[INFO] updating cached repository Sparkmasterflex/ifkeith-rust [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/Sparkmasterflex/ifkeith-rust [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/Sparkmasterflex/ifkeith-rust" "work/ex/pr-62181/sources/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946/gh/Sparkmasterflex/ifkeith-rust"` [INFO] [stderr] Cloning into 'work/ex/pr-62181/sources/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946/gh/Sparkmasterflex/ifkeith-rust'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/Sparkmasterflex/ifkeith-rust" "work/ex/pr-62181/sources/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/gh/Sparkmasterflex/ifkeith-rust"` [INFO] [stderr] Cloning into 'work/ex/pr-62181/sources/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/gh/Sparkmasterflex/ifkeith-rust'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 02fec3534695433e628542f17c6cdc29756ebec7 [INFO] sha for GitHub repo Sparkmasterflex/ifkeith-rust: 02fec3534695433e628542f17c6cdc29756ebec7 [INFO] validating manifest of Sparkmasterflex/ifkeith-rust on toolchain master#6ea4036cd20a4b1ab1d56e555108c21735ff6946 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+6ea4036cd20a4b1ab1d56e555108c21735ff6946-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of Sparkmasterflex/ifkeith-rust on toolchain try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+003a7b6b5753e8509fdfe7949d4f0873ba71e4fc-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing Sparkmasterflex/ifkeith-rust [INFO] finished frobbing Sparkmasterflex/ifkeith-rust [INFO] frobbed toml for Sparkmasterflex/ifkeith-rust written to work/ex/pr-62181/sources/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946/gh/Sparkmasterflex/ifkeith-rust/Cargo.toml [INFO] started frobbing Sparkmasterflex/ifkeith-rust [INFO] finished frobbing Sparkmasterflex/ifkeith-rust [INFO] frobbed toml for Sparkmasterflex/ifkeith-rust written to work/ex/pr-62181/sources/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/gh/Sparkmasterflex/ifkeith-rust/Cargo.toml [INFO] crate Sparkmasterflex/ifkeith-rust already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+6ea4036cd20a4b1ab1d56e555108c21735ff6946-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+003a7b6b5753e8509fdfe7949d4f0873ba71e4fc-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking Sparkmasterflex/ifkeith-rust against try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc for pr-62181 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62181/worker-6/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62181/sources/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/gh/Sparkmasterflex/ifkeith-rust:/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" "+003a7b6b5753e8509fdfe7949d4f0873ba71e4fc-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] 4e1df62dee22d0d59965bdee847f97f38ce6ec94d5839d2d84bcf58468f41405 [INFO] running `"docker" "start" "-a" "4e1df62dee22d0d59965bdee847f97f38ce6ec94d5839d2d84bcf58468f41405"` [INFO] [stderr] Compiling mime_guess v1.8.3 [INFO] [stderr] error: failed to run custom build command for `mime_guess v1.8.3` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `/opt/crater/target/debug/build/mime_guess-98bd307e6c1af3c7/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:999:5 [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x564c0e634ccb - backtrace::backtrace::libunwind::trace::hc5a758871b6ebf05 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88 [INFO] [stderr] 1: 0x564c0e634ccb - backtrace::backtrace::trace_unsynchronized::hdad9729cc53c45f3 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x564c0e634ccb - std::sys_common::backtrace::_print::hccf66646430a9cbc [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:47 [INFO] [stderr] 3: 0x564c0e634ccb - std::sys_common::backtrace::print::h6c902507aa1c61bf [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:36 [INFO] [stderr] 4: 0x564c0e634ccb - std::panicking::default_hook::{{closure}}::hc0c79151a0a4b58f [INFO] [stderr] at src/libstd/panicking.rs:200 [INFO] [stderr] 5: 0x564c0e6349a7 - std::panicking::default_hook::hfd408bb664bf319a [INFO] [stderr] at src/libstd/panicking.rs:214 [INFO] [stderr] 6: 0x564c0e635390 - std::panicking::rust_panic_with_hook::hb2d4371b6afbe17a [INFO] [stderr] at src/libstd/panicking.rs:477 [INFO] [stderr] 7: 0x564c0e634f12 - std::panicking::continue_panic_fmt::h6eef1f2d6e3abc2b [INFO] [stderr] at src/libstd/panicking.rs:384 [INFO] [stderr] 8: 0x564c0e634df6 - rust_begin_unwind [INFO] [stderr] at src/libstd/panicking.rs:311 [INFO] [stderr] 9: 0x564c0e649afd - core::panicking::panic_fmt::h9f3781beea83a294 [INFO] [stderr] at src/libcore/panicking.rs:85 [INFO] [stderr] 10: 0x564c0e6253b8 - core::result::unwrap_failed::h718abd677a48d2f9 [INFO] [stderr] at /rustc/003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/src/libcore/macros.rs:18 [INFO] [stderr] 11: 0x564c0e5f58ac - core::result::Result::unwrap::hc4aa9881026af99d [INFO] [stderr] at /rustc/003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/src/libcore/result.rs:800 [INFO] [stderr] 12: 0x564c0e5f8aa5 - build_script_gen_mime_types::main::h7ed6aaf45c3f1238 [INFO] [stderr] at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/mime_guess-1.8.3/src/gen_mime_types.rs:22 [INFO] [stderr] 13: 0x564c0e61f200 - std::rt::lang_start::{{closure}}::h369d6d26395e1b2b [INFO] [stderr] at /rustc/003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/src/libstd/rt.rs:64 [INFO] [stderr] 14: 0x564c0e634de3 - std::rt::lang_start_internal::{{closure}}::h86569d7197572496 [INFO] [stderr] at src/libstd/rt.rs:49 [INFO] [stderr] 15: 0x564c0e634de3 - std::panicking::try::do_call::hc05ef3c0bbb0a2c9 [INFO] [stderr] at src/libstd/panicking.rs:296 [INFO] [stderr] 16: 0x564c0e636d2a - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:82 [INFO] [stderr] 17: 0x564c0e63589d - std::panicking::try::h5f7f6728fc93999f [INFO] [stderr] at src/libstd/panicking.rs:275 [INFO] [stderr] 18: 0x564c0e63589d - std::panic::catch_unwind::h9120cbd852b844f2 [INFO] [stderr] at src/libstd/panic.rs:388 [INFO] [stderr] 19: 0x564c0e63589d - std::rt::lang_start_internal::h20e51e71516fa081 [INFO] [stderr] at src/libstd/rt.rs:48 [INFO] [stderr] 20: 0x564c0e61f1d9 - std::rt::lang_start::h0abd25930186dca3 [INFO] [stderr] at /rustc/003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/src/libstd/rt.rs:64 [INFO] [stderr] 21: 0x564c0e5fa0da - main [INFO] [stderr] 22: 0x7f5a5f9fa2e1 - __libc_start_main [INFO] [stderr] 23: 0x564c0e5d44fa - _start [INFO] [stderr] 24: 0x0 - [INFO] [stderr] [INFO] running `"docker" "inspect" "4e1df62dee22d0d59965bdee847f97f38ce6ec94d5839d2d84bcf58468f41405"` [INFO] running `"docker" "rm" "-f" "4e1df62dee22d0d59965bdee847f97f38ce6ec94d5839d2d84bcf58468f41405"` [INFO] [stdout] 4e1df62dee22d0d59965bdee847f97f38ce6ec94d5839d2d84bcf58468f41405