[INFO] fetching crate zutil-logger 0.1.0...
[INFO] checking zutil-logger-0.1.0 against 1.95.0 for pr-155915
[INFO] extracting crate zutil-logger 0.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate zutil-logger 0.1.0
[INFO] finished tweaking crates.io crate zutil-logger 0.1.0
[INFO] tweaked toml for crates.io crate zutil-logger 0.1.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate zutil-logger 0.1.0 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] crate crates.io crate zutil-logger 0.1.0 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded zutil-cloned v0.1.0
[INFO] [stderr]   Downloaded duplicate v2.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] e030696b8caf1bf62c19377e9000c5fb9e5b4b6a6d2f01f323a2c188d0a52568
[INFO] running `Command { std: "docker" "start" "-a" "e030696b8caf1bf62c19377e9000c5fb9e5b4b6a6d2f01f323a2c188d0a52568", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e030696b8caf1bf62c19377e9000c5fb9e5b4b6a6d2f01f323a2c188d0a52568", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e030696b8caf1bf62c19377e9000c5fb9e5b4b6a6d2f01f323a2c188d0a52568", kill_on_drop: false }`
[INFO] [stdout] e030696b8caf1bf62c19377e9000c5fb9e5b4b6a6d2f01f323a2c188d0a52568
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] b23db162ed6dc7467c9700ac36be944d0047593ec3499bba266844d6e559432f
[INFO] running `Command { std: "docker" "start" "-a" "b23db162ed6dc7467c9700ac36be944d0047593ec3499bba266844d6e559432f", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.19
[INFO] [stderr]     Checking log v0.4.28
[INFO] [stderr]     Checking regex-syntax v0.8.6
[INFO] [stderr]    Compiling yansi v1.0.1
[INFO] [stderr]     Checking cfg-if v1.0.3
[INFO] [stderr]     Checking nu-ansi-term v0.50.1
[INFO] [stderr]     Checking smallvec v1.15.1
[INFO] [stderr]    Compiling proc-macro2-diagnostics v0.10.1
[INFO] [stderr]     Checking tracing-core v0.1.34
[INFO] [stderr]     Checking itertools v0.14.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]     Checking thread_local v1.1.9
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]     Checking tracing-log v0.2.0
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]     Checking regex-automata v0.4.11
[INFO] [stderr]     Checking matchers v0.2.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.30
[INFO] [stderr]    Compiling duplicate v2.0.0
[INFO] [stderr]    Compiling zutil-cloned v0.1.0
[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/zutil-cloned-0.1.0/src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(if_let_guard, try_blocks)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `if_let_guard` has been stable since `1.95.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `zutil-cloned` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "b23db162ed6dc7467c9700ac36be944d0047593ec3499bba266844d6e559432f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b23db162ed6dc7467c9700ac36be944d0047593ec3499bba266844d6e559432f", kill_on_drop: false }`
[INFO] [stdout] b23db162ed6dc7467c9700ac36be944d0047593ec3499bba266844d6e559432f
