[INFO] fetching crate tailed 0.0.1...
[INFO] testing tailed-0.0.1 against 1.75.0 for beta-1.76-1
[INFO] extracting crate tailed 0.0.1 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate tailed 0.0.1 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tailed 0.0.1
[INFO] finished tweaking crates.io crate tailed 0.0.1
[INFO] tweaked toml for crates.io crate tailed 0.0.1 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" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "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" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 211ee2c91c6d1726d91d613bbd863542782b9a652d1a0993233b515781abd3af
[INFO] running `Command { std: "docker" "start" "-a" "211ee2c91c6d1726d91d613bbd863542782b9a652d1a0993233b515781abd3af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "211ee2c91c6d1726d91d613bbd863542782b9a652d1a0993233b515781abd3af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "211ee2c91c6d1726d91d613bbd863542782b9a652d1a0993233b515781abd3af", kill_on_drop: false }`
[INFO] [stdout] 211ee2c91c6d1726d91d613bbd863542782b9a652d1a0993233b515781abd3af
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f77289363fb618a1a9d60f3297cf84ece0ec5b3587f66c7e60f7f8ee2786b0ce
[INFO] running `Command { std: "docker" "start" "-a" "f77289363fb618a1a9d60f3297cf84ece0ec5b3587f66c7e60f7f8ee2786b0ce", kill_on_drop: false }`
[INFO] [stderr]    Compiling tailed v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] running `Command { std: "docker" "inspect" "f77289363fb618a1a9d60f3297cf84ece0ec5b3587f66c7e60f7f8ee2786b0ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f77289363fb618a1a9d60f3297cf84ece0ec5b3587f66c7e60f7f8ee2786b0ce", kill_on_drop: false }`
[INFO] [stdout] f77289363fb618a1a9d60f3297cf84ece0ec5b3587f66c7e60f7f8ee2786b0ce
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.75.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f07b8c209d3a7effff0ec7d0ca384ed5ad74d2c4d940e91983d15e813a0b4671
[INFO] running `Command { std: "docker" "start" "-a" "f07b8c209d3a7effff0ec7d0ca384ed5ad74d2c4d940e91983d15e813a0b4671", kill_on_drop: false }`
[INFO] [stderr]    Compiling tailed v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.23s
[INFO] running `Command { std: "docker" "inspect" "f07b8c209d3a7effff0ec7d0ca384ed5ad74d2c4d940e91983d15e813a0b4671", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f07b8c209d3a7effff0ec7d0ca384ed5ad74d2c4d940e91983d15e813a0b4671", kill_on_drop: false }`
[INFO] [stdout] f07b8c209d3a7effff0ec7d0ca384ed5ad74d2c4d940e91983d15e813a0b4671
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.75.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ae950601b3927e0a6df79dcd786234689faaa4f772e59b19292afa76e5c748b6
[INFO] running `Command { std: "docker" "start" "-a" "ae950601b3927e0a6df79dcd786234689faaa4f772e59b19292afa76e5c748b6", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/tailed-27c8b067042f4069)
[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]    Doc-tests tailed
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/lib.rs - Tailed<mem::MaybeUninit<H>,[u8]>::from_bytes_with_length (line 149) ... FAILED
[INFO] [stdout] test src/lib.rs - Tailed<mem::MaybeUninit<H>,[u8]>::from_bytes (line 110) ... FAILED
[INFO] [stdout] test src/lib.rs - Tailed<H,[T]>::from_raw_parts_mut (line 84) ... ok
[INFO] [stdout] test src/lib.rs - Tailed<H,[T]>::from_raw_parts (line 57) ... ok
[INFO] [stdout] test src/lib.rs - Tailed<mem::MaybeUninit<H>,[u8]>::assume_init (line 234) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - Tailed<mem::MaybeUninit<H>,[u8]>::from_bytes_with_length (line 149) stdout ----
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:148:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(maybe_uninit_extra)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `maybe_uninit_extra` has been stable since 1.60.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:148:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(maybe_uninit_extra)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `read` found for union `MaybeUninit` in the current scope
[INFO] [stdout]   --> src/lib.rs:162:33
[INFO] [stdout]    |
[INFO] [stdout] 16 | assert_eq!(unsafe { tailed.head.read() }, Header {a: 0x0101, b: 0x02 });
[INFO] [stdout]    |                                 ^^^^ method not found in `MaybeUninit<Header>`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0599.
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - Tailed<mem::MaybeUninit<H>,[u8]>::from_bytes (line 110) stdout ----
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:109:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(maybe_uninit_extra)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `maybe_uninit_extra` has been stable since 1.60.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:109:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(maybe_uninit_extra)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `read` found for union `MaybeUninit` in the current scope
[INFO] [stdout]   --> src/lib.rs:123:33
[INFO] [stdout]    |
[INFO] [stdout] 16 | assert_eq!(unsafe { tailed.head.read() }, Header {a: 0x0101, b: 0x02 });
[INFO] [stdout]    |                                 ^^^^ method not found in `MaybeUninit<Header>`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0599.
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - Tailed<mem::MaybeUninit<H>,[u8]>::from_bytes (line 110)
[INFO] [stdout]     src/lib.rs - Tailed<mem::MaybeUninit<H>,[u8]>::from_bytes_with_length (line 149)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 3 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.25s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "ae950601b3927e0a6df79dcd786234689faaa4f772e59b19292afa76e5c748b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae950601b3927e0a6df79dcd786234689faaa4f772e59b19292afa76e5c748b6", kill_on_drop: false }`
[INFO] [stdout] ae950601b3927e0a6df79dcd786234689faaa4f772e59b19292afa76e5c748b6
[INFO] testing tailed-0.0.1 against beta-2023-12-22 for beta-1.76-1
[INFO] extracting crate tailed 0.0.1 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate tailed 0.0.1 on toolchain beta-2023-12-22
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tailed 0.0.1
[INFO] finished tweaking crates.io crate tailed 0.0.1
[INFO] tweaked toml for crates.io crate tailed 0.0.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ef60b34af7bd4452f962d5c2ec3a17553a104e272dce4661107e1d6d4e3f3a26
[INFO] running `Command { std: "docker" "start" "-a" "ef60b34af7bd4452f962d5c2ec3a17553a104e272dce4661107e1d6d4e3f3a26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef60b34af7bd4452f962d5c2ec3a17553a104e272dce4661107e1d6d4e3f3a26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef60b34af7bd4452f962d5c2ec3a17553a104e272dce4661107e1d6d4e3f3a26", kill_on_drop: false }`
[INFO] [stdout] ef60b34af7bd4452f962d5c2ec3a17553a104e272dce4661107e1d6d4e3f3a26
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2023-12-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 70242a29b5d2d993c7e9094d4bb6a39833768b5490edd0481115e7b410da5695
[INFO] running `Command { std: "docker" "start" "-a" "70242a29b5d2d993c7e9094d4bb6a39833768b5490edd0481115e7b410da5695", kill_on_drop: false }`
[INFO] [stderr]    Compiling tailed v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] running `Command { std: "docker" "inspect" "70242a29b5d2d993c7e9094d4bb6a39833768b5490edd0481115e7b410da5695", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70242a29b5d2d993c7e9094d4bb6a39833768b5490edd0481115e7b410da5695", kill_on_drop: false }`
[INFO] [stdout] 70242a29b5d2d993c7e9094d4bb6a39833768b5490edd0481115e7b410da5695
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2023-12-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5d89749f39922174f508b626b31f98a1fb489555b81cf0c4b3fe3f09d5cd8d09
[INFO] running `Command { std: "docker" "start" "-a" "5d89749f39922174f508b626b31f98a1fb489555b81cf0c4b3fe3f09d5cd8d09", kill_on_drop: false }`
[INFO] [stderr]    Compiling tailed v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.26s
[INFO] running `Command { std: "docker" "inspect" "5d89749f39922174f508b626b31f98a1fb489555b81cf0c4b3fe3f09d5cd8d09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d89749f39922174f508b626b31f98a1fb489555b81cf0c4b3fe3f09d5cd8d09", kill_on_drop: false }`
[INFO] [stdout] 5d89749f39922174f508b626b31f98a1fb489555b81cf0c4b3fe3f09d5cd8d09
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2023-12-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b050c13001a5051bccc582b4c84f6a27de235eb65f0f523deac955fec458724f
[INFO] running `Command { std: "docker" "start" "-a" "b050c13001a5051bccc582b4c84f6a27de235eb65f0f523deac955fec458724f", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/tailed-a3f2e9b934a3daf9)
[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]    Doc-tests tailed
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/lib.rs - Tailed<mem::MaybeUninit<H>,[u8]>::from_bytes (line 110) ... FAILED
[INFO] [stdout] test src/lib.rs - Tailed<mem::MaybeUninit<H>,[u8]>::from_bytes_with_length (line 149) ... FAILED
[INFO] [stdout] test src/lib.rs - Tailed<H,[T]>::from_raw_parts_mut (line 84) ... ok
[INFO] [stdout] test src/lib.rs - Tailed<H,[T]>::from_raw_parts (line 57) ... ok
[INFO] [stdout] test src/lib.rs - Tailed<mem::MaybeUninit<H>,[u8]>::assume_init (line 234) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - Tailed<mem::MaybeUninit<H>,[u8]>::from_bytes (line 110) stdout ----
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:109:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(maybe_uninit_extra)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `maybe_uninit_extra` has been stable since 1.60.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:109:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(maybe_uninit_extra)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `read` found for union `MaybeUninit` in the current scope
[INFO] [stdout]   --> src/lib.rs:123:33
[INFO] [stdout]    |
[INFO] [stdout] 16 | assert_eq!(unsafe { tailed.head.read() }, Header {a: 0x0101, b: 0x02 });
[INFO] [stdout]    |                                 ^^^^ method not found in `MaybeUninit<Header>`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0599.
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - Tailed<mem::MaybeUninit<H>,[u8]>::from_bytes_with_length (line 149) stdout ----
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:148:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(maybe_uninit_extra)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `maybe_uninit_extra` has been stable since 1.60.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:148:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(maybe_uninit_extra)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `read` found for union `MaybeUninit` in the current scope
[INFO] [stdout]   --> src/lib.rs:162:33
[INFO] [stdout]    |
[INFO] [stdout] 16 | assert_eq!(unsafe { tailed.head.read() }, Header {a: 0x0101, b: 0x02 });
[INFO] [stdout]    |                                 ^^^^ method not found in `MaybeUninit<Header>`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0599.
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - Tailed<mem::MaybeUninit<H>,[u8]>::from_bytes (line 110)
[INFO] [stdout]     src/lib.rs - Tailed<mem::MaybeUninit<H>,[u8]>::from_bytes_with_length (line 149)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 3 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.26s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "b050c13001a5051bccc582b4c84f6a27de235eb65f0f523deac955fec458724f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b050c13001a5051bccc582b4c84f6a27de235eb65f0f523deac955fec458724f", kill_on_drop: false }`
[INFO] [stdout] b050c13001a5051bccc582b4c84f6a27de235eb65f0f523deac955fec458724f
