[INFO] updating cached repository 5830ification/rust-simple-ml [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/5830ification/rust-simple-ml [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/5830ification/rust-simple-ml" "work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/5830ification/rust-simple-ml"` [INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/5830ification/rust-simple-ml'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/5830ification/rust-simple-ml" "work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/5830ification/rust-simple-ml"` [INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/5830ification/rust-simple-ml'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] a05e04c91a7804be657965e4ca473e7597e7d5ff [INFO] sha for GitHub repo 5830ification/rust-simple-ml: a05e04c91a7804be657965e4ca473e7597e7d5ff [INFO] validating manifest of 5830ification/rust-simple-ml 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 5830ification/rust-simple-ml 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 5830ification/rust-simple-ml [INFO] finished frobbing 5830ification/rust-simple-ml [INFO] frobbed toml for 5830ification/rust-simple-ml written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/5830ification/rust-simple-ml/Cargo.toml [INFO] started frobbing 5830ification/rust-simple-ml [INFO] finished frobbing 5830ification/rust-simple-ml [INFO] frobbed toml for 5830ification/rust-simple-ml written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/5830ification/rust-simple-ml/Cargo.toml [INFO] crate 5830ification/rust-simple-ml already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking 5830ification/rust-simple-ml against master#c43d03a19f326f4a323569328cc501e86eb6d22e for pr-63565 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-2/master#c43d03a19f326f4a323569328cc501e86eb6d22e:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/5830ification/rust-simple-ml:/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" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] a434d49448bba1ad585b29f501fcd6ff42af7e759e636a2ddf19def222dab79c [INFO] running `"docker" "start" "-a" "a434d49448bba1ad585b29f501fcd6ff42af7e759e636a2ddf19def222dab79c"` [INFO] [stderr] Checking num-complex v0.1.40 [INFO] [stderr] Checking serde_json v1.0.5 [INFO] [stderr] Checking bincode v0.9.2 [INFO] [stderr] Checking futures-cpupool v0.1.7 [INFO] [stderr] Checking clap v2.27.1 [INFO] [stderr] Checking tokio-io v0.1.3 [INFO] [stderr] Checking serde_urlencoded v0.5.1 [INFO] [stderr] Checking native-tls v0.1.4 [INFO] [stderr] Compiling mime_guess v2.0.0-alpha.2 [INFO] [stderr] Checking alga v0.5.2 [INFO] [stderr] error: failed to run custom build command for `mime_guess v2.0.0-alpha.2` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `/opt/crater/target/debug/build/mime_guess-9d80a31d1eee0d09/build-script-gen_mime_types` (exit code: 101) [INFO] [stderr] --- stderr [INFO] [stderr] thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: Other, message: "Read-only file system" }', src/libcore/result.rs:1084:5 [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x55bb9a97893b - backtrace::backtrace::libunwind::trace::h99e6362fdb92a8eb [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.34/src/backtrace/libunwind.rs:88 [INFO] [stderr] 1: 0x55bb9a97893b - backtrace::backtrace::trace_unsynchronized::hb03857eb223d1e1b [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.34/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x55bb9a97893b - std::sys_common::backtrace::_print::hc504093b15dd6a49 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:47 [INFO] [stderr] 3: 0x55bb9a97893b - std::sys_common::backtrace::print::h74592d8df46164e6 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:36 [INFO] [stderr] 4: 0x55bb9a97893b - std::panicking::default_hook::{{closure}}::h148953d9747d04f4 [INFO] [stderr] at src/libstd/panicking.rs:200 [INFO] [stderr] 5: 0x55bb9a978616 - std::panicking::default_hook::h72a253311e200c7c [INFO] [stderr] at src/libstd/panicking.rs:214 [INFO] [stderr] 6: 0x55bb9a978ffd - std::panicking::rust_panic_with_hook::h625fcf59e672b6a0 [INFO] [stderr] at src/libstd/panicking.rs:477 [INFO] [stderr] 7: 0x55bb9a978b82 - std::panicking::continue_panic_fmt::hb865580971245aec [INFO] [stderr] at src/libstd/panicking.rs:384 [INFO] [stderr] 8: 0x55bb9a978a66 - rust_begin_unwind [INFO] [stderr] at src/libstd/panicking.rs:311 [INFO] [stderr] 9: 0x55bb9a98d8bd - core::panicking::panic_fmt::h88ab02319bb01bbf [INFO] [stderr] at src/libcore/panicking.rs:85 [INFO] [stderr] 10: 0x55bb9a98d9b7 - core::result::unwrap_failed::hcd16c30e39593715 [INFO] [stderr] at src/libcore/result.rs:1084 [INFO] [stderr] 11: 0x55bb9a93eb60 - core::result::Result::unwrap::h190b97f2ca902575 [INFO] [stderr] at /rustc/c43d03a19f326f4a323569328cc501e86eb6d22e/src/libcore/result.rs:852 [INFO] [stderr] 12: 0x55bb9a940c75 - build_script_gen_mime_types::main::h5963c0d75940a6c3 [INFO] [stderr] at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/mime_guess-2.0.0-alpha.2/src/gen_mime_types.rs:22 [INFO] [stderr] 13: 0x55bb9a92b9a0 - std::rt::lang_start::{{closure}}::h4e0203eb29f1801a [INFO] [stderr] at /rustc/c43d03a19f326f4a323569328cc501e86eb6d22e/src/libstd/rt.rs:64 [INFO] [stderr] 14: 0x55bb9a978a53 - std::rt::lang_start_internal::{{closure}}::h5b4ccd53e4167b89 [INFO] [stderr] at src/libstd/rt.rs:49 [INFO] [stderr] 15: 0x55bb9a978a53 - std::panicking::try::do_call::h85f9b79f07affa28 [INFO] [stderr] at src/libstd/panicking.rs:296 [INFO] [stderr] 16: 0x55bb9a97ab4a - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:80 [INFO] [stderr] 17: 0x55bb9a97950d - std::panicking::try::h0463127fe79abe73 [INFO] [stderr] at src/libstd/panicking.rs:275 [INFO] [stderr] 18: 0x55bb9a97950d - std::panic::catch_unwind::h846bfd7d9d99e56b [INFO] [stderr] at src/libstd/panic.rs:394 [INFO] [stderr] 19: 0x55bb9a97950d - std::rt::lang_start_internal::h0a72d627fb2e90ec [INFO] [stderr] at src/libstd/rt.rs:48 [INFO] [stderr] 20: 0x55bb9a92b979 - std::rt::lang_start::hbd150fcab11bb521 [INFO] [stderr] at /rustc/c43d03a19f326f4a323569328cc501e86eb6d22e/src/libstd/rt.rs:64 [INFO] [stderr] 21: 0x55bb9a9421fa - main [INFO] [stderr] 22: 0x7f63aa7e92e1 - __libc_start_main [INFO] [stderr] 23: 0x55bb9a9173aa - _start [INFO] [stderr] 24: 0x0 - [INFO] [stderr] [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: build failed [INFO] running `"docker" "inspect" "a434d49448bba1ad585b29f501fcd6ff42af7e759e636a2ddf19def222dab79c"` [INFO] running `"docker" "rm" "-f" "a434d49448bba1ad585b29f501fcd6ff42af7e759e636a2ddf19def222dab79c"` [INFO] [stdout] a434d49448bba1ad585b29f501fcd6ff42af7e759e636a2ddf19def222dab79c