[INFO] crate cortex-m-quickstart 0.3.4 is already in cache
[INFO] extracting crate cortex-m-quickstart 0.3.4 into work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/reg/cortex-m-quickstart/0.3.4
[INFO] extracting crate cortex-m-quickstart 0.3.4 into work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/reg/cortex-m-quickstart/0.3.4
[INFO] validating manifest of cortex-m-quickstart-0.3.4 on toolchain master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of cortex-m-quickstart-0.3.4 on toolchain try#18481b65f318e0b4b20c0fc61340054701719d6c
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing cortex-m-quickstart-0.3.4
[INFO] finished frobbing cortex-m-quickstart-0.3.4
[INFO] frobbed toml for cortex-m-quickstart-0.3.4 written to work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/reg/cortex-m-quickstart/0.3.4/Cargo.toml
[INFO] started frobbing cortex-m-quickstart-0.3.4
[INFO] finished frobbing cortex-m-quickstart-0.3.4
[INFO] frobbed toml for cortex-m-quickstart-0.3.4 written to work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/reg/cortex-m-quickstart/0.3.4/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking cortex-m-quickstart-0.3.4 against master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7 for pr-62507
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62507/worker-4/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/reg/cortex-m-quickstart/0.3.4:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] d13bc73d8afe74ed08c1d4f7b5aeef9385a11dcf6c7b081f6496d169a5f65732
[INFO] running `"docker" "start" "-a" "d13bc73d8afe74ed08c1d4f7b5aeef9385a11dcf6c7b081f6496d169a5f65732"`
[INFO] [stderr]    Compiling cortex-m-quickstart v0.3.4 (/opt/crater/workdir)
[INFO] [stderr]     Checking cortex-m-rt v0.5.7
[INFO] [stderr]     Checking panic-semihosting v0.3.0
[INFO] [stderr] error[E0557]: feature has been removed
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/panic-semihosting-0.3.0/src/lib.rs:59:12
[INFO] [stderr]    |
[INFO] [stderr] 59 | #![feature(panic_implementation)]
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: subsumed by `#[panic_handler]`
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/panic-semihosting-0.3.0/src/lib.rs:59:12
[INFO] [stderr]    |
[INFO] [stderr] 59 | #![feature(panic_implementation)]
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `panic_implementation` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/panic-semihosting-0.3.0/src/lib.rs:71:3
[INFO] [stderr]    |
[INFO] [stderr] 71 | #[panic_implementation]
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr]    = help: add #![feature(custom_attribute)] to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0557, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0557`.
[INFO] [stderr] error: Could not compile `panic-semihosting`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "d13bc73d8afe74ed08c1d4f7b5aeef9385a11dcf6c7b081f6496d169a5f65732"`
[INFO] running `"docker" "rm" "-f" "d13bc73d8afe74ed08c1d4f7b5aeef9385a11dcf6c7b081f6496d169a5f65732"`
[INFO] [stdout] d13bc73d8afe74ed08c1d4f7b5aeef9385a11dcf6c7b081f6496d169a5f65732