[INFO] crate panic-itm 0.4.1 is already in cache
[INFO] extracting crate panic-itm 0.4.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/panic-itm/0.4.1
[INFO] extracting crate panic-itm 0.4.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/panic-itm/0.4.1
[INFO] validating manifest of panic-itm-0.4.1 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of panic-itm-0.4.1 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing panic-itm-0.4.1
[INFO] finished frobbing panic-itm-0.4.1
[INFO] frobbed toml for panic-itm-0.4.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/panic-itm/0.4.1/Cargo.toml
[INFO] started frobbing panic-itm-0.4.1
[INFO] finished frobbing panic-itm-0.4.1
[INFO] frobbed toml for panic-itm-0.4.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/panic-itm/0.4.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing panic-itm-0.4.1 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/panic-itm/0.4.1:/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=warn" "-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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 46981bd1a17b76a9a8da7014b346eda9f05e51ae3a584d06aa15d050498e8d51
[INFO] running `"docker" "start" "-a" "46981bd1a17b76a9a8da7014b346eda9f05e51ae3a584d06aa15d050498e8d51"`
[INFO] [stderr]    Compiling cortex-m v0.6.1
[INFO] [stderr]    Compiling vcell v0.1.0
[INFO] [stderr]    Compiling bare-metal v0.2.4
[INFO] [stderr]    Compiling aligned v0.3.1
[INFO] [stderr]    Compiling volatile-register v0.2.0
[INFO] [stderr]    Compiling panic-itm v0.4.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.25s
[INFO] running `"docker" "inspect" "46981bd1a17b76a9a8da7014b346eda9f05e51ae3a584d06aa15d050498e8d51"`
[INFO] running `"docker" "rm" "-f" "46981bd1a17b76a9a8da7014b346eda9f05e51ae3a584d06aa15d050498e8d51"`
[INFO] [stdout] 46981bd1a17b76a9a8da7014b346eda9f05e51ae3a584d06aa15d050498e8d51
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/panic-itm/0.4.1:/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=warn" "-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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] bf2fe581542a918b32a4a74659ed9aca6e6527cad274f5b09646a6c03a0ac56d
[INFO] running `"docker" "start" "-a" "bf2fe581542a918b32a4a74659ed9aca6e6527cad274f5b09646a6c03a0ac56d"`
[INFO] [stderr]    Compiling panic-itm v0.4.1 (/opt/crater/workdir)
[INFO] [stderr] error[E0152]: duplicate lang item found: `panic_impl`.
[INFO] [stderr]   --> src/lib.rs:45:1
[INFO] [stderr]    |
[INFO] [stderr] 45 | / fn panic(info: &PanicInfo) -> ! {
[INFO] [stderr] 46 | |     interrupt::disable();
[INFO] [stderr] 47 | |
[INFO] [stderr] 48 | |     let itm = unsafe { &mut *ITM::ptr() };
[INFO] [stderr] ...  |
[INFO] [stderr] 57 | |     }
[INFO] [stderr] 58 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: first defined in crate `std`.
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0152`.
[INFO] [stderr] error: Could not compile `panic-itm`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "bf2fe581542a918b32a4a74659ed9aca6e6527cad274f5b09646a6c03a0ac56d"`
[INFO] running `"docker" "rm" "-f" "bf2fe581542a918b32a4a74659ed9aca6e6527cad274f5b09646a6c03a0ac56d"`
[INFO] [stdout] bf2fe581542a918b32a4a74659ed9aca6e6527cad274f5b09646a6c03a0ac56d