[INFO] fetching crate ampc 0.5.0-alpha...
[INFO] testing ampc-0.5.0-alpha against 1.75.0 for beta-1.76-1
[INFO] extracting crate ampc 0.5.0-alpha into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate ampc 0.5.0-alpha on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ampc 0.5.0-alpha
[INFO] finished tweaking crates.io crate ampc 0.5.0-alpha
[INFO] tweaked toml for crates.io crate ampc 0.5.0-alpha written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate ampc 0.5.0-alpha 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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unicode-width v0.1.10
[INFO] [stderr]   Downloaded log v0.4.18
[INFO] [stderr]   Downloaded target-lexicon v0.12.7
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[INFO] [stderr]   Downloaded rustix v0.37.19
[INFO] [stderr]   Downloaded anstyle-parse v0.2.0
[INFO] [stderr]   Downloaded clap_lex v0.5.0
[INFO] [stderr]   Downloaded clap v4.3.2
[INFO] [stderr]   Downloaded cranelift-frontend v0.94.1
[INFO] [stderr]   Downloaded cranelift-isle v0.94.1
[INFO] [stderr]   Downloaded cranelift-codegen v0.94.1
[INFO] [stderr]   Downloaded gimli v0.27.2
[INFO] [stderr]   Downloaded object v0.30.3
[INFO] [stderr]   Downloaded proc-macro2 v1.0.59
[INFO] [stderr]   Downloaded libc v0.2.144
[INFO] [stderr]   Downloaded cranelift-entity v0.94.1
[INFO] [stderr]   Downloaded once_cell v1.17.2
[INFO] [stderr]   Downloaded cranelift-module v0.94.1
[INFO] [stderr]   Downloaded termcolor v1.2.0
[INFO] [stderr]   Downloaded byteorder v1.4.3
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[INFO] [stderr]   Downloaded slot-arena v0.1.0
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[INFO] [stderr]   Downloaded cranelift-object v0.94.1
[INFO] [stderr]   Downloaded cranelift-bforest v0.94.1
[INFO] [stderr]   Downloaded cranelift-native v0.94.1
[INFO] [stderr]   Downloaded cranelift v0.94.1
[INFO] [stderr]   Downloaded cranelift-codegen-shared v0.94.1
[INFO] [stderr]   Downloaded cranelift-codegen-meta v0.94.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 672920a34be8f45729cfc499ef4003e8529d3544bf41ced3001c359ef957c1d1
[INFO] running `Command { std: "docker" "start" "-a" "672920a34be8f45729cfc499ef4003e8529d3544bf41ced3001c359ef957c1d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "672920a34be8f45729cfc499ef4003e8529d3544bf41ced3001c359ef957c1d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "672920a34be8f45729cfc499ef4003e8529d3544bf41ced3001c359ef957c1d1", kill_on_drop: false }`
[INFO] [stdout] 672920a34be8f45729cfc499ef4003e8529d3544bf41ced3001c359ef957c1d1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 439b57d673ff9e47060b032faac038e12374717e84302f7aa158684160d037c7
[INFO] running `Command { std: "docker" "start" "-a" "439b57d673ff9e47060b032faac038e12374717e84302f7aa158684160d037c7", kill_on_drop: false }`
[INFO] [stderr]    Compiling ahash v0.8.3
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling once_cell v1.17.2
[INFO] [stderr]    Compiling cranelift-isle v0.94.1
[INFO] [stderr]    Compiling log v0.4.18
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.94.1
[INFO] [stderr]    Compiling libc v0.2.144
[INFO] [stderr]    Compiling target-lexicon v0.12.7
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling cranelift-entity v0.94.1
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stderr]    Compiling slice-group-by v0.3.1
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling smallvec v1.10.0
[INFO] [stderr]    Compiling fallible-iterator v0.2.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.59
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.94.1
[INFO] [stderr]    Compiling bumpalo v3.13.0
[INFO] [stderr]    Compiling rustix v0.37.19
[INFO] [stderr]    Compiling unicode-ident v1.0.9
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling cranelift-bforest v0.94.1
[INFO] [stderr]    Compiling quote v1.0.28
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling utf8parse v0.2.1
[INFO] [stderr]    Compiling regalloc2 v0.6.1
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling anstyle-parse v0.2.0
[INFO] [stderr]    Compiling anstyle-query v1.0.0
[INFO] [stderr]    Compiling hashbrown v0.13.2
[INFO] [stderr]    Compiling anstyle v1.0.0
[INFO] [stderr]    Compiling colorchoice v1.0.0
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling clap_lex v0.5.0
[INFO] [stderr]    Compiling termcolor v1.2.0
[INFO] [stderr]    Compiling unicode-xid v0.2.4
[INFO] [stderr]    Compiling slot-arena v0.1.0
[INFO] [stderr]    Compiling gimli v0.27.2
[INFO] [stderr]    Compiling unicode-width v0.1.10
[INFO] [stderr]    Compiling syn v2.0.18
[INFO] [stderr]    Compiling object v0.30.3
[INFO] [stderr]    Compiling cranelift-codegen v0.94.1
[INFO] [stderr]    Compiling is-terminal v0.4.7
[INFO] [stderr]    Compiling anstream v0.3.2
[INFO] [stderr]    Compiling clap_builder v4.3.1
[INFO] [stderr]    Compiling clap_derive v4.3.2
[INFO] [stderr]    Compiling clap v4.3.2
[INFO] [stderr]    Compiling cranelift-frontend v0.94.1
[INFO] [stderr]    Compiling cranelift-module v0.94.1
[INFO] [stderr]    Compiling cranelift-native v0.94.1
[INFO] [stderr]    Compiling cranelift-object v0.94.1
[INFO] [stderr]    Compiling cranelift v0.94.1
[INFO] [stderr]    Compiling ampc v0.5.0-alpha (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(box_patterns)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cranelift::*`
[INFO] [stdout]   --> src/clif/mod.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub use cranelift::*;
[INFO] [stdout]    |             ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cranelift_native as native`
[INFO] [stdout]   --> src/clif/mod.rs:14:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub use cranelift_native as native;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ampc` (lib) due to 2 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "439b57d673ff9e47060b032faac038e12374717e84302f7aa158684160d037c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "439b57d673ff9e47060b032faac038e12374717e84302f7aa158684160d037c7", kill_on_drop: false }`
[INFO] [stdout] 439b57d673ff9e47060b032faac038e12374717e84302f7aa158684160d037c7
