[INFO] fetching crate core2 0.4.0...
[INFO] testing core2-0.4.0 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-7
[INFO] extracting crate core2 0.4.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate core2 0.4.0
[INFO] finished tweaking crates.io crate core2 0.4.0
[INFO] tweaked toml for crates.io crate core2 0.4.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate core2 0.4.0 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 1 package to latest compatible version
[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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 64f8846068f8e8ec0f942ac0cf6a03ccd23f30d36bf0cc88ba4bad4f6d70bd4b
[INFO] running `Command { std: "docker" "start" "-a" "64f8846068f8e8ec0f942ac0cf6a03ccd23f30d36bf0cc88ba4bad4f6d70bd4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "64f8846068f8e8ec0f942ac0cf6a03ccd23f30d36bf0cc88ba4bad4f6d70bd4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64f8846068f8e8ec0f942ac0cf6a03ccd23f30d36bf0cc88ba4bad4f6d70bd4b", kill_on_drop: false }`
[INFO] [stdout] 64f8846068f8e8ec0f942ac0cf6a03ccd23f30d36bf0cc88ba4bad4f6d70bd4b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 28e436fb178c328de7ef6f19d3a2d1fbc7441ff2950fe5e16a1ef5510b78e46e
[INFO] running `Command { std: "docker" "start" "-a" "28e436fb178c328de7ef6f19d3a2d1fbc7441ff2950fe5e16a1ef5510b78e46e", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.7.6
[INFO] [stderr]    Compiling core2 v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `Command { std: "docker" "inspect" "28e436fb178c328de7ef6f19d3a2d1fbc7441ff2950fe5e16a1ef5510b78e46e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28e436fb178c328de7ef6f19d3a2d1fbc7441ff2950fe5e16a1ef5510b78e46e", kill_on_drop: false }`
[INFO] [stdout] 28e436fb178c328de7ef6f19d3a2d1fbc7441ff2950fe5e16a1ef5510b78e46e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 482e6ff8614e9a40382a59961668272d7bd3ae32290d47f58f5a4a4d999e7b26
[INFO] running `Command { std: "docker" "start" "-a" "482e6ff8614e9a40382a59961668272d7bd3ae32290d47f58f5a4a4d999e7b26", kill_on_drop: false }`
[INFO] [stderr]    Compiling core2 v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `ExampleSliceReader` is never constructed
[INFO] [stdout]    --> tests/tests.rs:286:8
[INFO] [stdout]     |
[INFO] [stdout] 286 | struct ExampleSliceReader<'a> {
[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 0.50s
[INFO] running `Command { std: "docker" "inspect" "482e6ff8614e9a40382a59961668272d7bd3ae32290d47f58f5a4a4d999e7b26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "482e6ff8614e9a40382a59961668272d7bd3ae32290d47f58f5a4a4d999e7b26", kill_on_drop: false }`
[INFO] [stdout] 482e6ff8614e9a40382a59961668272d7bd3ae32290d47f58f5a4a4d999e7b26
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 22de6db75b38b3f9173e261997eab706ba562e779506bd29be11fb5400065f07
[INFO] running `Command { std: "docker" "start" "-a" "22de6db75b38b3f9173e261997eab706ba562e779506bd29be11fb5400065f07", kill_on_drop: false }`
[INFO] [stderr] warning: struct `ExampleSliceReader` is never constructed
[INFO] [stderr]    --> tests/tests.rs:286:8
[INFO] [stderr]     |
[INFO] [stderr] 286 | struct ExampleSliceReader<'a> {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `core2` (test "tests") generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/core2-74f6ac821c37e61c)
[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]      Running tests/tests.rs (/opt/rustwide/target/debug/deps/tests-c2ea29378831b8bb)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test chain_bufread ... ok
[INFO] [stdout] test read_exact ... ok
[INFO] [stdout] test read_exact_slice ... ok
[INFO] [stdout] test take_eof ... ok
[INFO] [stdout] test test_writer_read_from_one_buf ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests core2
[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" "22de6db75b38b3f9173e261997eab706ba562e779506bd29be11fb5400065f07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22de6db75b38b3f9173e261997eab706ba562e779506bd29be11fb5400065f07", kill_on_drop: false }`
[INFO] [stdout] 22de6db75b38b3f9173e261997eab706ba562e779506bd29be11fb5400065f07