[INFO] fetching crate lumen-nn 0.5.0...
[INFO] checking lumen-nn-0.5.0 against 1.95.0 for pr-155915
[INFO] extracting crate lumen-nn 0.5.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate lumen-nn 0.5.0
[INFO] finished tweaking crates.io crate lumen-nn 0.5.0
[INFO] tweaked toml for crates.io crate lumen-nn 0.5.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate lumen-nn 0.5.0 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 lumen-nn 0.5.0 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 bitflags v2.9.3
[INFO] [stderr]   Downloaded liblzma v0.4.6
[INFO] [stderr]   Downloaded lumen-macros v0.5.0
[INFO] [stderr]   Downloaded thiserrorctx v1.0.0
[INFO] [stderr]   Downloaded derive-new v0.7.0
[INFO] [stderr]   Downloaded zmij v1.0.6
[INFO] [stderr]   Downloaded deflate64 v0.1.11
[INFO] [stderr]   Downloaded thiserrorctx-impl v1.0.0
[INFO] [stderr]   Downloaded lumen-core v0.5.0
[INFO] [stderr]   Downloaded zip v4.6.1
[INFO] [stderr]   Downloaded liblzma-sys v0.4.5
[INFO] [stderr]   Downloaded lumen-io v0.5.0
[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] 3760d4974db789d11d48c5a329bda34ee695f4e717d3ba1e76d2fc9102a6e03f
[INFO] running `Command { std: "docker" "start" "-a" "3760d4974db789d11d48c5a329bda34ee695f4e717d3ba1e76d2fc9102a6e03f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3760d4974db789d11d48c5a329bda34ee695f4e717d3ba1e76d2fc9102a6e03f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3760d4974db789d11d48c5a329bda34ee695f4e717d3ba1e76d2fc9102a6e03f", kill_on_drop: false }`
[INFO] [stdout] 3760d4974db789d11d48c5a329bda34ee695f4e717d3ba1e76d2fc9102a6e03f
[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] b96a0f059ec186545b5a889b900dfa85db71399efa739a674884a98eff4ba6b3
[INFO] running `Command { std: "docker" "start" "-a" "b96a0f059ec186545b5a889b900dfa85db71399efa739a674884a98eff4ba6b3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]    Compiling find-msvc-tools v0.1.6
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]    Compiling zerocopy v0.8.26
[INFO] [stderr]    Compiling thiserror v2.0.16
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling zstd-safe v7.2.4
[INFO] [stderr]     Checking zlib-rs v0.5.5
[INFO] [stderr]    Compiling zmij v1.0.6
[INFO] [stderr]     Checking deranged v0.5.8
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking cipher v0.4.4
[INFO] [stderr]     Checking simd-adler32 v0.3.8
[INFO] [stderr]     Checking num-conv v0.2.0
[INFO] [stderr]     Checking libbz2-rs-sys v0.2.2
[INFO] [stderr]     Checking bitflags v2.9.3
[INFO] [stderr]    Compiling serde_json v1.0.148
[INFO] [stderr]     Checking time-core v0.1.8
[INFO] [stderr]    Compiling quote v1.0.42
[INFO] [stderr]     Checking bumpalo v3.19.1
[INFO] [stderr]     Checking indexmap v2.12.1
[INFO] [stderr]     Checking deflate64 v0.1.11
[INFO] [stderr]     Checking rustix v1.1.2
[INFO] [stderr]     Checking ppmd-rust v1.4.0
[INFO] [stderr]     Checking zopfli v0.8.3
[INFO] [stderr]     Checking aes v0.8.4
[INFO] [stderr]     Checking hmac v0.12.1
[INFO] [stderr]     Checking sha1 v0.10.6
[INFO] [stderr]    Compiling syn v2.0.111
[INFO] [stderr]     Checking once_cell v1.21.3
[INFO] [stderr]     Checking pbkdf2 v0.12.2
[INFO] [stderr]     Checking bzip2 v0.6.1
[INFO] [stderr]    Compiling jobserver v0.1.34
[INFO] [stderr]     Checking memmap2 v0.9.9
[INFO] [stderr]     Checking rand_core v0.9.3
[INFO] [stderr]    Compiling cc v1.2.51
[INFO] [stderr]     Checking libz-rs-sys v0.5.5
[INFO] [stderr]     Checking flate2 v1.1.5
[INFO] [stderr]     Checking approx v0.5.1
[INFO] [stderr]     Checking time v0.3.47
[INFO] [stderr]     Checking tempfile v3.23.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]     Checking rand_chacha v0.9.0
[INFO] [stderr]    Compiling zstd-sys v2.0.16+zstd.1.5.7
[INFO] [stderr]    Compiling liblzma-sys v0.4.5
[INFO] [stderr]     Checking rand v0.9.2
[INFO] [stderr]     Checking rand_distr v0.5.1
[INFO] [stderr]     Checking liblzma v0.4.6
[INFO] [stderr]    Compiling thiserror-impl v2.0.16
[INFO] [stderr]    Compiling thiserrorctx-impl v1.0.0
[INFO] [stderr]    Compiling zeroize_derive v1.4.3
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling derive-new v0.7.0
[INFO] [stderr]    Compiling lumen-macros v0.5.0
[INFO] [stderr]     Checking zeroize v1.8.2
[INFO] [stderr]     Checking thiserrorctx v1.0.0
[INFO] [stderr]     Checking lumen-core v0.5.0
[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/lumen-core-0.5.0/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(mapped_lock_guards)]
[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 `lumen-core` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "b96a0f059ec186545b5a889b900dfa85db71399efa739a674884a98eff4ba6b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b96a0f059ec186545b5a889b900dfa85db71399efa739a674884a98eff4ba6b3", kill_on_drop: false }`
[INFO] [stdout] b96a0f059ec186545b5a889b900dfa85db71399efa739a674884a98eff4ba6b3
