[INFO] updating cached repository ChrisPWill/ExampleRustApi
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ChrisPWill/ExampleRustApi
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ChrisPWill/ExampleRustApi" "work/ex/beta-1.37-6/sources/1.36.0/gh/ChrisPWill/ExampleRustApi"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/ChrisPWill/ExampleRustApi'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ChrisPWill/ExampleRustApi" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ChrisPWill/ExampleRustApi"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ChrisPWill/ExampleRustApi'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 560d727a5b6a60c7658592a79f061b1aa0f119e4
[INFO] sha for GitHub repo ChrisPWill/ExampleRustApi: 560d727a5b6a60c7658592a79f061b1aa0f119e4
[INFO] validating manifest of ChrisPWill/ExampleRustApi on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ChrisPWill/ExampleRustApi on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ChrisPWill/ExampleRustApi
[INFO] finished frobbing ChrisPWill/ExampleRustApi
[INFO] frobbed toml for ChrisPWill/ExampleRustApi written to work/ex/beta-1.37-6/sources/1.36.0/gh/ChrisPWill/ExampleRustApi/Cargo.toml
[INFO] started frobbing ChrisPWill/ExampleRustApi
[INFO] finished frobbing ChrisPWill/ExampleRustApi
[INFO] frobbed toml for ChrisPWill/ExampleRustApi written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ChrisPWill/ExampleRustApi/Cargo.toml
[INFO] crate ChrisPWill/ExampleRustApi already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing ChrisPWill/ExampleRustApi against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/ChrisPWill/ExampleRustApi:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 0b868a478d27f76321d243174fb8e2953313a50cccd9e6cd6e7a629ad858cf07
[INFO] running `"docker" "start" "-a" "0b868a478d27f76321d243174fb8e2953313a50cccd9e6cd6e7a629ad858cf07"`
[INFO] [stderr]    Compiling serde v1.0.37
[INFO] [stderr]    Compiling state v0.4.0
[INFO] [stderr]    Compiling pear v0.0.15
[INFO] [stderr]    Compiling num_cpus v1.3.0
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]    Compiling time v0.1.36
[INFO] [stderr]    Compiling isatty v0.1.7
[INFO] [stderr]    Compiling memchr v1.0.1
[INFO] [stderr]    Compiling pear_codegen v0.0.15
[INFO] [stderr]    Compiling rocket v0.3.8
[INFO] [stderr]    Compiling rocket_codegen v0.3.8
[INFO] [stderr] error: failed to run custom build command for `pear_codegen v0.0.15`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/crater/target/debug/build/pear_codegen-5deb5ff136a8af54/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: 1.36.0 (2019-07-03). Minimum required: 1.27.0-nightly (2018-04-06).
[INFO] [stderr] thread 'main' panicked at 'Aborting compilation due to incompatible compiler.', /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/pear_codegen-0.0.15/build.rs:31:13
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x55a72e1c7883 - std::sys::unix::backtrace::tracing::imp::unwind_backtrace::h6485381528590a55
[INFO] [stderr]                                at src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:39
[INFO] [stderr]    1:     0x55a72e1c34bb - std::sys_common::backtrace::_print::h49a82ae9552e35c7
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:71
[INFO] [stderr]    2:     0x55a72e1c6716 - std::panicking::default_hook::{{closure}}::he20974adbefcc046
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:59
[INFO] [stderr]                                at src/libstd/panicking.rs:197
[INFO] [stderr]    3:     0x55a72e1c64a9 - std::panicking::default_hook::he4af6af4ac7fef7b
[INFO] [stderr]                                at src/libstd/panicking.rs:211
[INFO] [stderr]    4:     0x55a72e1c6d6f - std::panicking::rust_panic_with_hook::h057ff03eb4c8000f
[INFO] [stderr]                                at src/libstd/panicking.rs:474
[INFO] [stderr]    5:     0x55a72e19ac13 - std::panicking::begin_panic::h27f12ddfc0769103
[INFO] [stderr]                                at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/panicking.rs:408
[INFO] [stderr]    6:     0x55a72e198c9e - build_script_build::main::h07dff00d413071f1
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/pear_codegen-0.0.15/build.rs:31
[INFO] [stderr]    7:     0x55a72e19b5ff - std::rt::lang_start::{{closure}}::heb446c259e207e37
[INFO] [stderr]                                at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/rt.rs:64
[INFO] [stderr]    8:     0x55a72e1c67c2 - std::panicking::try::do_call::hc3d8373a0b215f51
[INFO] [stderr]                                at src/libstd/rt.rs:49
[INFO] [stderr]                                at src/libstd/panicking.rs:293
[INFO] [stderr]    9:     0x55a72e1cccb9 - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:85
[INFO] [stderr]   10:     0x55a72e1c727c - std::rt::lang_start_internal::he5218c8b95d395f2
[INFO] [stderr]                                at src/libstd/panicking.rs:272
[INFO] [stderr]                                at src/libstd/panic.rs:394
[INFO] [stderr]                                at src/libstd/rt.rs:48
[INFO] [stderr]   11:     0x55a72e19b5d8 - std::rt::lang_start::h9c15de2647c149b5
[INFO] [stderr]                                at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/rt.rs:64
[INFO] [stderr]   12:     0x55a72e199b09 - main
[INFO] [stderr]   13:     0x7fc5b80922e0 - __libc_start_main
[INFO] [stderr]   14:     0x55a72e1985f9 - _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" "0b868a478d27f76321d243174fb8e2953313a50cccd9e6cd6e7a629ad858cf07"`
[INFO] running `"docker" "rm" "-f" "0b868a478d27f76321d243174fb8e2953313a50cccd9e6cd6e7a629ad858cf07"`
[INFO] [stdout] 0b868a478d27f76321d243174fb8e2953313a50cccd9e6cd6e7a629ad858cf07