[INFO] fetching crate components-arena 4.2.3...
[INFO] checking components-arena-4.2.3 against 1.95.0 for pr-155915
[INFO] extracting crate components-arena 4.2.3 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate components-arena 4.2.3
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate components-arena 4.2.3
[INFO] tweaked toml for crates.io crate components-arena 4.2.3 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate components-arena 4.2.3 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate components-arena 4.2.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded quickcheck v1.0.3
[INFO] [stderr]   Downloaded educe v0.6.0
[INFO] [stderr]   Downloaded const-default-derive v0.2.0
[INFO] [stderr]   Downloaded memoffset v0.9.1
[INFO] [stderr]   Downloaded pc-ints v0.4.0
[INFO] [stderr]   Downloaded errno-no-std v0.2.2
[INFO] [stderr]   Downloaded panicking v0.7.0
[INFO] [stderr]   Downloaded iter-identify_first_last v0.2.3
[INFO] [stderr]   Downloaded print-no-std v0.3.0
[INFO] [stderr]   Downloaded sync-no-std v0.1.5
[INFO] [stderr]   Downloaded errno-sys v0.2.0
[INFO] [stderr]   Downloaded find-msvc-tools v0.1.5
[INFO] [stderr]   Downloaded phantom-type v0.5.2
[INFO] [stderr]   Downloaded generics v0.5.3
[INFO] [stderr]   Downloaded quickcheck_macros v1.1.0
[INFO] [stderr]   Downloaded litrs v1.0.0
[INFO] [stderr]   Downloaded exit-no-std v0.3.0
[INFO] [stderr]   Downloaded const-default v1.0.0
[INFO] [stderr]   Downloaded env_logger v0.8.4
[INFO] [stderr]   Downloaded widestring v1.2.1
[INFO] [stderr]   Downloaded components-arena-traits v1.2.0
[INFO] [stderr]   Downloaded regex v1.12.2
[INFO] [stderr]   Downloaded cc v1.2.49
[INFO] [stderr]   Downloaded indexmap v2.12.1
[INFO] [stderr]   Downloaded toml_edit v0.19.15
[INFO] [stderr]   Downloaded composable-allocators v0.3.5
[INFO] [stderr]   Downloaded macro-attr-2018 v3.0.1
[INFO] [stderr]   Downloaded proc-macro-crate v1.3.1
[INFO] [stderr]   Downloaded document-features v0.2.12
[INFO] [stderr]   Downloaded winnow v0.5.40
[INFO] [stderr]   Downloaded regex-syntax v0.8.8
[INFO] [stderr]   Downloaded regex-automata v0.4.13
[INFO] [stderr]   Downloaded libc v0.2.178
[INFO] [stderr]   Downloaded dos-cp v0.8.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d4fd3279dd173a0d0bb6798dc8d8bce67fa5c357c7ad75effe3721b50ed81618
[INFO] running `Command { std: "docker" "start" "-a" "d4fd3279dd173a0d0bb6798dc8d8bce67fa5c357c7ad75effe3721b50ed81618", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d4fd3279dd173a0d0bb6798dc8d8bce67fa5c357c7ad75effe3721b50ed81618", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4fd3279dd173a0d0bb6798dc8d8bce67fa5c357c7ad75effe3721b50ed81618", kill_on_drop: false }`
[INFO] [stdout] d4fd3279dd173a0d0bb6798dc8d8bce67fa5c357c7ad75effe3721b50ed81618
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 956d6386cb291213cdc89f556a832aa96322aa61ca139e9cafc1385732df6f5f
[INFO] running `Command { std: "docker" "start" "-a" "956d6386cb291213cdc89f556a832aa96322aa61ca139e9cafc1385732df6f5f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
[INFO] [stderr]    Compiling libc v0.2.178
[INFO] [stderr]    Compiling unicode-ident v1.0.22
[INFO] [stderr]    Compiling quote v1.0.42
[INFO] [stderr]    Compiling find-msvc-tools v0.1.5
[INFO] [stderr]    Compiling shlex v1.3.0
[INFO] [stderr]    Compiling equivalent v1.0.2
[INFO] [stderr]    Compiling hashbrown v0.16.1
[INFO] [stderr]    Compiling litrs v1.0.0
[INFO] [stderr]     Checking memchr v2.7.6
[INFO] [stderr]    Compiling winnow v0.5.40
[INFO] [stderr]    Compiling toml_datetime v0.6.11
[INFO] [stderr]     Checking cfg-if v1.0.4
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking regex-syntax v0.8.8
[INFO] [stderr]    Compiling once_cell v1.21.3
[INFO] [stderr]     Checking panicking v0.7.0
[INFO] [stderr]     Checking log v0.4.29
[INFO] [stderr]     Checking const-default v1.0.0
[INFO] [stderr]    Compiling cc v1.2.49
[INFO] [stderr]     Checking either v1.15.0
[INFO] [stderr]     Checking generics v0.5.3
[INFO] [stderr]     Checking components-arena-traits v1.2.0
[INFO] [stderr]     Checking macro-attr-2018 v3.0.1
[INFO] [stderr]    Compiling document-features v0.2.12
[INFO] [stderr]     Checking aho-corasick v1.1.4
[INFO] [stderr]    Compiling indexmap v2.12.1
[INFO] [stderr]    Compiling syn v2.0.111
[INFO] [stderr]    Compiling errno-sys v0.2.0
[INFO] [stderr]     Checking regex-automata v0.4.13
[INFO] [stderr]     Checking getrandom v0.2.16
[INFO] [stderr]     Checking sync-no-std v0.1.5
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/sync-no-std-0.1.5/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(allocator_api)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sync-no-std` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "956d6386cb291213cdc89f556a832aa96322aa61ca139e9cafc1385732df6f5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "956d6386cb291213cdc89f556a832aa96322aa61ca139e9cafc1385732df6f5f", kill_on_drop: false }`
[INFO] [stdout] 956d6386cb291213cdc89f556a832aa96322aa61ca139e9cafc1385732df6f5f
