[INFO] cloning repository https://github.com/steveorsomethin/rust-ml
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/steveorsomethin/rust-ml" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsteveorsomethin%2Frust-ml", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsteveorsomethin%2Frust-ml'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 45220b6b329ccaa9fb6fd6837cddccb418b33cc0
[INFO] testing steveorsomethin/rust-ml against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsteveorsomethin%2Frust-ml" "/workspace/builds/worker-26/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-26/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/steveorsomethin/rust-ml on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/steveorsomethin/rust-ml
[INFO] finished tweaking git repo https://github.com/steveorsomethin/rust-ml
[INFO] tweaked toml for git repo https://github.com/steveorsomethin/rust-ml written to /workspace/builds/worker-26/source/Cargo.toml
[INFO] crate git repo https://github.com/steveorsomethin/rust-ml already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rand v0.3.11
[INFO] [stderr]   Downloaded winapi v0.2.2
[INFO] [stderr]   Downloaded libc v0.1.10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8233724c412a23af6979d6415a3c59a8208653f274c50bdcc3489ffbfee6b7f2
[INFO] running `Command { std: "docker" "start" "-a" "8233724c412a23af6979d6415a3c59a8208653f274c50bdcc3489ffbfee6b7f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8233724c412a23af6979d6415a3c59a8208653f274c50bdcc3489ffbfee6b7f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8233724c412a23af6979d6415a3c59a8208653f274c50bdcc3489ffbfee6b7f2", kill_on_drop: false }`
[INFO] [stdout] 8233724c412a23af6979d6415a3c59a8208653f274c50bdcc3489ffbfee6b7f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dac5b254b54d4e79ee3838ed2bc0de9eed8dd272fb49cd42f6cfc6e3319c1a97
[INFO] running `Command { std: "docker" "start" "-a" "dac5b254b54d4e79ee3838ed2bc0de9eed8dd272fb49cd42f6cfc6e3319c1a97", kill_on_drop: false }`
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling winapi v0.2.2
[INFO] [stderr]    Compiling libc v0.1.10
[INFO] [stderr]    Compiling advapi32-sys v0.1.2
[INFO] [stderr]    Compiling rand v0.3.11
[INFO] [stderr]    Compiling rust-ml v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/main.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | #![feature(convert)]
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `convert`
[INFO] [stdout]   --> src/main.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | #![feature(convert)]
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust-ml` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "dac5b254b54d4e79ee3838ed2bc0de9eed8dd272fb49cd42f6cfc6e3319c1a97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dac5b254b54d4e79ee3838ed2bc0de9eed8dd272fb49cd42f6cfc6e3319c1a97", kill_on_drop: false }`
[INFO] [stdout] dac5b254b54d4e79ee3838ed2bc0de9eed8dd272fb49cd42f6cfc6e3319c1a97