[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 try#18481b65f318e0b4b20c0fc61340054701719d6c for pr-62507 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62507/worker-3/try#18481b65f318e0b4b20c0fc61340054701719d6c:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/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" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] 1621abab3c1e0fab60e25bc9d832b77aee2f0ecb640602cdff0a010c9f821016 [INFO] running `"docker" "start" "-a" "1621abab3c1e0fab60e25bc9d832b77aee2f0ecb640602cdff0a010c9f821016"` [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-d6a568c3d1e40b1d/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: 0x5648e0e9a51b - backtrace::backtrace::libunwind::trace::hbfb69e72f505529b [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88 [INFO] [stderr] 1: 0x5648e0e9a51b - backtrace::backtrace::trace_unsynchronized::hac9ea77fa06b91bd [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x5648e0e9a51b - std::sys_common::backtrace::_print::hf6f722cabcf8c26d [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:47 [INFO] [stderr] 3: 0x5648e0e9a51b - std::sys_common::backtrace::print::h9cca5983945bdb52 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:36 [INFO] [stderr] 4: 0x5648e0e9a51b - std::panicking::default_hook::{{closure}}::h2fab7259edc3a80d [INFO] [stderr] at src/libstd/panicking.rs:200 [INFO] [stderr] 5: 0x5648e0e9a1f7 - std::panicking::default_hook::ha99acf6d9268d46d [INFO] [stderr] at src/libstd/panicking.rs:214 [INFO] [stderr] 6: 0x5648e0e9abe0 - std::panicking::rust_panic_with_hook::hddab2c65ce92e648 [INFO] [stderr] at src/libstd/panicking.rs:477 [INFO] [stderr] 7: 0x5648e0e9a762 - std::panicking::continue_panic_fmt::hfaaf28183fee9f60 [INFO] [stderr] at src/libstd/panicking.rs:384 [INFO] [stderr] 8: 0x5648e0e9a646 - rust_begin_unwind [INFO] [stderr] at src/libstd/panicking.rs:311 [INFO] [stderr] 9: 0x5648e0eb34cd - core::panicking::panic_fmt::hc776b72619f795d7 [INFO] [stderr] at src/libcore/panicking.rs:85 [INFO] [stderr] 10: 0x5648e0eb3537 - core::option::expect_failed::h00d83a456f83db06 [INFO] [stderr] at src/libcore/option.rs:1064 [INFO] [stderr] 11: 0x5648e0e6f94d - core::option::Option::expect::hb52e9a4b74e0c6aa [INFO] [stderr] at /rustc/18481b65f318e0b4b20c0fc61340054701719d6c/src/libcore/option.rs:340 [INFO] [stderr] 12: 0x5648e0e69b6b - build_script_build::main::h7dc10adb36671173 [INFO] [stderr] at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/core_collections-0.3.20170409/build.rs:48 [INFO] [stderr] 13: 0x5648e0e6c220 - std::rt::lang_start::{{closure}}::hebb18e7abae0fecb [INFO] [stderr] at /rustc/18481b65f318e0b4b20c0fc61340054701719d6c/src/libstd/rt.rs:64 [INFO] [stderr] 14: 0x5648e0e9a633 - std::rt::lang_start_internal::{{closure}}::hbec6d1ff7b00d029 [INFO] [stderr] at src/libstd/rt.rs:49 [INFO] [stderr] 15: 0x5648e0e9a633 - std::panicking::try::do_call::h83e51489f66cd002 [INFO] [stderr] at src/libstd/panicking.rs:296 [INFO] [stderr] 16: 0x5648e0ea0b9a - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:82 [INFO] [stderr] 17: 0x5648e0e9b0ed - std::panicking::try::hb1deae6a8854c8be [INFO] [stderr] at src/libstd/panicking.rs:275 [INFO] [stderr] 18: 0x5648e0e9b0ed - std::panic::catch_unwind::hff09c33b8b66b7a2 [INFO] [stderr] at src/libstd/panic.rs:394 [INFO] [stderr] 19: 0x5648e0e9b0ed - std::rt::lang_start_internal::h01b3f7988e3fe75d [INFO] [stderr] at src/libstd/rt.rs:48 [INFO] [stderr] 20: 0x5648e0e6c1f9 - std::rt::lang_start::he2b00b8464157c9e [INFO] [stderr] at /rustc/18481b65f318e0b4b20c0fc61340054701719d6c/src/libstd/rt.rs:64 [INFO] [stderr] 21: 0x5648e0e6a37a - main [INFO] [stderr] 22: 0x7fcf1fefb2e1 - __libc_start_main [INFO] [stderr] 23: 0x5648e0e6395a - _start [INFO] [stderr] 24: 0x0 - [INFO] [stderr] [INFO] running `"docker" "inspect" "1621abab3c1e0fab60e25bc9d832b77aee2f0ecb640602cdff0a010c9f821016"` [INFO] running `"docker" "rm" "-f" "1621abab3c1e0fab60e25bc9d832b77aee2f0ecb640602cdff0a010c9f821016"` [INFO] [stdout] 1621abab3c1e0fab60e25bc9d832b77aee2f0ecb640602cdff0a010c9f821016