[INFO] crate core_rustc-serialize 0.3.20-v0.3.19patch1 is already in cache [INFO] extracting crate core_rustc-serialize 0.3.20-v0.3.19patch1 into work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/reg/core_rustc-serialize/0.3.20-v0.3.19patch1 [INFO] extracting crate core_rustc-serialize 0.3.20-v0.3.19patch1 into work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/reg/core_rustc-serialize/0.3.20-v0.3.19patch1 [INFO] validating manifest of core_rustc-serialize-0.3.20-v0.3.19patch1 on toolchain master#c43d03a19f326f4a323569328cc501e86eb6d22e [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of core_rustc-serialize-0.3.20-v0.3.19patch1 on toolchain try#75eff020d0923c035c2fe220db4a0465cd847048 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing core_rustc-serialize-0.3.20-v0.3.19patch1 [INFO] finished frobbing core_rustc-serialize-0.3.20-v0.3.19patch1 [INFO] frobbed toml for core_rustc-serialize-0.3.20-v0.3.19patch1 written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/reg/core_rustc-serialize/0.3.20-v0.3.19patch1/Cargo.toml [INFO] started frobbing core_rustc-serialize-0.3.20-v0.3.19patch1 [INFO] finished frobbing core_rustc-serialize-0.3.20-v0.3.19patch1 [INFO] frobbed toml for core_rustc-serialize-0.3.20-v0.3.19patch1 written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/reg/core_rustc-serialize/0.3.20-v0.3.19patch1/Cargo.toml [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking core_rustc-serialize-0.3.20-v0.3.19patch1 against try#75eff020d0923c035c2fe220db4a0465cd847048 for pr-63565 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-3/try#75eff020d0923c035c2fe220db4a0465cd847048:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/reg/core_rustc-serialize/0.3.20-v0.3.19patch1:/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" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] e564804da03ad108b9cd2224d4a5f296ffdd5b40b65afb6aaa3cb1f764a976e8 [INFO] running `"docker" "start" "-a" "e564804da03ad108b9cd2224d4a5f296ffdd5b40b65afb6aaa3cb1f764a976e8"` [INFO] [stderr] Compiling core_collections v0.3.20170409 [INFO] [stderr] error: failed to run custom build command for `core_collections v0.3.20170409` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `/opt/crater/target/debug/build/core_collections-69e048dc5fa5eb6d/build-script-build` (exit code: 101) [INFO] [stderr] --- stderr [INFO] [stderr] thread 'main' panicked at 'Unknown compiler version, upgrade core_collections?', src/libcore/option.rs:1166:5 [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x562748d1ba7b - backtrace::backtrace::libunwind::trace::h223ecf9e25ea61ed [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.34/src/backtrace/libunwind.rs:88 [INFO] [stderr] 1: 0x562748d1ba7b - backtrace::backtrace::trace_unsynchronized::h19c402a6233e597e [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.34/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x562748d1ba7b - std::sys_common::backtrace::_print::h14947081e8315ba5 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:47 [INFO] [stderr] 3: 0x562748d1ba7b - std::sys_common::backtrace::print::h87cad3f0b50b59c5 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:36 [INFO] [stderr] 4: 0x562748d1ba7b - std::panicking::default_hook::{{closure}}::h497a714df189bd9d [INFO] [stderr] at src/libstd/panicking.rs:200 [INFO] [stderr] 5: 0x562748d1b756 - std::panicking::default_hook::h8dc4a117b759bd96 [INFO] [stderr] at src/libstd/panicking.rs:214 [INFO] [stderr] 6: 0x562748d1c13d - std::panicking::rust_panic_with_hook::h4cbf0f096b75f262 [INFO] [stderr] at src/libstd/panicking.rs:477 [INFO] [stderr] 7: 0x562748d1bcc2 - std::panicking::continue_panic_fmt::hbfbfc57925685348 [INFO] [stderr] at src/libstd/panicking.rs:384 [INFO] [stderr] 8: 0x562748d1bba6 - rust_begin_unwind [INFO] [stderr] at src/libstd/panicking.rs:311 [INFO] [stderr] 9: 0x562748d34aed - core::panicking::panic_fmt::h011c5c8794bf0cc5 [INFO] [stderr] at src/libcore/panicking.rs:85 [INFO] [stderr] 10: 0x562748d34b57 - core::option::expect_failed::hbe3520226fd88260 [INFO] [stderr] at src/libcore/option.rs:1166 [INFO] [stderr] 11: 0x562748cf0c7a - core::option::Option::expect::h69112757a026d968 [INFO] [stderr] at /rustc/75eff020d0923c035c2fe220db4a0465cd847048/src/libcore/option.rs:345 [INFO] [stderr] 12: 0x562748ceb5cd - build_script_build::main::h50d6b24a9991fc37 [INFO] [stderr] at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/core_collections-0.3.20170409/build.rs:48 [INFO] [stderr] 13: 0x562748ced530 - std::rt::lang_start::{{closure}}::h9aa4e21a2502302b [INFO] [stderr] at /rustc/75eff020d0923c035c2fe220db4a0465cd847048/src/libstd/rt.rs:64 [INFO] [stderr] 14: 0x562748d1bb93 - std::rt::lang_start_internal::{{closure}}::hb2a68345cd4d50f8 [INFO] [stderr] at src/libstd/rt.rs:49 [INFO] [stderr] 15: 0x562748d1bb93 - std::panicking::try::do_call::ha4d88255f4a68d08 [INFO] [stderr] at src/libstd/panicking.rs:296 [INFO] [stderr] 16: 0x562748d2217a - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:80 [INFO] [stderr] 17: 0x562748d1c64d - std::panicking::try::h6debac9988c5415d [INFO] [stderr] at src/libstd/panicking.rs:275 [INFO] [stderr] 18: 0x562748d1c64d - std::panic::catch_unwind::h4659dbf6316a9c8d [INFO] [stderr] at src/libstd/panic.rs:394 [INFO] [stderr] 19: 0x562748d1c64d - std::rt::lang_start_internal::hdadab8536edf34fe [INFO] [stderr] at src/libstd/rt.rs:48 [INFO] [stderr] 20: 0x562748ced509 - std::rt::lang_start::hb5b4de94c8970a98 [INFO] [stderr] at /rustc/75eff020d0923c035c2fe220db4a0465cd847048/src/libstd/rt.rs:64 [INFO] [stderr] 21: 0x562748cebdca - main [INFO] [stderr] 22: 0x7f85dd1c72e1 - __libc_start_main [INFO] [stderr] 23: 0x562748ce53ca - _start [INFO] [stderr] 24: 0x0 - [INFO] [stderr] [INFO] running `"docker" "inspect" "e564804da03ad108b9cd2224d4a5f296ffdd5b40b65afb6aaa3cb1f764a976e8"` [INFO] running `"docker" "rm" "-f" "e564804da03ad108b9cd2224d4a5f296ffdd5b40b65afb6aaa3cb1f764a976e8"` [INFO] [stdout] e564804da03ad108b9cd2224d4a5f296ffdd5b40b65afb6aaa3cb1f764a976e8