[INFO] fetching crate midenc-codegen-masm 0.4.1...
[INFO] testing midenc-codegen-masm-0.4.1 against 1.91.0 for beta-1.92-2
[INFO] extracting crate midenc-codegen-masm 0.4.1 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate midenc-codegen-masm 0.4.1
[INFO] finished tweaking crates.io crate midenc-codegen-masm 0.4.1
[INFO] tweaked toml for crates.io crate midenc-codegen-masm 0.4.1 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate midenc-codegen-masm 0.4.1 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 midenc-codegen-masm 0.4.1 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 midenc-session v0.4.1
[INFO] [stderr]   Downloaded miden-formatting v0.1.1
[INFO] [stderr]   Downloaded miden-thiserror v1.0.59
[INFO] [stderr]   Downloaded midenc-hir-macros v0.4.1
[INFO] [stderr]   Downloaded miden-thiserror-impl v1.0.59
[INFO] [stderr]   Downloaded winter-utils v0.12.0
[INFO] [stderr]   Downloaded midenc-hir-symbol v0.4.1
[INFO] [stderr]   Downloaded winter-math v0.12.0
[INFO] [stderr]   Downloaded trybuild v1.0.106
[INFO] [stderr]   Downloaded generator v0.8.5
[INFO] [stderr]   Downloaded winter-air v0.12.3
[INFO] [stderr]   Downloaded blink-alloc v0.3.1
[INFO] [stderr]   Downloaded ascii-canvas v3.0.0
[INFO] [stderr]   Downloaded supports-hyperlinks v3.1.0
[INFO] [stderr]   Downloaded ena v0.14.3
[INFO] [stderr]   Downloaded midenc-dialect-hir v0.4.1
[INFO] [stderr]   Downloaded midenc-dialect-arith v0.4.1
[INFO] [stderr]   Downloaded miden-assembly v0.15.0
[INFO] [stderr]   Downloaded miden-air v0.15.0
[INFO] [stderr]   Downloaded miden-processor v0.15.0
[INFO] [stderr]   Downloaded miden-objects v0.10.0
[INFO] [stderr]   Downloaded midenc-hir v0.4.1
[INFO] [stderr]   Downloaded compact_str v0.9.0
[INFO] [stderr]   Downloaded lalrpop v0.20.2
[INFO] [stderr]   Downloaded loom v0.7.2
[INFO] [stderr]   Downloaded bech32 v0.11.0
[INFO] [stderr]   Downloaded miden-lib v0.10.0
[INFO] [stderr]   Downloaded midenc-hir-transform v0.4.1
[INFO] [stderr]   Downloaded miden-crypto v0.14.1
[INFO] [stderr]   Downloaded miden-miette v8.0.0
[INFO] [stderr]   Downloaded midenc-dialect-cf v0.4.1
[INFO] [stderr]   Downloaded midenc-dialect-scf v0.4.1
[INFO] [stderr]   Downloaded winter-prover v0.12.3
[INFO] [stderr]   Downloaded libredox v0.1.6
[INFO] [stderr]   Downloaded miden-core v0.15.0
[INFO] [stderr]   Downloaded miden-stdlib v0.15.0
[INFO] [stderr]   Downloaded intrusive-collections v0.9.7
[INFO] [stderr]   Downloaded inventory v0.3.20
[INFO] [stderr]   Downloaded term v0.7.0
[INFO] [stderr]   Downloaded lalrpop-util v0.20.2
[INFO] [stderr]   Downloaded owo-colors v4.2.2
[INFO] [stderr]   Downloaded vte v0.14.1
[INFO] [stderr]   Downloaded dissimilar v1.0.10
[INFO] [stderr]   Downloaded supports-unicode v3.0.0
[INFO] [stderr]   Downloaded terminal_size v0.3.0
[INFO] [stderr]   Downloaded target-triple v0.1.4
[INFO] [stderr]   Downloaded windows-collections v0.2.0
[INFO] [stderr]   Downloaded windows-threading v0.1.0
[INFO] [stderr]   Downloaded windows-future v0.2.1
[INFO] [stderr]   Downloaded windows-numerics v0.2.0
[INFO] [stderr]   Downloaded strip-ansi-escapes v0.2.1
[INFO] [stderr]   Downloaded supports-color v3.0.2
[INFO] [stderr]   Downloaded midenc-hir-type v0.4.1
[INFO] [stderr]   Downloaded winter-maybe-async v0.12.0
[INFO] [stderr]   Downloaded winter-fri v0.12.2
[INFO] [stderr]   Downloaded winter-verifier v0.12.3
[INFO] [stderr]   Downloaded miden-verifier v0.15.0
[INFO] [stderr]   Downloaded miden-mast-package v0.15.0
[INFO] [stderr]   Downloaded winter-crypto v0.12.0
[INFO] [stderr]   Downloaded miden-miette-derive v8.0.0
[INFO] [stderr]   Downloaded toml v0.9.2
[INFO] [stderr]   Downloaded windows v0.61.3
[INFO] [stderr]   Downloaded midenc-dialect-ub v0.4.1
[INFO] [stderr]   Downloaded midenc-hir-analysis v0.4.1
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6cce9bc5f362b723206c2ebc415aefc6050dd2ffd520d21ea015c33dd72f4268
[INFO] running `Command { std: "docker" "start" "-a" "6cce9bc5f362b723206c2ebc415aefc6050dd2ffd520d21ea015c33dd72f4268", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6cce9bc5f362b723206c2ebc415aefc6050dd2ffd520d21ea015c33dd72f4268", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6cce9bc5f362b723206c2ebc415aefc6050dd2ffd520d21ea015c33dd72f4268", kill_on_drop: false }`
[INFO] [stdout] 6cce9bc5f362b723206c2ebc415aefc6050dd2ffd520d21ea015c33dd72f4268
[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=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] 762c785fb0b791855457af9de99b552b4a5886aabe74f6e65e6a1e46cf80179f
[INFO] running `Command { std: "docker" "start" "-a" "762c785fb0b791855457af9de99b552b4a5886aabe74f6e65e6a1e46cf80179f", kill_on_drop: false }`
[INFO] [stderr]    Compiling allocator-api2 v0.2.21
[INFO] [stderr]    Compiling typenum v1.18.0
[INFO] [stderr]    Compiling memchr v2.7.5
[INFO] [stderr]    Compiling jobserver v0.1.33
[INFO] [stderr]    Compiling lock_api v0.4.13
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling object v0.36.7
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling hashbrown v0.15.4
[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/hashbrown-0.15.4/src/lib.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | /     feature(
[INFO] [stdout] 16 | |         test,
[INFO] [stdout] 17 | |         core_intrinsics,
[INFO] [stdout] 18 | |         dropck_eyepatch,
[INFO] [stdout] ...  |
[INFO] [stdout] 24 | |         strict_provenance_lints
[INFO] [stdout] 25 | |     )
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling cc v1.2.30
[INFO] [stderr]    Compiling winter-utils v0.12.0
[INFO] [stderr]    Compiling keccak v0.1.5
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hashbrown` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "762c785fb0b791855457af9de99b552b4a5886aabe74f6e65e6a1e46cf80179f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "762c785fb0b791855457af9de99b552b4a5886aabe74f6e65e6a1e46cf80179f", kill_on_drop: false }`
[INFO] [stdout] 762c785fb0b791855457af9de99b552b4a5886aabe74f6e65e6a1e46cf80179f