[INFO] fetching crate bitman 2.0.1...
[INFO] checking bitman-2.0.1 against 1.95.0 for pr-155915
[INFO] extracting crate bitman 2.0.1 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate bitman 2.0.1
[INFO] finished tweaking crates.io crate bitman 2.0.1
[INFO] tweaked toml for crates.io crate bitman 2.0.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate bitman 2.0.1 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 315 packages to latest compatible versions
[INFO] [stderr]       Adding criterion v0.5.1 (available: v0.8.2)
[INFO] [stderr]       Adding libc-print v0.1.23 (available: v0.3.0)
[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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded signal-hook v0.4.4
[INFO] [stderr]   Downloaded blondie v0.5.3
[INFO] [stderr]   Downloaded libc-print v0.1.23
[INFO] [stderr]   Downloaded inplace-vec-builder v0.1.1
[INFO] [stderr]   Downloaded normpath v1.5.1
[INFO] [stderr]   Downloaded binary-merge v0.1.2
[INFO] [stderr]   Downloaded range-collections v0.4.6
[INFO] [stderr]   Downloaded clap_complete v4.6.4
[INFO] [stderr]   Downloaded pdb-addr2line v0.11.2
[INFO] [stderr]   Downloaded lzxd v0.2.6
[INFO] [stderr]   Downloaded cab v0.6.0
[INFO] [stderr]   Downloaded ruzstd v0.8.3
[INFO] [stderr]   Downloaded inferno v0.12.6
[INFO] [stderr]   Downloaded symsrv v0.5.6
[INFO] [stderr]   Downloaded quick-xml v0.39.4
[INFO] [stderr]   Downloaded pdb2 v0.9.2
[INFO] [stderr]   Downloaded object v0.38.1
[INFO] [stderr]   Downloaded flamegraph v0.6.12
[INFO] [stderr]   Downloaded elsa v1.11.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] f657868bd29d8d9356d8ad90ada17b75fbbe065decfc439b8959aa914ed90690
[INFO] running `Command { std: "docker" "start" "-a" "f657868bd29d8d9356d8ad90ada17b75fbbe065decfc439b8959aa914ed90690", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f657868bd29d8d9356d8ad90ada17b75fbbe065decfc439b8959aa914ed90690", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f657868bd29d8d9356d8ad90ada17b75fbbe065decfc439b8959aa914ed90690", kill_on_drop: false }`
[INFO] [stdout] f657868bd29d8d9356d8ad90ada17b75fbbe065decfc439b8959aa914ed90690
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] ebd0e8201f571661ed6b42a5a28bc95a06414d73ae806fb4fee3a9a7d7c28bc0
[INFO] running `Command { std: "docker" "start" "-a" "ebd0e8201f571661ed6b42a5a28bc95a06414d73ae806fb4fee3a9a7d7c28bc0", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]     Checking getrandom v0.3.4
[INFO] [stderr]     Checking regex-automata v0.4.14
[INFO] [stderr]    Compiling ahash v0.8.12
[INFO] [stderr]     Checking getrandom v0.4.2
[INFO] [stderr]    Compiling clap_derive v4.6.1
[INFO] [stderr]    Compiling signal-hook v0.4.4
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking num-format v0.4.4
[INFO] [stderr]     Checking console v0.16.3
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]     Checking camino v1.2.2
[INFO] [stderr]     Checking rgb v0.8.53
[INFO] [stderr]     Checking dashmap v6.1.0
[INFO] [stderr]     Checking cargo-platform v0.3.3
[INFO] [stderr]     Checking semver v1.0.28
[INFO] [stderr]     Checking rand_core v0.9.5
[INFO] [stderr]     Checking tempfile v3.27.0
[INFO] [stderr]     Checking wait-timeout v0.2.1
[INFO] [stderr]     Checking quick-xml v0.39.4
[INFO] [stderr]     Checking str_stack v0.1.0
[INFO] [stderr]     Checking libc-print v0.1.23
[INFO] [stderr]     Checking rusty-fork v0.3.1
[INFO] [stderr]     Checking shlex v1.3.0
[INFO] [stderr]     Checking rustc-demangle v0.1.27
[INFO] [stderr]     Checking indicatif v0.18.4
[INFO] [stderr]     Checking bitman v2.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rand_xorshift v0.4.0
[INFO] [stderr]     Checking rand v0.9.4
[INFO] [stderr]     Checking rand_chacha v0.9.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(specialization)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking ciborium v0.2.2
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bitman` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "ebd0e8201f571661ed6b42a5a28bc95a06414d73ae806fb4fee3a9a7d7c28bc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebd0e8201f571661ed6b42a5a28bc95a06414d73ae806fb4fee3a9a7d7c28bc0", kill_on_drop: false }`
[INFO] [stdout] ebd0e8201f571661ed6b42a5a28bc95a06414d73ae806fb4fee3a9a7d7c28bc0
