[INFO] cloning repository https://github.com/jackwillis/rtttl
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jackwillis/rtttl" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjackwillis%2Frtttl", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjackwillis%2Frtttl'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bc2818e3e3f27b024d283c818ecadb5d4d793697
[INFO] testing jackwillis/rtttl against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjackwillis%2Frtttl" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jackwillis/rtttl on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jackwillis/rtttl
[INFO] finished tweaking git repo https://github.com/jackwillis/rtttl
[INFO] tweaked toml for git repo https://github.com/jackwillis/rtttl written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/jackwillis/rtttl already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded thread_local v0.3.3
[INFO] [stderr]   Downloaded thread-id v3.1.0
[INFO] [stderr]   Downloaded num-bigint v0.1.39
[INFO] [stderr]   Downloaded num-rational v0.1.38
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cdcd27e37342ae8e638b1e0998c749cb88167161ef6413a6f05d3d11a5316371
[INFO] running `Command { std: "docker" "start" "-a" "cdcd27e37342ae8e638b1e0998c749cb88167161ef6413a6f05d3d11a5316371", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cdcd27e37342ae8e638b1e0998c749cb88167161ef6413a6f05d3d11a5316371", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cdcd27e37342ae8e638b1e0998c749cb88167161ef6413a6f05d3d11a5316371", kill_on_drop: false }`
[INFO] [stdout] cdcd27e37342ae8e638b1e0998c749cb88167161ef6413a6f05d3d11a5316371
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ae3e5be1a95555081b9375ae4357a94a8eecf05313dce6fd411945c677dbaf87
[INFO] running `Command { std: "docker" "start" "-a" "ae3e5be1a95555081b9375ae4357a94a8eecf05313dce6fd411945c677dbaf87", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.23
[INFO] [stderr]    Compiling num-traits v0.1.39
[INFO] [stderr]    Compiling regex-syntax v0.4.1
[INFO] [stderr]    Compiling lazy_static v0.2.8
[INFO] [stderr]    Compiling thread-id v3.1.0
[INFO] [stderr]    Compiling memchr v1.0.1
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling thread_local v0.3.3
[INFO] [stderr]    Compiling aho-corasick v0.6.3
[INFO] [stderr]    Compiling num-integer v0.1.34
[INFO] [stderr]    Compiling regex v0.2.2
[INFO] [stderr]    Compiling num-bigint v0.1.39
[INFO] [stderr]    Compiling num-rational v0.1.38
[INFO] [stderr]    Compiling rtttl v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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(try_from)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/metadata.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | / lazy_static! {
[INFO] [stdout] 13 | |     static ref DEFAULT_METADATA: Metadata = Metadata {
[INFO] [stdout] 14 | |         duration: 4,
[INFO] [stdout] 15 | |         octave: 3,
[INFO] [stdout] 16 | |         bpm: 120
[INFO] [stdout] 17 | |     };
[INFO] [stdout] 18 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/metadata.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | / lazy_static! {
[INFO] [stdout] 13 | |     static ref DEFAULT_METADATA: Metadata = Metadata {
[INFO] [stdout] 14 | |         duration: 4,
[INFO] [stdout] 15 | |         octave: 3,
[INFO] [stdout] 16 | |         bpm: 120
[INFO] [stdout] 17 | |     };
[INFO] [stdout] 18 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/note.rs:29:1
[INFO] [stdout]    |
[INFO] [stdout] 29 | / lazy_static! {
[INFO] [stdout] 30 | |     static ref NOTE_REGEX: Regex = Regex::new(r"(-?\d+)?([a-gp]#?)(-?\d+)?(\.)?").unwrap();
[INFO] [stdout] 31 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/note.rs:29:1
[INFO] [stdout]    |
[INFO] [stdout] 29 | / lazy_static! {
[INFO] [stdout] 30 | |     static ref NOTE_REGEX: Regex = Regex::new(r"(-?\d+)?([a-gp]#?)(-?\d+)?(\.)?").unwrap();
[INFO] [stdout] 31 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 4 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 `rtttl` due to 3 previous errors; 4 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "ae3e5be1a95555081b9375ae4357a94a8eecf05313dce6fd411945c677dbaf87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae3e5be1a95555081b9375ae4357a94a8eecf05313dce6fd411945c677dbaf87", kill_on_drop: false }`
[INFO] [stdout] ae3e5be1a95555081b9375ae4357a94a8eecf05313dce6fd411945c677dbaf87