[INFO] updating cached repository chaserx/upper_rust [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/chaserx/upper_rust [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/chaserx/upper_rust" "work/ex/pr-62181/sources/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946/gh/chaserx/upper_rust"` [INFO] [stderr] Cloning into 'work/ex/pr-62181/sources/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946/gh/chaserx/upper_rust'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/chaserx/upper_rust" "work/ex/pr-62181/sources/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/gh/chaserx/upper_rust"` [INFO] [stderr] Cloning into 'work/ex/pr-62181/sources/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/gh/chaserx/upper_rust'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 76d345551b0f61e9f5b657ec6f62731df47809a0 [INFO] sha for GitHub repo chaserx/upper_rust: 76d345551b0f61e9f5b657ec6f62731df47809a0 [INFO] validating manifest of chaserx/upper_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 chaserx/upper_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 chaserx/upper_rust [INFO] finished frobbing chaserx/upper_rust [INFO] frobbed toml for chaserx/upper_rust written to work/ex/pr-62181/sources/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946/gh/chaserx/upper_rust/Cargo.toml [INFO] started frobbing chaserx/upper_rust [INFO] finished frobbing chaserx/upper_rust [INFO] frobbed toml for chaserx/upper_rust written to work/ex/pr-62181/sources/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/gh/chaserx/upper_rust/Cargo.toml [INFO] crate chaserx/upper_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] [stderr] Blocking waiting for file lock on package cache [INFO] checking chaserx/upper_rust against master#6ea4036cd20a4b1ab1d56e555108c21735ff6946 for pr-62181 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62181/worker-5/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62181/sources/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946/gh/chaserx/upper_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" "+6ea4036cd20a4b1ab1d56e555108c21735ff6946-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] 74f6e8ab1ca34061d0b91fda358eacbf8931884cca75389266f3b5b7769702f7 [INFO] running `"docker" "start" "-a" "74f6e8ab1ca34061d0b91fda358eacbf8931884cca75389266f3b5b7769702f7"` [INFO] [stderr] Checking tokio-proto v0.1.1 [INFO] [stderr] Checking error-chain v0.10.0 [INFO] [stderr] Compiling mime_guess v2.0.0-alpha.2 [INFO] [stderr] Checking tokio-tls v0.1.3 [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-ddc5e8db3b1634a0/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: 0x55837348d18b - backtrace::backtrace::libunwind::trace::h399a7a5a1c92b2d8 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88 [INFO] [stderr] 1: 0x55837348d18b - backtrace::backtrace::trace_unsynchronized::h76e29b9231dd0873 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x55837348d18b - std::sys_common::backtrace::_print::hb092bf553e068953 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:47 [INFO] [stderr] 3: 0x55837348d18b - std::sys_common::backtrace::print::h3407b08071f3f520 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:36 [INFO] [stderr] 4: 0x55837348d18b - std::panicking::default_hook::{{closure}}::hc3b8cf51c83ab26e [INFO] [stderr] at src/libstd/panicking.rs:200 [INFO] [stderr] 5: 0x55837348ce67 - std::panicking::default_hook::h54ef93848f2476c8 [INFO] [stderr] at src/libstd/panicking.rs:214 [INFO] [stderr] 6: 0x55837348d850 - std::panicking::rust_panic_with_hook::hf0df85aa51810823 [INFO] [stderr] at src/libstd/panicking.rs:477 [INFO] [stderr] 7: 0x55837348d3d2 - std::panicking::continue_panic_fmt::hd822862a3dda0081 [INFO] [stderr] at src/libstd/panicking.rs:384 [INFO] [stderr] 8: 0x55837348d2b6 - rust_begin_unwind [INFO] [stderr] at src/libstd/panicking.rs:311 [INFO] [stderr] 9: 0x5583734a1fbd - core::panicking::panic_fmt::h569fafe348e0c6f0 [INFO] [stderr] at src/libcore/panicking.rs:85 [INFO] [stderr] 10: 0x5583734807f8 - core::result::unwrap_failed::h16d1cc47dee92788 [INFO] [stderr] at /rustc/6ea4036cd20a4b1ab1d56e555108c21735ff6946/src/libcore/macros.rs:18 [INFO] [stderr] 11: 0x55837344d42c - core::result::Result::unwrap::h7ae8b01551f622ff [INFO] [stderr] at /rustc/6ea4036cd20a4b1ab1d56e555108c21735ff6946/src/libcore/result.rs:800 [INFO] [stderr] 12: 0x558373450685 - build_script_gen_mime_types::main::h03c77971d7b470a8 [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: 0x558373476e60 - std::rt::lang_start::{{closure}}::h5d64a5f0b9884294 [INFO] [stderr] at /rustc/6ea4036cd20a4b1ab1d56e555108c21735ff6946/src/libstd/rt.rs:64 [INFO] [stderr] 14: 0x55837348d2a3 - std::rt::lang_start_internal::{{closure}}::he78638434283b545 [INFO] [stderr] at src/libstd/rt.rs:49 [INFO] [stderr] 15: 0x55837348d2a3 - std::panicking::try::do_call::h355c93ec0a462271 [INFO] [stderr] at src/libstd/panicking.rs:296 [INFO] [stderr] 16: 0x55837348f1ea - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:82 [INFO] [stderr] 17: 0x55837348dd5d - std::panicking::try::h3918ed6cf08237ff [INFO] [stderr] at src/libstd/panicking.rs:275 [INFO] [stderr] 18: 0x55837348dd5d - std::panic::catch_unwind::h8b2e693598ba7028 [INFO] [stderr] at src/libstd/panic.rs:388 [INFO] [stderr] 19: 0x55837348dd5d - std::rt::lang_start_internal::h78590588d24f24ba [INFO] [stderr] at src/libstd/rt.rs:48 [INFO] [stderr] 20: 0x558373476e39 - std::rt::lang_start::h545e7276782d2b10 [INFO] [stderr] at /rustc/6ea4036cd20a4b1ab1d56e555108c21735ff6946/src/libstd/rt.rs:64 [INFO] [stderr] 21: 0x558373451cba - main [INFO] [stderr] 22: 0x7fdaaef052e1 - __libc_start_main [INFO] [stderr] 23: 0x55837342c0ba - _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" "74f6e8ab1ca34061d0b91fda358eacbf8931884cca75389266f3b5b7769702f7"` [INFO] running `"docker" "rm" "-f" "74f6e8ab1ca34061d0b91fda358eacbf8931884cca75389266f3b5b7769702f7"` [INFO] [stdout] 74f6e8ab1ca34061d0b91fda358eacbf8931884cca75389266f3b5b7769702f7