[INFO] fetching crate doki-git 0.1.0...
[INFO] testing doki-git-0.1.0 against 1.59.0 for beta-1.60-1
[INFO] extracting crate doki-git 0.1.0 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate doki-git 0.1.0 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 doki-git 0.1.0
[INFO] finished tweaking crates.io crate doki-git 0.1.0
[INFO] tweaked toml for crates.io crate doki-git 0.1.0 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded jwalk v0.6.0
[INFO] [stderr]   Downloaded project-root v0.2.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] e4c1bdc56e8d883fe89459eaa1ae1280d76c9179e45e05407f3b468783bd0e2c
[INFO] running `Command { std: "docker" "start" "-a" "e4c1bdc56e8d883fe89459eaa1ae1280d76c9179e45e05407f3b468783bd0e2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e4c1bdc56e8d883fe89459eaa1ae1280d76c9179e45e05407f3b468783bd0e2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4c1bdc56e8d883fe89459eaa1ae1280d76c9179e45e05407f3b468783bd0e2c", kill_on_drop: false }`
[INFO] [stdout] e4c1bdc56e8d883fe89459eaa1ae1280d76c9179e45e05407f3b468783bd0e2c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 08a4945fa51d16a150792094903cbd1d339d7ad827af1224cf2713e29a9f9318
[INFO] running `Command { std: "docker" "start" "-a" "08a4945fa51d16a150792094903cbd1d339d7ad827af1224cf2713e29a9f9318", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.7
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.7
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling crossbeam-queue v0.3.4
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling openssl-probe v0.1.5
[INFO] [stderr]    Compiling pathdiff v0.2.1
[INFO] [stderr]    Compiling project-root v0.2.2
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling form_urlencoded v1.0.1
[INFO] [stderr]    Compiling unicode-normalization v0.1.19
[INFO] [stderr]    Compiling jobserver v0.1.24
[INFO] [stderr]    Compiling num_cpus v1.13.1
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling crossbeam-channel v0.5.2
[INFO] [stderr]    Compiling idna v0.2.3
[INFO] [stderr]    Compiling crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling openssl-sys v0.9.72
[INFO] [stderr]    Compiling libz-sys v1.1.3
[INFO] [stderr]    Compiling libssh2-sys v0.2.23
[INFO] [stderr]    Compiling libgit2-sys v0.12.26+1.3.0
[INFO] [stderr]    Compiling crossbeam v0.8.1
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling url v2.2.2
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling jwalk v0.6.0
[INFO] [stderr]    Compiling git2 v0.13.25
[INFO] [stderr]    Compiling doki-git 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(box_syntax)]
[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 `doki-git` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "08a4945fa51d16a150792094903cbd1d339d7ad827af1224cf2713e29a9f9318", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08a4945fa51d16a150792094903cbd1d339d7ad827af1224cf2713e29a9f9318", kill_on_drop: false }`
[INFO] [stdout] 08a4945fa51d16a150792094903cbd1d339d7ad827af1224cf2713e29a9f9318