[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-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/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-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/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#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of core_rustc-serialize-0.3.20-v0.3.19patch1 on toolchain try#18481b65f318e0b4b20c0fc61340054701719d6c [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-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-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/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-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/reg/core_rustc-serialize/0.3.20-v0.3.19patch1/Cargo.toml [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking core_rustc-serialize-0.3.20-v0.3.19patch1 against master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7 for pr-62507 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62507/worker-6/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/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" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] d31feb93494ea390285390d62c42c8c9f7e47a2fcb56be01e1e4123e5c7e1dde [INFO] running `"docker" "start" "-a" "d31feb93494ea390285390d62c42c8c9f7e47a2fcb56be01e1e4123e5c7e1dde"` [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-33e688450c932b33/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:1064:5 [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x5594d8cbe51b - backtrace::backtrace::libunwind::trace::h4f04af92f39f2b78 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88 [INFO] [stderr] 1: 0x5594d8cbe51b - backtrace::backtrace::trace_unsynchronized::hb28ce8d2b7fb3e31 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x5594d8cbe51b - std::sys_common::backtrace::_print::he3f49d2d13a51ff1 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:47 [INFO] [stderr] 3: 0x5594d8cbe51b - std::sys_common::backtrace::print::h46c2f3b13519e9bf [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:36 [INFO] [stderr] 4: 0x5594d8cbe51b - std::panicking::default_hook::{{closure}}::h6694acddafc67583 [INFO] [stderr] at src/libstd/panicking.rs:200 [INFO] [stderr] 5: 0x5594d8cbe1f7 - std::panicking::default_hook::hb4761d2feeb6d93c [INFO] [stderr] at src/libstd/panicking.rs:214 [INFO] [stderr] 6: 0x5594d8cbebe0 - std::panicking::rust_panic_with_hook::h7a5f9620b0a832bc [INFO] [stderr] at src/libstd/panicking.rs:477 [INFO] [stderr] 7: 0x5594d8cbe762 - std::panicking::continue_panic_fmt::h76588b16c9674f9c [INFO] [stderr] at src/libstd/panicking.rs:384 [INFO] [stderr] 8: 0x5594d8cbe646 - rust_begin_unwind [INFO] [stderr] at src/libstd/panicking.rs:311 [INFO] [stderr] 9: 0x5594d8cd74cd - core::panicking::panic_fmt::hcce9be08ab68e123 [INFO] [stderr] at src/libcore/panicking.rs:85 [INFO] [stderr] 10: 0x5594d8cd7537 - core::option::expect_failed::h6d7d0b44f7cec010 [INFO] [stderr] at src/libcore/option.rs:1064 [INFO] [stderr] 11: 0x5594d8c9394d - core::option::Option::expect::h3662e24c96be24fd [INFO] [stderr] at /rustc/78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/src/libcore/option.rs:340 [INFO] [stderr] 12: 0x5594d8c8db6b - build_script_build::main::h51f82833b52da54f [INFO] [stderr] at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/core_collections-0.3.20170409/build.rs:48 [INFO] [stderr] 13: 0x5594d8c90220 - std::rt::lang_start::{{closure}}::hae600ccce349fce4 [INFO] [stderr] at /rustc/78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/src/libstd/rt.rs:64 [INFO] [stderr] 14: 0x5594d8cbe633 - std::rt::lang_start_internal::{{closure}}::h32e298b4b9152770 [INFO] [stderr] at src/libstd/rt.rs:49 [INFO] [stderr] 15: 0x5594d8cbe633 - std::panicking::try::do_call::hc8de7cda8a6a61da [INFO] [stderr] at src/libstd/panicking.rs:296 [INFO] [stderr] 16: 0x5594d8cc4b9a - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:82 [INFO] [stderr] 17: 0x5594d8cbf0ed - std::panicking::try::h2d3ab36572ae54da [INFO] [stderr] at src/libstd/panicking.rs:275 [INFO] [stderr] 18: 0x5594d8cbf0ed - std::panic::catch_unwind::h4b587439b0094333 [INFO] [stderr] at src/libstd/panic.rs:394 [INFO] [stderr] 19: 0x5594d8cbf0ed - std::rt::lang_start_internal::h0772ca1bc29dd619 [INFO] [stderr] at src/libstd/rt.rs:48 [INFO] [stderr] 20: 0x5594d8c901f9 - std::rt::lang_start::h8f1235db78b8675b [INFO] [stderr] at /rustc/78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/src/libstd/rt.rs:64 [INFO] [stderr] 21: 0x5594d8c8e37a - main [INFO] [stderr] 22: 0x7ff8283342e1 - __libc_start_main [INFO] [stderr] 23: 0x5594d8c8795a - _start [INFO] [stderr] 24: 0x0 - [INFO] [stderr] [INFO] running `"docker" "inspect" "d31feb93494ea390285390d62c42c8c9f7e47a2fcb56be01e1e4123e5c7e1dde"` [INFO] running `"docker" "rm" "-f" "d31feb93494ea390285390d62c42c8c9f7e47a2fcb56be01e1e4123e5c7e1dde"` [INFO] [stdout] d31feb93494ea390285390d62c42c8c9f7e47a2fcb56be01e1e4123e5c7e1dde