[INFO] fetching crate bbnf_derive 0.2.9...
[INFO] checking bbnf_derive-0.2.9 against 1.95.0 for pr-155915
[INFO] extracting crate bbnf_derive 0.2.9 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate bbnf_derive 0.2.9
[INFO] finished tweaking crates.io crate bbnf_derive 0.2.9
[INFO] tweaked toml for crates.io crate bbnf_derive 0.2.9 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate bbnf_derive 0.2.9 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 bbnf_derive 0.2.9 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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pprint v0.3.6
[INFO] [stderr]   Downloaded pprint_derive v0.2.2
[INFO] [stderr]   Downloaded bbnf v0.2.8
[INFO] [stderr]   Downloaded bbnf-ir v0.1.4
[INFO] [stderr]   Downloaded smallbox v0.8.8
[INFO] [stderr]   Downloaded parse_that v0.3.3
[INFO] [stderr]   Downloaded dragonbox v0.1.12
[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] d6ae1278534f8af1f52d0a6f1b7a3bd17d8a1e426dac7a34f17304ee54d74267
[INFO] running `Command { std: "docker" "start" "-a" "d6ae1278534f8af1f52d0a6f1b7a3bd17d8a1e426dac7a34f17304ee54d74267", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d6ae1278534f8af1f52d0a6f1b7a3bd17d8a1e426dac7a34f17304ee54d74267", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6ae1278534f8af1f52d0a6f1b7a3bd17d8a1e426dac7a34f17304ee54d74267", kill_on_drop: false }`
[INFO] [stdout] d6ae1278534f8af1f52d0a6f1b7a3bd17d8a1e426dac7a34f17304ee54d74267
[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] 9a581acba48fb293c9a549b705ff16044a033b14595ece472c460ec596365bd6
[INFO] running `Command { std: "docker" "start" "-a" "9a581acba48fb293c9a549b705ff16044a033b14595ece472c460ec596365bd6", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]     Checking regex-syntax v0.8.10
[INFO] [stderr]    Compiling dragonbox v0.1.12
[INFO] [stderr]    Compiling smallbox v0.8.8
[INFO] [stderr]     Checking itoap v1.0.1
[INFO] [stderr]     Checking rustc-hash v2.1.1
[INFO] [stderr]     Checking either v1.15.0
[INFO] [stderr]     Checking aho-corasick v1.1.4
[INFO] [stderr]    Compiling zmij v1.0.21
[INFO] [stderr]    Compiling rayon-core v1.13.0
[INFO] [stderr]     Checking serde_core v1.0.228
[INFO] [stderr]     Checking itoa v1.0.17
[INFO] [stderr]     Checking equivalent v1.0.2
[INFO] [stderr]     Checking num-traits v0.2.19
[INFO] [stderr]     Checking smallvec v1.15.1
[INFO] [stderr]     Checking fast-float2 v0.2.3
[INFO] [stderr]     Checking hashbrown v0.16.1
[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/smallbox-0.8.8/src/lib.rs:168:34
[INFO] [stdout]     |
[INFO] [stdout] 168 | #![cfg_attr(feature = "nightly", feature(strict_provenance, set_ptr_value))]
[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 `smallbox` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "9a581acba48fb293c9a549b705ff16044a033b14595ece472c460ec596365bd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a581acba48fb293c9a549b705ff16044a033b14595ece472c460ec596365bd6", kill_on_drop: false }`
[INFO] [stdout] 9a581acba48fb293c9a549b705ff16044a033b14595ece472c460ec596365bd6