[INFO] crate hifive 0.2.0 is already in cache
[INFO] extracting crate hifive 0.2.0 into work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/reg/hifive/0.2.0
[INFO] extracting crate hifive 0.2.0 into work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/reg/hifive/0.2.0
[INFO] validating manifest of hifive-0.2.0 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 hifive-0.2.0 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 hifive-0.2.0
[INFO] finished frobbing hifive-0.2.0
[INFO] frobbed toml for hifive-0.2.0 written to work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/reg/hifive/0.2.0/Cargo.toml
[INFO] started frobbing hifive-0.2.0
[INFO] finished frobbing hifive-0.2.0
[INFO] frobbed toml for hifive-0.2.0 written to work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/reg/hifive/0.2.0/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] 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking hifive-0.2.0 against try#18481b65f318e0b4b20c0fc61340054701719d6c for pr-62507
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62507/worker-3/try#18481b65f318e0b4b20c0fc61340054701719d6c:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/reg/hifive/0.2.0:/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" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] fd91fe7a906f3fdfa5e1f87aa24436028d2103f6fd09c857e8d9efee8c4bcc89
[INFO] running `"docker" "start" "-a" "fd91fe7a906f3fdfa5e1f87aa24436028d2103f6fd09c857e8d9efee8c4bcc89"`
[INFO] [stderr]    Compiling riscv-rt v0.3.0
[INFO] [stderr]    Compiling e310x-hal v0.2.0
[INFO] [stderr]     Checking riscv v0.3.0
[INFO] [stderr] error[E0557]: feature has been removed
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/riscv-rt-0.3.0/src/lib.rs:169:12
[INFO] [stderr]     |
[INFO] [stderr] 169 | #![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/riscv-rt-0.3.0/src/lib.rs:169:12
[INFO] [stderr]     |
[INFO] [stderr] 169 | #![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/riscv-rt-0.3.0/src/lang_items.rs:6:3
[INFO] [stderr]   |
[INFO] [stderr] 6 | #[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 `riscv-rt`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "fd91fe7a906f3fdfa5e1f87aa24436028d2103f6fd09c857e8d9efee8c4bcc89"`
[INFO] running `"docker" "rm" "-f" "fd91fe7a906f3fdfa5e1f87aa24436028d2103f6fd09c857e8d9efee8c4bcc89"`
[INFO] [stdout] fd91fe7a906f3fdfa5e1f87aa24436028d2103f6fd09c857e8d9efee8c4bcc89