[INFO] fetching crate computation-types 0.0.0...
[INFO] checking computation-types-0.0.0 against 1.95.0 for pr-155915
[INFO] extracting crate computation-types 0.0.0 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate computation-types 0.0.0
[INFO] finished tweaking crates.io crate computation-types 0.0.0
[INFO] tweaked toml for crates.io crate computation-types 0.0.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate computation-types 0.0.0 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 86 packages to latest compatible versions
[INFO] [stderr]       Adding downcast-rs v1.2.1 (available: v2.0.2)
[INFO] [stderr]       Adding ndarray v0.15.6 (available: v0.17.2)
[INFO] [stderr]       Adding rand v0.8.6 (available: v0.10.1)
[INFO] [stderr]       Adding test-strategy v0.3.1 (available: v0.4.5)
[INFO] [stderr]       Adding thiserror v1.0.69 (available: v2.0.18)
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded test-strategy v0.3.1
[INFO] [stderr]   Downloaded structmeta-derive v0.2.0
[INFO] [stderr]   Downloaded structmeta v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 18e8c738f98026c160d635dd9208f6fcee28fa5cb07fc726751bf0c51667f8da
[INFO] running `Command { std: "docker" "start" "-a" "18e8c738f98026c160d635dd9208f6fcee28fa5cb07fc726751bf0c51667f8da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "18e8c738f98026c160d635dd9208f6fcee28fa5cb07fc726751bf0c51667f8da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18e8c738f98026c160d635dd9208f6fcee28fa5cb07fc726751bf0c51667f8da", kill_on_drop: false }`
[INFO] [stdout] 18e8c738f98026c160d635dd9208f6fcee28fa5cb07fc726751bf0c51667f8da
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] b0fde5699553211e078358a9db979988f99fc508e7adc2dd935d9b7662c7a2cc
[INFO] running `Command { std: "docker" "start" "-a" "b0fde5699553211e078358a9db979988f99fc508e7adc2dd935d9b7662c7a2cc", kill_on_drop: false }`
[INFO] [stderr]     Checking getrandom v0.3.4
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]     Checking wait-timeout v0.2.1
[INFO] [stderr]     Checking ndarray v0.15.6
[INFO] [stderr]     Checking rusty-fork v0.3.1
[INFO] [stderr]     Checking rand_core v0.9.5
[INFO] [stderr]     Checking rand_xorshift v0.4.0
[INFO] [stderr]     Checking rand v0.9.4
[INFO] [stderr]     Checking rand_chacha v0.9.0
[INFO] [stderr]     Checking proptest v1.11.0
[INFO] [stderr]    Compiling structmeta-derive v0.2.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling structmeta v0.2.0
[INFO] [stderr]    Compiling test-strategy v0.3.1
[INFO] [stderr]     Checking thiserror v1.0.69
[INFO] [stderr]     Checking computation-types v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(min_specialization)]
[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 `computation-types` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(min_specialization)]
[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 `computation-types` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "b0fde5699553211e078358a9db979988f99fc508e7adc2dd935d9b7662c7a2cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0fde5699553211e078358a9db979988f99fc508e7adc2dd935d9b7662c7a2cc", kill_on_drop: false }`
[INFO] [stdout] b0fde5699553211e078358a9db979988f99fc508e7adc2dd935d9b7662c7a2cc
