[INFO] cloning repository https://github.com/IsaacWoods/teensy_kbd
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/IsaacWoods/teensy_kbd" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIsaacWoods%2Fteensy_kbd", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIsaacWoods%2Fteensy_kbd'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c7fc064d791e54c2f45e2909b87e7eac250aa470
[INFO] testing IsaacWoods/teensy_kbd against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIsaacWoods%2Fteensy_kbd" "/workspace/builds/worker-110/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-110/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/IsaacWoods/teensy_kbd 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] removed /workspace/builds/worker-110/source/.cargo/config
[INFO] removed /workspace/builds/worker-110/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/IsaacWoods/teensy_kbd
[INFO] finished tweaking git repo https://github.com/IsaacWoods/teensy_kbd
[INFO] tweaked toml for git repo https://github.com/IsaacWoods/teensy_kbd written to /workspace/builds/worker-110/source/Cargo.toml
[INFO] crate git repo https://github.com/IsaacWoods/teensy_kbd 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-110/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/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] 3ea393a54b5b44e65f763ca95ccdb14d717dd033f0c508fc61042f5a581f85ee
[INFO] running `Command { std: "docker" "start" "-a" "3ea393a54b5b44e65f763ca95ccdb14d717dd033f0c508fc61042f5a581f85ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3ea393a54b5b44e65f763ca95ccdb14d717dd033f0c508fc61042f5a581f85ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ea393a54b5b44e65f763ca95ccdb14d717dd033f0c508fc61042f5a581f85ee", kill_on_drop: false }`
[INFO] [stdout] 3ea393a54b5b44e65f763ca95ccdb14d717dd033f0c508fc61042f5a581f85ee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/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] c3556af68def5720879365aa60c96b668d0b7c71f0573f613ca1dab539a4805c
[INFO] running `Command { std: "docker" "start" "-a" "c3556af68def5720879365aa60c96b668d0b7c71f0573f613ca1dab539a4805c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling volatile v0.2.4
[INFO] [stderr]    Compiling bit_field v0.9.0
[INFO] [stderr]    Compiling teensy_kbd v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/main.rs:3:29
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(lang_items, asm, const_fn, decl_macro)]
[INFO] [stdout]   |                             ^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the legacy LLVM-style asm! syntax is no longer supported
[INFO] [stdout]   --> src/watchdog.rs:32:13
[INFO] [stdout]    |
[INFO] [stdout] 32 |             asm!("nop; nop" : : : "memory");
[INFO] [stdout]    |             ----^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: replace with: `llvm_asm!`
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider migrating to the new asm! syntax specified in RFC 2873
[INFO] [stdout]    = note: alternatively, switch to llvm_asm! to keep your code working as it is
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(lang_items, asm, const_fn, decl_macro)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: language item required, but not found: `eh_personality`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:71:70
[INFO] [stdout]    |
[INFO] [stdout] 71 | pub static _VECTORS: [unsafe extern "C" fn() -> !; 2] = [_stack_top, main];
[INFO] [stdout]    |                                                                      ^^^^ expected fn pointer, found fn item
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected fn pointer `unsafe extern "C" fn() -> !`
[INFO] [stdout]                  found fn item `extern "C" fn() {main}`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0554, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `teensy_kbd` due to 6 previous errors
[INFO] running `Command { std: "docker" "inspect" "c3556af68def5720879365aa60c96b668d0b7c71f0573f613ca1dab539a4805c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3556af68def5720879365aa60c96b668d0b7c71f0573f613ca1dab539a4805c", kill_on_drop: false }`
[INFO] [stdout] c3556af68def5720879365aa60c96b668d0b7c71f0573f613ca1dab539a4805c