[INFO] fetching crate cow2 0.2.6...
[INFO] testing cow2-0.2.6 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate cow2 0.2.6 into /workspace/builds/worker-5-tc1/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-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate cow2 0.2.6 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 602bef7314dc0858c09d18de3ad9a56378c605a95f31c858a6bd93c8cfb89ad0
[INFO] running `Command { std: "docker" "start" "-a" "602bef7314dc0858c09d18de3ad9a56378c605a95f31c858a6bd93c8cfb89ad0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "602bef7314dc0858c09d18de3ad9a56378c605a95f31c858a6bd93c8cfb89ad0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "602bef7314dc0858c09d18de3ad9a56378c605a95f31c858a6bd93c8cfb89ad0", kill_on_drop: false }`
[INFO] [stdout] 602bef7314dc0858c09d18de3ad9a56378c605a95f31c858a6bd93c8cfb89ad0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ad7ea10bcd256fd9379c2034d258d892720e2dea6442d51fdb5bcee9274b2452
[INFO] running `Command { std: "docker" "start" "-a" "ad7ea10bcd256fd9379c2034d258d892720e2dea6442d51fdb5bcee9274b2452", kill_on_drop: false }`
[INFO] [stderr]    Compiling cow2 v0.2.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "ad7ea10bcd256fd9379c2034d258d892720e2dea6442d51fdb5bcee9274b2452", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad7ea10bcd256fd9379c2034d258d892720e2dea6442d51fdb5bcee9274b2452", kill_on_drop: false }`
[INFO] [stdout] ad7ea10bcd256fd9379c2034d258d892720e2dea6442d51fdb5bcee9274b2452
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fa0e3bc0a6d24455710cbe0b21bdbb48c5f0560e5612cef0843c9377e8618a61
[INFO] running `Command { std: "docker" "start" "-a" "fa0e3bc0a6d24455710cbe0b21bdbb48c5f0560e5612cef0843c9377e8618a61", 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 0.27s
[INFO] running `Command { std: "docker" "inspect" "fa0e3bc0a6d24455710cbe0b21bdbb48c5f0560e5612cef0843c9377e8618a61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa0e3bc0a6d24455710cbe0b21bdbb48c5f0560e5612cef0843c9377e8618a61", kill_on_drop: false }`
[INFO] [stdout] fa0e3bc0a6d24455710cbe0b21bdbb48c5f0560e5612cef0843c9377e8618a61
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 22e09bfa0097662f023c6476d671f5d1562a9f8c955681f8cf8f9fc65a42e94b
[INFO] running `Command { std: "docker" "start" "-a" "22e09bfa0097662f023c6476d671f5d1562a9f8c955681f8cf8f9fc65a42e94b", 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 0.04s
[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::into_test ... ok
[INFO] [stdout] test like_impls::tests::from_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests cow2
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test src/lib.rs - (line 16) - compile fail ... ok
[INFO] [stdout] test src/lib.rs - Cow (line 31) ... ok
[INFO] [stdout] test src/lib.rs - Cow<'_,B>::into_owned (line 104) ... ok
[INFO] [stdout] test src/lib.rs - Cow<'_,B>::into_owned (line 89) ... ok
[INFO] [stdout] test src/lib.rs - Cow (line 43) ... ok
[INFO] [stdout] test src/lib.rs - (line 28) ... ok
[INFO] [stdout] test src/lib.rs - Cow<'_,B>::to_mut (line 57) ... ok
[INFO] [stdout] test src/lib.rs - Cow (line 22) ... 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" "22e09bfa0097662f023c6476d671f5d1562a9f8c955681f8cf8f9fc65a42e94b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22e09bfa0097662f023c6476d671f5d1562a9f8c955681f8cf8f9fc65a42e94b", kill_on_drop: false }`
[INFO] [stdout] 22e09bfa0097662f023c6476d671f5d1562a9f8c955681f8cf8f9fc65a42e94b