[INFO] fetching crate multivers-runner 0.1.5...
[INFO] testing multivers-runner-0.1.5 against 1.91.0 for beta-1.92-2
[INFO] extracting crate multivers-runner 0.1.5 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate multivers-runner 0.1.5
[INFO] finished tweaking crates.io crate multivers-runner 0.1.5
[INFO] tweaked toml for crates.io crate multivers-runner 0.1.5 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate multivers-runner 0.1.5 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate multivers-runner 0.1.5 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" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded sacabase v2.0.0
[INFO] [stderr]   Downloaded tempfile v3.20.0
[INFO] [stderr]   Downloaded errno v0.3.12
[INFO] [stderr]   Downloaded qbsdiff v1.4.3
[INFO] [stderr]   Downloaded cdivsufsort v2.0.0
[INFO] [stderr]   Downloaded proc-exit v2.0.2
[INFO] [stderr]   Downloaded suffix_array v0.5.0
[INFO] [stderr]   Downloaded bzip2 v0.5.2
[INFO] [stderr]   Downloaded notstd_detect v0.6.0
[INFO] [stderr]   Downloaded rayon-core v1.12.1
[INFO] [stderr]   Downloaded rayon v1.10.0
[INFO] [stderr]   Downloaded cc v1.2.24
[INFO] [stderr]   Downloaded rustix v1.0.7
[INFO] [stderr]   Downloaded libc v0.2.172
[INFO] [stderr]   Downloaded linux-raw-sys v0.9.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 72d3b37d3eb207cf5033a81fdd8c0edb86bdf0feb37dcdda65c2e89ffe13ce19
[INFO] running `Command { std: "docker" "start" "-a" "72d3b37d3eb207cf5033a81fdd8c0edb86bdf0feb37dcdda65c2e89ffe13ce19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "72d3b37d3eb207cf5033a81fdd8c0edb86bdf0feb37dcdda65c2e89ffe13ce19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72d3b37d3eb207cf5033a81fdd8c0edb86bdf0feb37dcdda65c2e89ffe13ce19", kill_on_drop: false }`
[INFO] [stdout] 72d3b37d3eb207cf5033a81fdd8c0edb86bdf0feb37dcdda65c2e89ffe13ce19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a16f58b5ad3e4f22a8ed402d6000365b5f442fa5cb4c543b187edf10b663479f
[INFO] running `Command { std: "docker" "start" "-a" "a16f58b5ad3e4f22a8ed402d6000365b5f442fa5cb4c543b187edf10b663479f", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.2.24
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling pkg-config v0.3.32
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling serde_json v1.0.140
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling libc v0.2.172
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling itoa v1.0.15
[INFO] [stderr]    Compiling ryu v1.0.20
[INFO] [stderr]    Compiling proc-exit v2.0.2
[INFO] [stderr]    Compiling rustix v1.0.7
[INFO] [stderr]    Compiling linux-raw-sys v0.9.4
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling bitflags v2.9.1
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.101
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling notstd_detect v0.6.0
[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/notstd_detect-0.6.0/src/lib.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | #![feature(staged_api, doc_cfg, allow_internal_unstable)]
[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 `notstd_detect` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "a16f58b5ad3e4f22a8ed402d6000365b5f442fa5cb4c543b187edf10b663479f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a16f58b5ad3e4f22a8ed402d6000365b5f442fa5cb4c543b187edf10b663479f", kill_on_drop: false }`
[INFO] [stdout] a16f58b5ad3e4f22a8ed402d6000365b5f442fa5cb4c543b187edf10b663479f