[INFO] fetching crate reduce_unsafe 0.1.0...
[INFO] checking reduce_unsafe-0.1.0 against master#af4a5a13a15fa0c60e06321077ef452f769b42fd for pr-122960-3
[INFO] extracting crate reduce_unsafe 0.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate reduce_unsafe 0.1.0 on toolchain af4a5a13a15fa0c60e06321077ef452f769b42fd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate reduce_unsafe 0.1.0
[INFO] finished tweaking crates.io crate reduce_unsafe 0.1.0
[INFO] tweaked toml for crates.io crate reduce_unsafe 0.1.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cb3f8a36e0bce4d0ed63eb9ce783ce721a80787baebdd5ab047fdc2f36b5d367
[INFO] running `Command { std: "docker" "start" "-a" "cb3f8a36e0bce4d0ed63eb9ce783ce721a80787baebdd5ab047fdc2f36b5d367", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cb3f8a36e0bce4d0ed63eb9ce783ce721a80787baebdd5ab047fdc2f36b5d367", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb3f8a36e0bce4d0ed63eb9ce783ce721a80787baebdd5ab047fdc2f36b5d367", kill_on_drop: false }`
[INFO] [stdout] cb3f8a36e0bce4d0ed63eb9ce783ce721a80787baebdd5ab047fdc2f36b5d367
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f49825d4d99762663faeb5e6859fec4991fe622c9652d1970027c15f9e4ea6bc
[INFO] running `Command { std: "docker" "start" "-a" "f49825d4d99762663faeb5e6859fec4991fe622c9652d1970027c15f9e4ea6bc", kill_on_drop: false }`
[INFO] [stderr]     Checking reduce_unsafe v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: calls to `std::str::from_utf8_unchecked` with a invalid literal are undefined behavior
[INFO] [stdout]   --> src/lib.rs:85:18
[INFO] [stdout]    |
[INFO] [stdout] 83 |     let b = b"hello world\xff";
[INFO] [stdout]    |             ------------------ the literal was valid UTF-8 up to the 11 bytes
[INFO] [stdout] 84 |     let s = unchecked!(
[INFO] [stdout] 85 |         unsafe { core::str::from_utf8_unchecked(b) },
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[deny(invalid_from_utf8_unchecked)]` on by default
[INFO] [stdout]    = note: this error originates in the macro `__reduce_unsafe_internal` which comes from the expansion of the macro `unchecked` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: calls to `std::str::from_utf8_unchecked` with a invalid literal are undefined behavior
[INFO] [stdout]   --> src/lib.rs:96:18
[INFO] [stdout]    |
[INFO] [stdout] 94 |     let b = b"hello world\xff";
[INFO] [stdout]    |             ------------------ the literal was valid UTF-8 up to the 11 bytes
[INFO] [stdout] 95 |     let _ = checked!(
[INFO] [stdout] 96 |         unsafe { core::str::from_utf8_unchecked(b) },
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `__reduce_unsafe_internal` which comes from the expansion of the macro `checked` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::str::from_utf8` with a invalid literal always return an error
[INFO] [stdout]   --> src/lib.rs:97:9
[INFO] [stdout]    |
[INFO] [stdout] 94 |     let b = b"hello world\xff";
[INFO] [stdout]    |             ------------------ the literal was valid UTF-8 up to the 11 bytes
[INFO] [stdout] ...
[INFO] [stdout] 97 |         core::str::from_utf8(b).expect("BUG: unsound unsafe code detected")
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(invalid_from_utf8)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `__reduce_unsafe_internal` which comes from the expansion of the macro `checked` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `reduce_unsafe` (lib test) due to 3 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "f49825d4d99762663faeb5e6859fec4991fe622c9652d1970027c15f9e4ea6bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f49825d4d99762663faeb5e6859fec4991fe622c9652d1970027c15f9e4ea6bc", kill_on_drop: false }`
[INFO] [stdout] f49825d4d99762663faeb5e6859fec4991fe622c9652d1970027c15f9e4ea6bc