[INFO] cloning repository https://github.com/YuJuncen/tidc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/YuJuncen/tidc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYuJuncen%2Ftidc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYuJuncen%2Ftidc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0dd4a94a96973d93cb0d3098aea359ceba6b167a
[INFO] testing YuJuncen/tidc against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYuJuncen%2Ftidc" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/YuJuncen/tidc on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/YuJuncen/tidc
[INFO] finished tweaking git repo https://github.com/YuJuncen/tidc
[INFO] tweaked toml for git repo https://github.com/YuJuncen/tidc written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/YuJuncen/tidc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5e3f00431b6bb3bb94d7efad4bf74aecbd2be2f03629bf941299559208d4d480
[INFO] running `Command { std: "docker" "start" "-a" "5e3f00431b6bb3bb94d7efad4bf74aecbd2be2f03629bf941299559208d4d480", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5e3f00431b6bb3bb94d7efad4bf74aecbd2be2f03629bf941299559208d4d480", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e3f00431b6bb3bb94d7efad4bf74aecbd2be2f03629bf941299559208d4d480", kill_on_drop: false }`
[INFO] [stdout] 5e3f00431b6bb3bb94d7efad4bf74aecbd2be2f03629bf941299559208d4d480
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1b1b1e3729743c4c48a631bb01b255732f6b06bd9f89767d345549f37e79ce38
[INFO] running `Command { std: "docker" "start" "-a" "1b1b1e3729743c4c48a631bb01b255732f6b06bd9f89767d345549f37e79ce38", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]    Compiling quick-error v2.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling structopt-derive v0.4.15
[INFO] [stderr]    Compiling structopt v0.3.22
[INFO] [stderr]    Compiling tidc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/bin/tidc.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(never_type)]
[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 `tidc` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "1b1b1e3729743c4c48a631bb01b255732f6b06bd9f89767d345549f37e79ce38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b1b1e3729743c4c48a631bb01b255732f6b06bd9f89767d345549f37e79ce38", kill_on_drop: false }`
[INFO] [stdout] 1b1b1e3729743c4c48a631bb01b255732f6b06bd9f89767d345549f37e79ce38