[INFO] cloning repository https://github.com/WriterOfAlicrow/RustGrind
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/WriterOfAlicrow/RustGrind" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWriterOfAlicrow%2FRustGrind", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWriterOfAlicrow%2FRustGrind'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fcb399b4384ec3e878101f593bb72ee7a6182cf7
[INFO] testing WriterOfAlicrow/RustGrind against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWriterOfAlicrow%2FRustGrind" "/workspace/builds/worker-19/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-19/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/WriterOfAlicrow/RustGrind 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] removed /workspace/builds/worker-19/source/.cargo/config
[INFO] started tweaking git repo https://github.com/WriterOfAlicrow/RustGrind
[INFO] finished tweaking git repo https://github.com/WriterOfAlicrow/RustGrind
[INFO] tweaked toml for git repo https://github.com/WriterOfAlicrow/RustGrind written to /workspace/builds/worker-19/source/Cargo.toml
[INFO] crate git repo https://github.com/WriterOfAlicrow/RustGrind 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 stepper v0.5.0
[INFO] [stderr]   Downloaded replace_with v0.1.7
[INFO] [stderr]   Downloaded gpio-cdev v0.3.0
[INFO] [stderr]   Downloaded gpio-cdev v0.4.0
[INFO] [stderr]   Downloaded embedded-hal v1.0.0-alpha.4
[INFO] [stderr]   Downloaded fixed-sqrt v0.2.4
[INFO] [stderr]   Downloaded nix v0.22.1
[INFO] [stderr]   Downloaded sysfs_gpio v0.5.4
[INFO] [stderr]   Downloaded fixed v1.9.0
[INFO] [stderr]   Downloaded spidev v0.4.1
[INFO] [stderr]   Downloaded i2cdev v0.4.4
[INFO] [stderr]   Downloaded linux-embedded-hal v0.4.0-alpha.0
[INFO] [stderr]   Downloaded ramp-maker v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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] f96015efd406a6d747c6cf3d5a967914ae71774ec004dd8ebed9deb9db609469
[INFO] running `Command { std: "docker" "start" "-a" "f96015efd406a6d747c6cf3d5a967914ae71774ec004dd8ebed9deb9db609469", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f96015efd406a6d747c6cf3d5a967914ae71774ec004dd8ebed9deb9db609469", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f96015efd406a6d747c6cf3d5a967914ae71774ec004dd8ebed9deb9db609469", kill_on_drop: false }`
[INFO] [stdout] f96015efd406a6d747c6cf3d5a967914ae71774ec004dd8ebed9deb9db609469
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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] 72237c5e9287252fbb35fa198f756cd6ecc95918e51138de5dbe5ce1ceee1198
[INFO] running `Command { std: "docker" "start" "-a" "72237c5e9287252fbb35fa198f756cd6ecc95918e51138de5dbe5ce1ceee1198", 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]    Compiling libc v0.2.99
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling cc v1.0.69
[INFO] [stderr]    Compiling httparse v1.4.1
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling az v1.1.1
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling gimli v0.25.0
[INFO] [stderr]    Compiling cpufeatures v0.1.5
[INFO] [stderr]    Compiling fixed v1.9.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.20
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling bytemuck v1.7.2
[INFO] [stderr]    Compiling slab v0.4.3
[INFO] [stderr]    Compiling half v1.7.1
[INFO] [stderr]    Compiling state v0.4.2
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]    Compiling serde_json v1.0.66
[INFO] [stderr]    Compiling nb v1.0.0
[INFO] [stderr]    Compiling dtoa v0.4.8
[INFO] [stderr]    Compiling replace_with v0.1.7
[INFO] [stderr]    Compiling strum v0.21.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling tinyvec v1.3.1
[INFO] [stderr]    Compiling pear_codegen v0.1.4
[INFO] [stderr]    Compiling unicode-bidi v0.3.5
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling base64 v0.9.3
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling rocket_codegen v0.4.10
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling rocket v0.4.10
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling thread_local v1.1.3
[INFO] [stderr]    Compiling yaml-rust v0.4.5
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling cipher v0.2.5
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling universal-hash v0.4.1
[INFO] [stderr]    Compiling crypto-mac v0.10.1
[INFO] [stderr]    Compiling block-buffer v0.9.0
[INFO] [stderr]    Compiling aead v0.3.2
[INFO] [stderr]    Compiling devise_core v0.2.0
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]    Compiling embedded-hal v1.0.0-alpha.4
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/devise_core-0.2.0/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_diagnostic, proc_macro_span)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/devise_core-0.2.0/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(crate_visibility_modifier)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/devise_core-0.2.0/src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(concat_idents)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling mime v0.2.6
[INFO] [stderr]    Compiling sha2 v0.9.5
[INFO] [stderr]    Compiling aes-soft v0.6.4
[INFO] [stderr]    Compiling polyval v0.4.5
[INFO] [stderr]    Compiling ctr v0.6.0
[INFO] [stderr]    Compiling hmac v0.10.1
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `devise_core` due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "72237c5e9287252fbb35fa198f756cd6ecc95918e51138de5dbe5ce1ceee1198", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72237c5e9287252fbb35fa198f756cd6ecc95918e51138de5dbe5ce1ceee1198", kill_on_drop: false }`
[INFO] [stdout] 72237c5e9287252fbb35fa198f756cd6ecc95918e51138de5dbe5ce1ceee1198