[INFO] [stdout] 435 |     struct FromCow;
[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 0.39s
[INFO] running `Command { std: "docker" "inspect" "fd05a119e7e5d5c16af571c2b6a71dbcacdfefac05e7550896865722dafefe6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd05a119e7e5d5c16af571c2b6a71dbcacdfefac05e7550896865722dafefe6e", kill_on_drop: false }`
[INFO] [stdout] fd05a119e7e5d5c16af571c2b6a71dbcacdfefac05e7550896865722dafefe6e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 56539dbeb21f67565c6e87bbfee06728c3c1e6bd206c6c60d8f43650f00a6161
[INFO] running `Command { std: "docker" "start" "-a" "56539dbeb21f67565c6e87bbfee06728c3c1e6bd206c6c60d8f43650f00a6161", kill_on_drop: false }`
[INFO] [stderr] warning: struct `FromCow` is never constructed
[INFO] [stderr]    --> src/like_impls.rs:435:12
[INFO] [stderr]     |
[INFO] [stderr] 435 |     struct FromCow;
[INFO] [stderr]     |            ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `cow2` (lib test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/cow2-0a2b403af4e3348c)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test like_impls::tests::from_test ... ok
[INFO] [stdout] test like_impls::tests::into_test ... ok
[INFO] [stderr]    Doc-tests cow2
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test src/lib.rs - (line 16) - compile fail ... ok
[INFO] [stdout] test src/lib.rs - (line 28) ... ok
[INFO] [stdout] test src/lib.rs - Cow (line 22) ... ok
[INFO] [stdout] test src/lib.rs - Cow<'_,B>::into_owned (line 104) ... ok
[INFO] [stdout] test src/lib.rs - Cow (line 43) ... ok
[INFO] [stdout] test src/lib.rs - Cow (line 31) ... ok
[INFO] [stdout] test src/lib.rs - Cow<'_,B>::into_owned (line 89) ... ok
[INFO] [stdout] test src/lib.rs - Cow<'_,B>::to_mut (line 57) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.45s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "56539dbeb21f67565c6e87bbfee06728c3c1e6bd206c6c60d8f43650f00a6161", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56539dbeb21f67565c6e87bbfee06728c3c1e6bd206c6c60d8f43650f00a6161", kill_on_drop: false }`
[INFO] [stdout] 56539dbeb21f67565c6e87bbfee06728c3c1e6bd206c6c60d8f43650f00a6161