[INFO] fetching crate u4 0.1.2...
[INFO] testing u4-0.1.2 against master#ec6f9a5b4413f74386267ef8efc93712c2ce6db6 for pr-155739-1
[INFO] extracting crate u4 0.1.2 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate u4 0.1.2
[INFO] finished tweaking crates.io crate u4 0.1.2
[INFO] tweaked toml for crates.io crate u4 0.1.2 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate u4 0.1.2 on toolchain ec6f9a5b4413f74386267ef8efc93712c2ce6db6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "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" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 52 packages to latest compatible versions
[INFO] [stderr]       Adding itertools v0.13.0 (available: v0.14.0)
[INFO] [stderr]       Adding zerocopy v0.7.35 (available: v0.8.48)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rand_core v0.10.1
[INFO] [stderr]   Downloaded rand v0.10.1
[INFO] [stderr]   Downloaded structmeta-derive v0.2.0
[INFO] [stderr]   Downloaded structmeta v0.2.0
[INFO] [stderr]   Downloaded const-default v1.0.0
[INFO] [stderr]   Downloaded quickcheck v1.1.0
[INFO] [stderr]   Downloaded derive-quickcheck-arbitrary v0.1.3
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 991f588e9b7817a418e5da1318a2f9fbf7adb71d973b8a8f35976b38a56cf73a
[INFO] running `Command { std: "docker" "start" "-a" "991f588e9b7817a418e5da1318a2f9fbf7adb71d973b8a8f35976b38a56cf73a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "991f588e9b7817a418e5da1318a2f9fbf7adb71d973b8a8f35976b38a56cf73a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "991f588e9b7817a418e5da1318a2f9fbf7adb71d973b8a8f35976b38a56cf73a", kill_on_drop: false }`
[INFO] [stdout] 991f588e9b7817a418e5da1318a2f9fbf7adb71d973b8a8f35976b38a56cf73a
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cf060686293a3278b161fc198d60c192715bbae06bf844be96c8650e7b6dcc22
[INFO] running `Command { std: "docker" "start" "-a" "cf060686293a3278b161fc198d60c192715bbae06bf844be96c8650e7b6dcc22", kill_on_drop: false }`
[INFO] [stderr]    Compiling u4 v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `forward`
[INFO] [stdout]    --> src/lib.rs:880:16
[INFO] [stdout]     |
[INFO] [stdout] 880 | pub(crate) use forward;
[INFO] [stdout]     |                ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `backward`
[INFO] [stdout]    --> src/lib.rs:889:16
[INFO] [stdout]     |
[INFO] [stdout] 889 | pub(crate) use backward;
[INFO] [stdout]     |                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "cf060686293a3278b161fc198d60c192715bbae06bf844be96c8650e7b6dcc22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf060686293a3278b161fc198d60c192715bbae06bf844be96c8650e7b6dcc22", kill_on_drop: false }`
[INFO] [stdout] cf060686293a3278b161fc198d60c192715bbae06bf844be96c8650e7b6dcc22
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 08d1c577a33b85dd13ac2062e318231595992d92bb2a13eb4e19d5c4f80b4779
[INFO] running `Command { std: "docker" "start" "-a" "08d1c577a33b85dd13ac2062e318231595992d92bb2a13eb4e19d5c4f80b4779", kill_on_drop: false }`
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stdout] warning: unused import: `forward`
[INFO] [stdout]    --> src/lib.rs:880:16
[INFO] [stdout]     |
[INFO] [stdout] 880 | pub(crate) use forward;
[INFO] [stdout]     |                ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `backward`
[INFO] [stdout]    --> src/lib.rs:889:16
[INFO] [stdout]     |
[INFO] [stdout] 889 | pub(crate) use backward;
[INFO] [stdout]     |                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling itertools v0.13.0
[INFO] [stderr]    Compiling u4 v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `forward`
[INFO] [stdout]    --> src/lib.rs:880:16
[INFO] [stdout]     |
[INFO] [stdout] 880 | pub(crate) use forward;
[INFO] [stdout]     |                ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `backward`
[INFO] [stdout]    --> src/lib.rs:889:16
[INFO] [stdout]     |
[INFO] [stdout] 889 | pub(crate) use backward;
[INFO] [stdout]     |                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.84s
[INFO] running `Command { std: "docker" "inspect" "08d1c577a33b85dd13ac2062e318231595992d92bb2a13eb4e19d5c4f80b4779", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08d1c577a33b85dd13ac2062e318231595992d92bb2a13eb4e19d5c4f80b4779", kill_on_drop: false }`
[INFO] [stdout] 08d1c577a33b85dd13ac2062e318231595992d92bb2a13eb4e19d5c4f80b4779
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 08a0a540d5082c68faf00a050732ffb4a1258fbed5c7590478c6d1803fe04dc5
[INFO] running `Command { std: "docker" "start" "-a" "08a0a540d5082c68faf00a050732ffb4a1258fbed5c7590478c6d1803fe04dc5", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `forward`
[INFO] [stderr]    --> src/lib.rs:880:16
[INFO] [stderr]     |
[INFO] [stderr] 880 | pub(crate) use forward;
[INFO] [stderr]     |                ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `backward`
[INFO] [stderr]    --> src/lib.rs:889:16
[INFO] [stderr]     |
[INFO] [stderr] 889 | pub(crate) use backward;
[INFO] [stderr]     |                ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `u4` (lib) generated 2 warnings (run `cargo fix --lib -p u4` to apply 2 suggestions)
[INFO] [stderr] warning: `u4` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/u4-79a924324da96849)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test new_ref ... ok
[INFO] [stdout] test test_pos_overflow ... ok
[INFO] [stdout] test binops ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests u4
[INFO] [stdout] 
[INFO] [stdout] running 23 tests
[INFO] [stdout] test src/lib.rs - U4 (line 461) ... ok
[INFO] [stdout] test src/lib.rs - U4 (line 491) ... ok
[INFO] [stdout] test src/lib.rs - U4x2::left (line 578) ... ok
[INFO] [stdout] test src/lib.rs - AsNibbles<T>::set (line 805) ... ok
[INFO] [stdout] test src/lib.rs - U4 (line 446) ... ok
[INFO] [stdout] test src/lib.rs - U4 (line 476) ... ok
[INFO] [stdout] test src/lib.rs - U4x2::right (line 589) ... ok
[INFO] [stdout] test src/lib.rs - AsNibbles<T>::iter (line 789) ... ok
[INFO] [stdout] test src/lib.rs - U4::truncate (line 204) ... ok
[INFO] [stdout] test src/lib.rs - AsNibbles<T>::get (line 775) ... ok
[INFO] [stdout] test src/lib.rs - AsNibbles<T>::len (line 759) ... ok
[INFO] [stdout] test src/lib.rs - U4::new (line 159) ... ok
[INFO] [stdout] test src/lib.rs - AsNibbles<T>::pack_from_slice (line 824) ... ok
[INFO] [stdout] test src/lib.rs - AsNibbles<T>::reverse (line 846) ... ok
[INFO] [stdout] test src/lib.rs - U4x2::set_left (line 642) ... ok
[INFO] [stdout] test src/lib.rs - u4 (line 124) - compile fail ... ok
[INFO] [stdout] test src/lib.rs - U4 (line 506) ... ok
[INFO] [stdout] test src/lib.rs - U4x2::set_right (line 670) ... ok
[INFO] [stdout] test src/lib.rs - U4x2::swapped (line 613) ... ok
[INFO] [stdout] test src/lib.rs - U4x2::with_left (line 628) ... ok
[INFO] [stdout] test src/lib.rs - u4 (line 120) ... ok
[INFO] [stdout] test src/lib.rs - U4x2::swap (line 600) ... ok
[INFO] [stdout] test src/lib.rs - U4x2::with_right (line 656) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 23 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.28s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "08a0a540d5082c68faf00a050732ffb4a1258fbed5c7590478c6d1803fe04dc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08a0a540d5082c68faf00a050732ffb4a1258fbed5c7590478c6d1803fe04dc5", kill_on_drop: false }`
[INFO] [stdout] 08a0a540d5082c68faf00a050732ffb4a1258fbed5c7590478c6d1803fe04dc5
