Dec 02 22:57:13.819 INFO testing pear_codegen-0.1.2 against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 02 22:57:13.819 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-0/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/beta-1.31-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +8940af3cea4a9a9deabcaf843b2f8cad9a83fc61-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 02 22:57:14.095 INFO [stdout] 6d4ff3237d1295c5bb3b32a94066303819351b53412f63dbd3cbc3da764441bf
Dec 02 22:57:14.097 INFO running `"docker" "start" "-a" "6d4ff3237d1295c5bb3b32a94066303819351b53412f63dbd3cbc3da764441bf"`
Dec 02 22:57:15.096 INFO [stderr] usermod: no changes
Dec 02 22:57:15.146 INFO [stderr]    Compiling proc-macro2 v0.4.24
Dec 02 22:57:15.146 INFO [stderr]    Compiling pear_codegen v0.1.2 (/source)
Dec 02 22:57:16.572 INFO [stderr] error: failed to run custom build command for `pear_codegen v0.1.2 (/source)`
Dec 02 22:57:16.572 INFO [stderr] process didn't exit successfully: `/target/debug/build/pear_codegen-2cb0aa30249f39ba/build-script-build` (exit code: 101)
Dec 02 22:57:16.572 INFO [stderr] --- stderr
Dec 02 22:57:16.572 INFO [stderr] Error: Pear requires a nightly or dev version of Rust.
Dec 02 22:57:16.572 INFO [stderr] Installed version is: 1.31.0-beta.20 (2018-11-30). Minimum required: 1.31.0-nightly (2018-10-05).
Dec 02 22:57:16.572 INFO [stderr] thread 'main' panicked at 'Aborting compilation due to incompatible compiler.', build.rs:31:13
Dec 02 22:57:16.572 INFO [stderr] stack backtrace:
Dec 02 22:57:16.572 INFO [stderr]    0:     0x56544642a27f - std::sys::unix::backtrace::tracing::imp::unwind_backtrace::h3a8b83e1922cbdde
Dec 02 22:57:16.573 INFO [stderr]                                at libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
Dec 02 22:57:16.573 INFO [stderr]    1:     0x565446435c57 - std::sys_common::backtrace::print::h00d3155a29b4020f
Dec 02 22:57:16.573 INFO [stderr]                                at libstd/sys_common/backtrace.rs:71
Dec 02 22:57:16.573 INFO [stderr]                                at libstd/sys_common/backtrace.rs:59
Dec 02 22:57:16.573 INFO [stderr]    2:     0x56544642eb1f - std::panicking::default_hook::{{closure}}::hd7465c742e79e1bb
Dec 02 22:57:16.573 INFO [stderr]                                at libstd/panicking.rs:211
Dec 02 22:57:16.573 INFO [stderr]    3:     0x56544642e884 - std::panicking::default_hook::h9e3966f2aa2a6e12
Dec 02 22:57:16.573 INFO [stderr]                                at libstd/panicking.rs:227
Dec 02 22:57:16.573 INFO [stderr]    4:     0x56544642f14e - std::panicking::rust_panic_with_hook::h587f091ae747d080
Dec 02 22:57:16.573 INFO [stderr]                                at libstd/panicking.rs:476
Dec 02 22:57:16.573 INFO [stderr]    5:     0x565446400cb3 - std::panicking::begin_panic::h854af50467bbc7ee
Dec 02 22:57:16.573 INFO [stderr]                                at libstd/panicking.rs:410
Dec 02 22:57:16.573 INFO [stderr]    6:     0x5654463fed78 - build_script_build::main::ha4a7579a74959f66
Dec 02 22:57:16.573 INFO [stderr]                                at /source/build.rs:31
Dec 02 22:57:16.573 INFO [stderr]    7:     0x56544640159f - std::rt::lang_start::{{closure}}::h1167cd8d67ee2378
Dec 02 22:57:16.573 INFO [stderr]                                at libstd/rt.rs:74
Dec 02 22:57:16.573 INFO [stderr]    8:     0x56544642ebc2 - std::panicking::try::do_call::h52e7f80ff0fdcc45
Dec 02 22:57:16.573 INFO [stderr]                                at libstd/rt.rs:59
Dec 02 22:57:16.573 INFO [stderr]                                at libstd/panicking.rs:310
Dec 02 22:57:16.573 INFO [stderr]    9:     0x565446440c09 - __rust_maybe_catch_panic
Dec 02 22:57:16.573 INFO [stderr]                                at libpanic_unwind/lib.rs:102
Dec 02 22:57:16.573 INFO [stderr]   10:     0x56544641e8da - std::rt::lang_start_internal::h38cae898de7f805c
Dec 02 22:57:16.573 INFO [stderr]                                at libstd/panicking.rs:289
Dec 02 22:57:16.573 INFO [stderr]                                at libstd/panic.rs:392
Dec 02 22:57:16.573 INFO [stderr]                                at libstd/rt.rs:58
Dec 02 22:57:16.573 INFO [stderr]   11:     0x565446401578 - std::rt::lang_start::hb09296757326ed0a
Dec 02 22:57:16.573 INFO [stderr]                                at libstd/rt.rs:74
Dec 02 22:57:16.573 INFO [stderr]   12:     0x5654463ffc49 - main
Dec 02 22:57:16.573 INFO [stderr]   13:     0x7fd687a3982f - __libc_start_main
Dec 02 22:57:16.573 INFO [stderr]   14:     0x5654463fe658 - _start
Dec 02 22:57:16.573 INFO [stderr]   15:                0x0 - <unknown>
Dec 02 22:57:16.573 INFO [stderr] 
Dec 02 22:57:16.573 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 02 22:57:20.095 INFO [stderr] error: build failed
Dec 02 22:57:20.099 INFO [stderr] su: No module specific data is present
Dec 02 22:57:20.389 INFO running `"docker" "inspect" "6d4ff3237d1295c5bb3b32a94066303819351b53412f63dbd3cbc3da764441bf"`
Dec 02 22:57:20.533 INFO running `"docker" "rm" "-f" "6d4ff3237d1295c5bb3b32a94066303819351b53412f63dbd3cbc3da764441bf"`
Dec 02 22:57:20.639 INFO [stdout] 6d4ff3237d1295c5bb3b32a94066303819351b53412f63dbd3cbc3da764441bf