[INFO] updating cached repository Tyler-Zhang/words-with-coworkers-slack-bot [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/Tyler-Zhang/words-with-coworkers-slack-bot [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/Tyler-Zhang/words-with-coworkers-slack-bot" "work/ex/beta-1.37-6/sources/1.36.0/gh/Tyler-Zhang/words-with-coworkers-slack-bot"` [INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/Tyler-Zhang/words-with-coworkers-slack-bot'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/Tyler-Zhang/words-with-coworkers-slack-bot" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Tyler-Zhang/words-with-coworkers-slack-bot"` [INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Tyler-Zhang/words-with-coworkers-slack-bot'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 66e742f074e20a0f3be594af6eab15aaf11f922c [INFO] sha for GitHub repo Tyler-Zhang/words-with-coworkers-slack-bot: 66e742f074e20a0f3be594af6eab15aaf11f922c [INFO] validating manifest of Tyler-Zhang/words-with-coworkers-slack-bot 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 Tyler-Zhang/words-with-coworkers-slack-bot 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 Tyler-Zhang/words-with-coworkers-slack-bot [INFO] finished frobbing Tyler-Zhang/words-with-coworkers-slack-bot [INFO] frobbed toml for Tyler-Zhang/words-with-coworkers-slack-bot written to work/ex/beta-1.37-6/sources/1.36.0/gh/Tyler-Zhang/words-with-coworkers-slack-bot/Cargo.toml [INFO] started frobbing Tyler-Zhang/words-with-coworkers-slack-bot [INFO] finished frobbing Tyler-Zhang/words-with-coworkers-slack-bot [INFO] frobbed toml for Tyler-Zhang/words-with-coworkers-slack-bot written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Tyler-Zhang/words-with-coworkers-slack-bot/Cargo.toml [INFO] crate Tyler-Zhang/words-with-coworkers-slack-bot 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 Tyler-Zhang/words-with-coworkers-slack-bot 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-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/Tyler-Zhang/words-with-coworkers-slack-bot:/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] 7ae500bf1f7fd299aed8afb8a9b7b8fc774e455550dc3db30630d0a4ed3fffe8 [INFO] running `"docker" "start" "-a" "7ae500bf1f7fd299aed8afb8a9b7b8fc774e455550dc3db30630d0a4ed3fffe8"` [INFO] [stderr] Compiling serde v1.0.64 [INFO] [stderr] Compiling pq-sys v0.4.5 [INFO] [stderr] Compiling pear v0.0.17 [INFO] [stderr] Compiling smallvec v0.6.1 [INFO] [stderr] Compiling num_cpus v1.8.0 [INFO] [stderr] Compiling rand v0.4.2 [INFO] [stderr] Compiling memchr v2.0.1 [INFO] [stderr] Compiling time v0.1.40 [INFO] [stderr] Compiling isatty v0.1.8 [INFO] [stderr] Compiling proc-macro2 v0.4.4 [INFO] [stderr] Compiling pear_codegen v0.0.17 [INFO] [stderr] Compiling rocket v0.3.11 [INFO] [stderr] Compiling rocket_codegen v0.3.11 [INFO] [stderr] Compiling crossbeam-epoch v0.3.1 [INFO] [stderr] Compiling aho-corasick v0.6.4 [INFO] [stderr] Compiling r2d2 v0.8.2 [INFO] [stderr] Compiling mime v0.2.6 [INFO] [stderr] Compiling synstructure v0.6.1 [INFO] [stderr] Compiling auto_impl v0.2.0 [INFO] [stderr] Compiling backtrace-sys v0.1.23 [INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel [INFO] [stderr] --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/auto_impl-0.2.0/src/lib.rs:2:24 [INFO] [stderr] | [INFO] [stderr] 2 | #![cfg_attr(not(test), feature(proc_macro))] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: failed to run custom build command for `pear_codegen v0.0.17` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `/opt/crater/target/debug/build/pear_codegen-ea24dbb8c489e4f2/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 (2018-04-14). [INFO] [stderr] thread 'main' panicked at 'Aborting compilation due to incompatible compiler.', /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/pear_codegen-0.0.17/build.rs:31:13 [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x559081d62883 - 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: 0x559081d5e4bb - std::sys_common::backtrace::_print::h49a82ae9552e35c7 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:71 [INFO] [stderr] 2: 0x559081d61716 - 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: 0x559081d614a9 - std::panicking::default_hook::he4af6af4ac7fef7b [INFO] [stderr] at src/libstd/panicking.rs:211 [INFO] [stderr] 4: 0x559081d61d6f - std::panicking::rust_panic_with_hook::h057ff03eb4c8000f [INFO] [stderr] at src/libstd/panicking.rs:474 [INFO] [stderr] 5: 0x559081d35c13 - std::panicking::begin_panic::h403bbf45da5040b1 [INFO] [stderr] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/panicking.rs:408 [INFO] [stderr] 6: 0x559081d33c9e - build_script_build::main::h535b245c163c710f [INFO] [stderr] at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/pear_codegen-0.0.17/build.rs:31 [INFO] [stderr] 7: 0x559081d365ff - std::rt::lang_start::{{closure}}::h1606017367b582a7 [INFO] [stderr] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/rt.rs:64 [INFO] [stderr] 8: 0x559081d617c2 - 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: 0x559081d67cb9 - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:85 [INFO] [stderr] 10: 0x559081d6227c - 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: 0x559081d365d8 - std::rt::lang_start::hf316c1cac34dd1c5 [INFO] [stderr] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/rt.rs:64 [INFO] [stderr] 12: 0x559081d34b09 - main [INFO] [stderr] 13: 0x7f149b4d12e0 - __libc_start_main [INFO] [stderr] 14: 0x559081d335f9 - _start [INFO] [stderr] 15: 0x0 - [INFO] [stderr] [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: aborting due to previous error [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0554`. [INFO] [stderr] error: Could not compile `auto_impl`. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: build failed [INFO] running `"docker" "inspect" "7ae500bf1f7fd299aed8afb8a9b7b8fc774e455550dc3db30630d0a4ed3fffe8"` [INFO] running `"docker" "rm" "-f" "7ae500bf1f7fd299aed8afb8a9b7b8fc774e455550dc3db30630d0a4ed3fffe8"` [INFO] [stdout] 7ae500bf1f7fd299aed8afb8a9b7b8fc774e455550dc3db30630d0a4ed3fffe8