[INFO] fetching crate syllabize-es 0.5.3...
[INFO] testing syllabize-es-0.5.3 against 1.90.0 for beta-1.91-3
[INFO] extracting crate syllabize-es 0.5.3 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate syllabize-es 0.5.3
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate syllabize-es 0.5.3
[INFO] tweaked toml for crates.io crate syllabize-es 0.5.3 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate syllabize-es 0.5.3 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate syllabize-es 0.5.3 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cbcb7aa2303949fd71298b52c58fe2e3f18a52e15f608e76111baf0a60132a5f
[INFO] running `Command { std: "docker" "start" "-a" "cbcb7aa2303949fd71298b52c58fe2e3f18a52e15f608e76111baf0a60132a5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cbcb7aa2303949fd71298b52c58fe2e3f18a52e15f608e76111baf0a60132a5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cbcb7aa2303949fd71298b52c58fe2e3f18a52e15f608e76111baf0a60132a5f", kill_on_drop: false }`
[INFO] [stdout] cbcb7aa2303949fd71298b52c58fe2e3f18a52e15f608e76111baf0a60132a5f
[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=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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0b9da1bfff6682c586529a862125fa8a6cf6e1cdbd15b40a38793cc968cd6b34
[INFO] running `Command { std: "docker" "start" "-a" "0b9da1bfff6682c586529a862125fa8a6cf6e1cdbd15b40a38793cc968cd6b34", kill_on_drop: false }`
[INFO] [stderr]    Compiling syllabize-es v0.5.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:305:13
[INFO] [stdout]     |
[INFO] [stdout] 305 |             _ => panic!("Invalid stress count {}", d),
[INFO] [stdout]     |             ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/lib.rs:305:13
[INFO] [stdout]     |
[INFO] [stdout] 301 |             0 => StressType::Oxytone,
[INFO] [stdout]     |             - matches some of the same values
[INFO] [stdout] 302 |             1 => StressType::Paroxytone,
[INFO] [stdout]     |             - matches some of the same values
[INFO] [stdout] 303 |             2 => StressType::Proparoxytone,
[INFO] [stdout]     |             - matches some of the same values
[INFO] [stdout] 304 |             3.. => StressType::Superproparoxytone,
[INFO] [stdout]     |             --- matches some of the same values
[INFO] [stdout] 305 |             _ => panic!("Invalid stress count {}", d),
[INFO] [stdout]     |             ^ collectively making this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `syllabize-es` (lib) due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "0b9da1bfff6682c586529a862125fa8a6cf6e1cdbd15b40a38793cc968cd6b34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b9da1bfff6682c586529a862125fa8a6cf6e1cdbd15b40a38793cc968cd6b34", kill_on_drop: false }`
[INFO] [stdout] 0b9da1bfff6682c586529a862125fa8a6cf6e1cdbd15b40a38793cc968cd6b34