[INFO] fetching crate cortex-m-quickstart 0.3.4...
[INFO] testing cortex-m-quickstart-0.3.4 against 1.54.0 for beta-1.55-1
[INFO] extracting crate cortex-m-quickstart 0.3.4 into /workspace/builds/worker-51/source
[INFO] validating manifest of crates.io crate cortex-m-quickstart 0.3.4 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-51/source/.cargo/config
[INFO] started tweaking crates.io crate cortex-m-quickstart 0.3.4
[INFO] finished tweaking crates.io crate cortex-m-quickstart 0.3.4
[INFO] tweaked toml for crates.io crate cortex-m-quickstart 0.3.4 written to /workspace/builds/worker-51/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "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 cortex-m-rt v0.5.7
[INFO] [stderr]   Downloaded panic-semihosting v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9bf6bfa7bf09b22f10d62c7a3bafb5cdfbca7cd7d2bd442863475ce26536db68
[INFO] running `Command { std: "docker" "start" "-a" "9bf6bfa7bf09b22f10d62c7a3bafb5cdfbca7cd7d2bd442863475ce26536db68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9bf6bfa7bf09b22f10d62c7a3bafb5cdfbca7cd7d2bd442863475ce26536db68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9bf6bfa7bf09b22f10d62c7a3bafb5cdfbca7cd7d2bd442863475ce26536db68", kill_on_drop: false }`
[INFO] [stdout] 9bf6bfa7bf09b22f10d62c7a3bafb5cdfbca7cd7d2bd442863475ce26536db68
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e57acc6b76edd449e159bd721ea9e301c7d4d1b6199b463509479969b7a0ce54
[INFO] running `Command { std: "docker" "start" "-a" "e57acc6b76edd449e159bd721ea9e301c7d4d1b6199b463509479969b7a0ce54", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling cortex-m v0.7.3
[INFO] [stderr]    Compiling nb v1.0.0
[INFO] [stderr]    Compiling vcell v0.1.3
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling bitfield v0.13.2
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling cortex-m v0.6.7
[INFO] [stderr]    Compiling cortex-m-semihosting v0.3.7
[INFO] [stderr]    Compiling cortex-m-rt v0.6.15
[INFO] [stderr]    Compiling cortex-m v0.5.11
[INFO] [stderr]    Compiling r0 v0.2.2
[INFO] [stderr]    Compiling aligned v0.2.0
[INFO] [stderr]    Compiling cortex-m-quickstart v0.3.4 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling generic-array v0.13.3
[INFO] [stderr]    Compiling generic-array v0.12.4
[INFO] [stderr]    Compiling nb v0.1.3
[INFO] [stderr]    Compiling volatile-register v0.2.0
[INFO] [stderr]    Compiling as-slice v0.1.5
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling embedded-hal v0.2.6
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling aligned v0.3.5
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]    Compiling panic-semihosting v0.3.0
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/panic-semihosting-0.3.0/src/lib.rs:59:12
[INFO] [stdout]    |
[INFO] [stdout] 59 | #![feature(panic_implementation)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]    |
[INFO] [stdout]    = note: subsumed by `#[panic_handler]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `panic_implementation` in this scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/panic-semihosting-0.3.0/src/lib.rs:71:3
[INFO] [stdout]    |
[INFO] [stdout] 71 | #[panic_implementation]
[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/panic-semihosting-0.3.0/src/lib.rs:59:1
[INFO] [stdout]    |
[INFO] [stdout] 59 | #![feature(panic_implementation)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `panic-semihosting`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "e57acc6b76edd449e159bd721ea9e301c7d4d1b6199b463509479969b7a0ce54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e57acc6b76edd449e159bd721ea9e301c7d4d1b6199b463509479969b7a0ce54", kill_on_drop: false }`
[INFO] [stdout] e57acc6b76edd449e159bd721ea9e301c7d4d1b6199b463509479969b7a0ce54
