[INFO] fetching crate ada 0.3.0...
[INFO] testing ada-0.3.0 against 1.59.0 for beta-1.60-1
[INFO] extracting crate ada 0.3.0 into /workspace/builds/worker-15/source
[INFO] validating manifest of crates.io crate ada 0.3.0 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ada 0.3.0
[INFO] finished tweaking crates.io crate ada 0.3.0
[INFO] tweaked toml for crates.io crate ada 0.3.0 written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate crates.io crate ada 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "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 wayland-scanner v0.27.0
[INFO] [stderr]   Downloaded clang-sys v1.0.3
[INFO] [stderr]   Downloaded unidiff v0.3.3
[INFO] [stderr]   Downloaded sdl2 v0.34.3
[INFO] [stderr]   Downloaded minifb v0.19.2
[INFO] [stderr]   Downloaded wayland-protocols v0.27.0
[INFO] [stderr]   Downloaded wayland-client v0.27.0
[INFO] [stderr]   Downloaded wayland-cursor v0.27.0
[INFO] [stderr]   Downloaded wayland-sys v0.27.0
[INFO] [stderr]   Downloaded wayland-commons v0.27.0
[INFO] [stderr]   Downloaded sdl2-sys v0.34.3
[INFO] [stderr]   Downloaded orbclient v0.3.30
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bb4f8ebb5785bc33c524361deae79d0a9a62a236ea028c49b9ecd072f43c2f80
[INFO] running `Command { std: "docker" "start" "-a" "bb4f8ebb5785bc33c524361deae79d0a9a62a236ea028c49b9ecd072f43c2f80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bb4f8ebb5785bc33c524361deae79d0a9a62a236ea028c49b9ecd072f43c2f80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb4f8ebb5785bc33c524361deae79d0a9a62a236ea028c49b9ecd072f43c2f80", kill_on_drop: false }`
[INFO] [stdout] bb4f8ebb5785bc33c524361deae79d0a9a62a236ea028c49b9ecd072f43c2f80
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a68ef7a089d7b91c5efcf00cc1268877f8bcbd1d2bd7ef66eb0299a14eee720e
[INFO] running `Command { std: "docker" "start" "-a" "a68ef7a089d7b91c5efcf00cc1268877f8bcbd1d2bd7ef66eb0299a14eee720e", kill_on_drop: false }`
[INFO] [stderr]    Compiling ada v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 38 | #![feature(test)]
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ada` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "a68ef7a089d7b91c5efcf00cc1268877f8bcbd1d2bd7ef66eb0299a14eee720e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a68ef7a089d7b91c5efcf00cc1268877f8bcbd1d2bd7ef66eb0299a14eee720e", kill_on_drop: false }`
[INFO] [stdout] a68ef7a089d7b91c5efcf00cc1268877f8bcbd1d2bd7ef66eb0299a14eee720e