[INFO] fetching crate u4 0.1.2...
[INFO] testing u4-0.1.2 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate u4 0.1.2 into /workspace/builds/worker-0-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-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate u4 0.1.2 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 22 packages to latest compatible versions
[INFO] [stderr]       Adding itertools v0.13.0 (available: v0.14.0)
[INFO] [stderr]       Adding zerocopy v0.7.35 (available: v0.8.27)
[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] [stderr]  Downloading crates ...
[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 derive-quickcheck-arbitrary v0.1.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 8f82089660d33716ad3472617080d883b0efde04a60aefae9f02c6bc1d185a05
[INFO] running `Command { std: "docker" "start" "-a" "8f82089660d33716ad3472617080d883b0efde04a60aefae9f02c6bc1d185a05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8f82089660d33716ad3472617080d883b0efde04a60aefae9f02c6bc1d185a05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f82089660d33716ad3472617080d883b0efde04a60aefae9f02c6bc1d185a05", kill_on_drop: false }`
[INFO] [stdout] 8f82089660d33716ad3472617080d883b0efde04a60aefae9f02c6bc1d185a05
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] aed08fd92d79123d41153d8c29cbdca8378b57e80a7620bdd69708f47157980f
[INFO] running `Command { std: "docker" "start" "-a" "aed08fd92d79123d41153d8c29cbdca8378b57e80a7620bdd69708f47157980f", 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 0.33s
[INFO] running `Command { std: "docker" "inspect" "aed08fd92d79123d41153d8c29cbdca8378b57e80a7620bdd69708f47157980f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aed08fd92d79123d41153d8c29cbdca8378b57e80a7620bdd69708f47157980f", kill_on_drop: false }`
[INFO] [stdout] aed08fd92d79123d41153d8c29cbdca8378b57e80a7620bdd69708f47157980f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 7fc4061f6c9842e7210f5888db0d00955b6f1c84a33b4de851e29c026e867561
[INFO] running `Command { std: "docker" "start" "-a" "7fc4061f6c9842e7210f5888db0d00955b6f1c84a33b4de851e29c026e867561", kill_on_drop: false }`
[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 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 0.43s
[INFO] running `Command { std: "docker" "inspect" "7fc4061f6c9842e7210f5888db0d00955b6f1c84a33b4de851e29c026e867561", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fc4061f6c9842e7210f5888db0d00955b6f1c84a33b4de851e29c026e867561", kill_on_drop: false }`
[INFO] [stdout] 7fc4061f6c9842e7210f5888db0d00955b6f1c84a33b4de851e29c026e867561
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] c15f00419a4b30c1fe8905ebe81d06aa878d9d26381fb715c9e2134850aed2bd
[INFO] running `Command { std: "docker" "start" "-a" "c15f00419a4b30c1fe8905ebe81d06aa878d9d26381fb715c9e2134850aed2bd", 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 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/u4-42004a6b7f52b291)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test new_ref ... ok
[INFO] [stdout] test binops ... ok
[INFO] [stdout] test test_pos_overflow ... 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 - AsNibbles<T>::pack_from_slice (line 824) ... ok
[INFO] [stdout] test src/lib.rs - U4::new (line 159) ... ok
[INFO] [stdout] test src/lib.rs - AsNibbles<T>::reverse (line 846) ... ok
[INFO] [stdout] test src/lib.rs - AsNibbles<T>::set (line 805) ... ok
[INFO] [stdout] test src/lib.rs - AsNibbles<T>::len (line 759) ... 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>::iter (line 789) ... ok
[INFO] [stdout] test src/lib.rs - U4x2::right (line 589) ... ok
[INFO] [stdout] test src/lib.rs - U4x2::set_left (line 642) ... ok
[INFO] [stdout] test src/lib.rs - U4 (line 476) ... ok
[INFO] [stdout] test src/lib.rs - U4 (line 446) ... ok
[INFO] [stdout] test src/lib.rs - U4x2::set_right (line 670) ... ok
[INFO] [stdout] test src/lib.rs - U4::truncate (line 204) ... ok
[INFO] [stdout] test src/lib.rs - U4x2::with_left (line 628) ... ok
[INFO] [stdout] test src/lib.rs - U4 (line 506) ... ok
[INFO] [stdout] test src/lib.rs - U4x2::swapped (line 613) ... ok
[INFO] [stdout] test src/lib.rs - AsNibbles<T>::get (line 775) ... ok
[INFO] [stdout] test src/lib.rs - u4 (line 124) - compile fail ... ok
[INFO] [stdout] test src/lib.rs - U4x2::swap (line 600) ... ok
[INFO] [stdout] test src/lib.rs - u4 (line 120) ... ok
[INFO] [stdout] test src/lib.rs - U4x2::with_right (line 656) ... ok
[INFO] [stdout] test src/lib.rs - U4 (line 461) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 23 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.02s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c15f00419a4b30c1fe8905ebe81d06aa878d9d26381fb715c9e2134850aed2bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c15f00419a4b30c1fe8905ebe81d06aa878d9d26381fb715c9e2134850aed2bd", kill_on_drop: false }`
[INFO] [stdout] c15f00419a4b30c1fe8905ebe81d06aa878d9d26381fb715c9e2134850aed2bd