[INFO] fetching crate algosul-derive 0.0.5...
[INFO] checking algosul-derive-0.0.5 against 1.95.0 for pr-155915
[INFO] extracting crate algosul-derive 0.0.5 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate algosul-derive 0.0.5
[INFO] finished tweaking crates.io crate algosul-derive 0.0.5
[INFO] tweaked toml for crates.io crate algosul-derive 0.0.5 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate algosul-derive 0.0.5 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 algosul-derive 0.0.5 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 anstyle-parse v0.2.7
[INFO] [stderr]   Downloaded colorchoice v1.0.4
[INFO] [stderr]   Downloaded anstyle-query v1.1.3
[INFO] [stderr]   Downloaded anstream v0.6.19
[INFO] [stderr]   Downloaded anstyle-wincon v3.0.9
[INFO] [stderr]   Downloaded anstyle v1.0.11
[INFO] [stderr]   Downloaded unicode-xid v0.2.6
[INFO] [stderr]   Downloaded glob v0.3.2
[INFO] [stderr]   Downloaded jiff-static v0.2.15
[INFO] [stderr]   Downloaded jiff v0.2.15
[INFO] [stderr]   Downloaded algosul-core v0.0.5
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 432bbd14a1b41622b28975a19b785c8aeb6acca079d8e8f5b7a5ac00e2af8cbd
[INFO] running `Command { std: "docker" "start" "-a" "432bbd14a1b41622b28975a19b785c8aeb6acca079d8e8f5b7a5ac00e2af8cbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "432bbd14a1b41622b28975a19b785c8aeb6acca079d8e8f5b7a5ac00e2af8cbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "432bbd14a1b41622b28975a19b785c8aeb6acca079d8e8f5b7a5ac00e2af8cbd", kill_on_drop: false }`
[INFO] [stdout] 432bbd14a1b41622b28975a19b785c8aeb6acca079d8e8f5b7a5ac00e2af8cbd
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8fe11318776f29461f88729bae8030364240d883c7e0ad984bb96c5626d79746
[INFO] running `Command { std: "docker" "start" "-a" "8fe11318776f29461f88729bae8030364240d883c7e0ad984bb96c5626d79746", kill_on_drop: false }`
[INFO] [stderr]     Checking memchr v2.7.5
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]     Checking unicode-ident v1.0.18
[INFO] [stderr]     Checking regex-syntax v0.8.5
[INFO] [stderr]     Checking utf8parse v0.2.2
[INFO] [stderr]     Checking log v0.4.27
[INFO] [stderr]     Checking anstyle v1.0.11
[INFO] [stderr]     Checking is_terminal_polyfill v1.70.1
[INFO] [stderr]     Checking colorchoice v1.0.4
[INFO] [stderr]     Checking anstyle-query v1.1.3
[INFO] [stderr]    Compiling algosul-derive v0.0.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking glob v0.3.2
[INFO] [stderr]     Checking jiff v0.2.15
[INFO] [stderr]     Checking unicode-xid v0.2.6
[INFO] [stderr]     Checking anstyle-parse v0.2.7
[INFO] [stderr]     Checking anstream v0.6.19
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]     Checking quote v1.0.40
[INFO] [stderr]     Checking syn v2.0.104
[INFO] [stderr]     Checking regex-automata v0.4.9
[INFO] [stderr]     Checking algosul-core v0.0.5
[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/algosul-core-0.0.5/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(extend_one)]
[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 `algosul-core` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "8fe11318776f29461f88729bae8030364240d883c7e0ad984bb96c5626d79746", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8fe11318776f29461f88729bae8030364240d883c7e0ad984bb96c5626d79746", kill_on_drop: false }`
[INFO] [stdout] 8fe11318776f29461f88729bae8030364240d883c7e0ad984bb96c5626d79746