[INFO] crate pear 0.1.2 is already in cache
[INFO] extracting crate pear 0.1.2 into work/ex/pr-57483/sources/master#2bde39b8edce6463e1c37f8a8082a875e7b536b1/reg/pear/0.1.2
[INFO] extracting crate pear 0.1.2 into work/ex/pr-57483/sources/try#0d8b5d1f16bab9e975695518ff8705bdab9fe94c/reg/pear/0.1.2
[INFO] validating manifest of pear-0.1.2 on toolchain master#2bde39b8edce6463e1c37f8a8082a875e7b536b1
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+2bde39b8edce6463e1c37f8a8082a875e7b536b1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of pear-0.1.2 on toolchain try#0d8b5d1f16bab9e975695518ff8705bdab9fe94c
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0d8b5d1f16bab9e975695518ff8705bdab9fe94c-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing pear-0.1.2
[INFO] finished frobbing pear-0.1.2
[INFO] frobbed toml for pear-0.1.2 written to work/ex/pr-57483/sources/master#2bde39b8edce6463e1c37f8a8082a875e7b536b1/reg/pear/0.1.2/Cargo.toml
[INFO] started frobbing pear-0.1.2
[INFO] finished frobbing pear-0.1.2
[INFO] frobbed toml for pear-0.1.2 written to work/ex/pr-57483/sources/try#0d8b5d1f16bab9e975695518ff8705bdab9fe94c/reg/pear/0.1.2/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+2bde39b8edce6463e1c37f8a8082a875e7b536b1-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0d8b5d1f16bab9e975695518ff8705bdab9fe94c-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+2bde39b8edce6463e1c37f8a8082a875e7b536b1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0d8b5d1f16bab9e975695518ff8705bdab9fe94c-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking pear-0.1.2 against master#2bde39b8edce6463e1c37f8a8082a875e7b536b1 for pr-57483
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57483/worker-0/master#2bde39b8edce6463e1c37f8a8082a875e7b536b1:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57483/sources/master#2bde39b8edce6463e1c37f8a8082a875e7b536b1/reg/pear/0.1.2:/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" "+2bde39b8edce6463e1c37f8a8082a875e7b536b1-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 9396c5689debd2d33bd9b23b49a0ee8a0468125433d57943283cf8df3ebbffaf
[INFO] running `"docker" "start" "-a" "9396c5689debd2d33bd9b23b49a0ee8a0468125433d57943283cf8df3ebbffaf"`
[INFO] [stderr]    Compiling pear_codegen v0.1.2
[INFO] [stderr]    Compiling syn v0.15.24
[INFO] [stderr] error: failed to run custom build command for `pear_codegen v0.1.2`
[INFO] [stderr] process didn't exit successfully: `/opt/crater/target/debug/build/pear_codegen-c0bc12b699c46d7b/build-script-build` (exit code: 101)
[INFO] [stderr] --- stderr
[INFO] [stderr] Error: Pear requires a nightly or dev version of Rust.
[INFO] [stderr] Installed version is: 1.32.0-beta.12 (2019-01-05). Minimum required: 1.31.0-nightly (2018-10-05).
[INFO] [stderr] thread 'main' panicked at 'Aborting compilation due to incompatible compiler.', /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/pear_codegen-0.1.2/build.rs:31:13
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x55cb6a5e4853 - std::sys::unix::backtrace::tracing::imp::unwind_backtrace::ha8bcc96ae63a6114
[INFO] [stderr]                                at src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
[INFO] [stderr]    1:     0x55cb6a5df1e8 - std::sys_common::backtrace::_print::ha52ef9f34407cac8
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:71
[INFO] [stderr]    2:     0x55cb6a5e3912 - std::panicking::default_hook::{{closure}}::ha94a1dec142ead26
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:59
[INFO] [stderr]                                at src/libstd/panicking.rs:211
[INFO] [stderr]    3:     0x55cb6a5e367d - std::panicking::default_hook::h9a1bc7de45ed87b4
[INFO] [stderr]                                at src/libstd/panicking.rs:227
[INFO] [stderr]    4:     0x55cb6a5e3f70 - std::panicking::rust_panic_with_hook::h64b39a0177c46f97
[INFO] [stderr]                                at src/libstd/panicking.rs:491
[INFO] [stderr]    5:     0x55cb6a5b7183 - std::panicking::begin_panic::h1dae48dc72e87c13
[INFO] [stderr]                                at /rustc/2bde39b8edce6463e1c37f8a8082a875e7b536b1/src/libstd/panicking.rs:425
[INFO] [stderr]    6:     0x55cb6a5b519c - build_script_build::main::ha0333d7ae0d1dfce
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/pear_codegen-0.1.2/build.rs:31
[INFO] [stderr]    7:     0x55cb6a5b7a0f - std::rt::lang_start::{{closure}}::hd302d22065198db9
[INFO] [stderr]                                at /rustc/2bde39b8edce6463e1c37f8a8082a875e7b536b1/src/libstd/rt.rs:74
[INFO] [stderr]    8:     0x55cb6a5e39c2 - std::panicking::try::do_call::h1eb7f5d86c620835
[INFO] [stderr]                                at src/libstd/rt.rs:59
[INFO] [stderr]                                at src/libstd/panicking.rs:310
[INFO] [stderr]    9:     0x55cb6a5f5759 - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:102
[INFO] [stderr]   10:     0x55cb6a5e4343 - std::rt::lang_start_internal::h164adb93e937dc21
[INFO] [stderr]                                at src/libstd/panicking.rs:289
[INFO] [stderr]                                at src/libstd/panic.rs:398
[INFO] [stderr]                                at src/libstd/rt.rs:58
[INFO] [stderr]   11:     0x55cb6a5b79e8 - std::rt::lang_start::hfc3887cb9775c4dd
[INFO] [stderr]                                at /rustc/2bde39b8edce6463e1c37f8a8082a875e7b536b1/src/libstd/rt.rs:74
[INFO] [stderr]   12:     0x55cb6a5b6059 - main
[INFO] [stderr]   13:     0x7f6b2b6372e0 - __libc_start_main
[INFO] [stderr]   14:     0x55cb6a5b4a89 - _start
[INFO] [stderr]   15:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "9396c5689debd2d33bd9b23b49a0ee8a0468125433d57943283cf8df3ebbffaf"`
[INFO] running `"docker" "rm" "-f" "9396c5689debd2d33bd9b23b49a0ee8a0468125433d57943283cf8df3ebbffaf"`
[INFO] [stdout] 9396c5689debd2d33bd9b23b49a0ee8a0468125433d57943283cf8df3ebbffaf