[INFO] cloning repository https://github.com/Garen-Wang/blog_os
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Garen-Wang/blog_os" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGaren-Wang%2Fblog_os", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGaren-Wang%2Fblog_os'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f7e3bad1b8bbad99b78c735d84c83f3bedc2fc90
[INFO] testing Garen-Wang/blog_os against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGaren-Wang%2Fblog_os" "/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/Garen-Wang/blog_os 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-1/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/Garen-Wang/blog_os
[INFO] removed 0 missing tests
[INFO] finished tweaking git repo https://github.com/Garen-Wang/blog_os
[INFO] tweaked toml for git repo https://github.com/Garen-Wang/blog_os written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/Garen-Wang/blog_os 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] 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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eb90ca52ad54f144d6ba7026e0880e02897bb4206e100dee7eade5014200cf11
[INFO] running `Command { std: "docker" "start" "-a" "eb90ca52ad54f144d6ba7026e0880e02897bb4206e100dee7eade5014200cf11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eb90ca52ad54f144d6ba7026e0880e02897bb4206e100dee7eade5014200cf11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb90ca52ad54f144d6ba7026e0880e02897bb4206e100dee7eade5014200cf11", kill_on_drop: false }`
[INFO] [stdout] eb90ca52ad54f144d6ba7026e0880e02897bb4206e100dee7eade5014200cf11
[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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4a07b7f172f803dbf948e1cba9d8ad732990f72e5c3d404ff9a5f459d91a6d60
[INFO] running `Command { std: "docker" "start" "-a" "4a07b7f172f803dbf948e1cba9d8ad732990f72e5c3d404ff9a5f459d91a6d60", kill_on_drop: false }`
[INFO] [stderr]    Compiling x86_64 v0.14.7
[INFO] [stderr]    Compiling bit_field v0.10.1
[INFO] [stderr]    Compiling futures-core v0.3.19
[INFO] [stderr]    Compiling futures-task v0.3.19
[INFO] [stderr]    Compiling volatile v0.4.4
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling bootloader v0.9.21
[INFO] [stderr]    Compiling futures-util v0.3.19
[INFO] [stderr]    Compiling conquer-util v0.2.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.8
[INFO] [stderr]    Compiling volatile v0.2.7
[INFO] [stderr]    Compiling pc-keyboard v0.5.1
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling lock_api v0.4.6
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling conquer-once v0.2.1
[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/lock_api-0.4.6/src/lib.rs:93:34
[INFO] [stdout]    |
[INFO] [stdout] 93 | #![cfg_attr(feature = "nightly", feature(const_fn_trait_bound))]
[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 `lock_api` 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" "4a07b7f172f803dbf948e1cba9d8ad732990f72e5c3d404ff9a5f459d91a6d60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a07b7f172f803dbf948e1cba9d8ad732990f72e5c3d404ff9a5f459d91a6d60", kill_on_drop: false }`
[INFO] [stdout] 4a07b7f172f803dbf948e1cba9d8ad732990f72e5c3d404ff9a5f459d91a6d60