[INFO] cloning repository chaserx/upper_rust [INFO] running `"git" "clone" "--bare" "git://github.com/chaserx/upper_rust.git" "work/cache/sources/gh/chaserx/upper_rust"` [INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/chaserx/upper_rust'... [INFO] running `"git" "clone" "work/cache/sources/gh/chaserx/upper_rust" "work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/chaserx/upper_rust"` [INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/chaserx/upper_rust'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/chaserx/upper_rust" "work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/chaserx/upper_rust"` [INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/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#9f06855064ed06a50c496577b21ca50f92a2e67d [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of chaserx/upper_rust on toolchain try#d3301713b54af69ca9de941a8c6b0d8287dbd6df [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-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-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/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-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/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" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache lock [INFO] [stderr] Blocking waiting for file lock on package cache lock [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache lock [INFO] checking chaserx/upper_rust against master#9f06855064ed06a50c496577b21ca50f92a2e67d for pr-61874 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61874/worker-7/master#9f06855064ed06a50c496577b21ca50f92a2e67d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/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" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] 76b4e54390aa33c04531b34a6f57066ade385e8eff11023bbadf9e9fd377670b [INFO] running `"docker" "start" "-a" "76b4e54390aa33c04531b34a6f57066ade385e8eff11023bbadf9e9fd377670b"` [INFO] [stderr] Compiling rand v0.3.17 [INFO] [stderr] Checking serde_json v1.0.5 [INFO] [stderr] Checking futures-cpupool v0.1.7 [INFO] [stderr] Checking uuid v0.5.1 [INFO] [stderr] Checking tokio-io v0.1.3 [INFO] [stderr] Checking serde_urlencoded v0.5.1 [INFO] [stderr] Checking error-chain v0.10.0 [INFO] [stderr] Checking dotenv v0.10.1 [INFO] [stderr] Checking tokio-core v0.1.10 [INFO] [stderr] Compiling phf_generator v0.7.21 [INFO] [stderr] Checking tokio-proto v0.1.1 [INFO] [stderr] Checking tokio-tls v0.1.3 [INFO] [stderr] Compiling phf_codegen v0.7.21 [INFO] [stderr] Compiling mime_guess v2.0.0-alpha.2 [INFO] [stderr] Checking hyper v0.11.6 [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-f113bb1acb6f230d/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: 0x5564ce2cba3b - backtrace::backtrace::libunwind::trace::hc6a4966d389b62be [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88 [INFO] [stderr] 1: 0x5564ce2cba3b - backtrace::backtrace::trace_unsynchronized::h234cd6c2c95fa587 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x5564ce2cba3b - std::sys_common::backtrace::_print::h2896bece16680b31 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:47 [INFO] [stderr] 3: 0x5564ce2cba3b - std::sys_common::backtrace::print::h5f4d4b954705d426 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:36 [INFO] [stderr] 4: 0x5564ce2cba3b - std::panicking::default_hook::{{closure}}::h3d52949e2d73c1aa [INFO] [stderr] at src/libstd/panicking.rs:198 [INFO] [stderr] 5: 0x5564ce2cb73c - std::panicking::default_hook::h4b88c02cc00064f5 [INFO] [stderr] at src/libstd/panicking.rs:212 [INFO] [stderr] 6: 0x5564ce2cc100 - std::panicking::rust_panic_with_hook::he5596ad1952b7279 [INFO] [stderr] at src/libstd/panicking.rs:475 [INFO] [stderr] 7: 0x5564ce2cbc82 - std::panicking::continue_panic_fmt::h13f3a9aeaf0459c4 [INFO] [stderr] at src/libstd/panicking.rs:382 [INFO] [stderr] 8: 0x5564ce2cbb66 - rust_begin_unwind [INFO] [stderr] at src/libstd/panicking.rs:309 [INFO] [stderr] 9: 0x5564ce2e0cad - core::panicking::panic_fmt::h35cf1b39b1635ed5 [INFO] [stderr] at src/libcore/panicking.rs:85 [INFO] [stderr] 10: 0x5564ce2bf1c8 - core::result::unwrap_failed::h684e3a92c2b7e085 [INFO] [stderr] at /rustc/9f06855064ed06a50c496577b21ca50f92a2e67d/src/libcore/macros.rs:18 [INFO] [stderr] 11: 0x5564ce28b1ac - core::result::Result::unwrap::h3e99d8f159e8099c [INFO] [stderr] at /rustc/9f06855064ed06a50c496577b21ca50f92a2e67d/src/libcore/result.rs:800 [INFO] [stderr] 12: 0x5564ce2922d5 - build_script_gen_mime_types::main::h2ed013f156c507e7 [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: 0x5564ce2adef0 - std::rt::lang_start::{{closure}}::h72d5363c2b55d6ae [INFO] [stderr] at /rustc/9f06855064ed06a50c496577b21ca50f92a2e67d/src/libstd/rt.rs:64 [INFO] [stderr] 14: 0x5564ce2cbb53 - std::rt::lang_start_internal::{{closure}}::h97d240c87982728f [INFO] [stderr] at src/libstd/rt.rs:49 [INFO] [stderr] 15: 0x5564ce2cbb53 - std::panicking::try::do_call::h657ecdd23710c935 [INFO] [stderr] at src/libstd/panicking.rs:294 [INFO] [stderr] 16: 0x5564ce2cdefa - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:82 [INFO] [stderr] 17: 0x5564ce2cc60d - std::panicking::try::h52772d620cb80373 [INFO] [stderr] at src/libstd/panicking.rs:273 [INFO] [stderr] 18: 0x5564ce2cc60d - std::panic::catch_unwind::hac02eb84ea8f3a3e [INFO] [stderr] at src/libstd/panic.rs:388 [INFO] [stderr] 19: 0x5564ce2cc60d - std::rt::lang_start_internal::h9fab34d7c96dfdc9 [INFO] [stderr] at src/libstd/rt.rs:48 [INFO] [stderr] 20: 0x5564ce2adec9 - std::rt::lang_start::hae61bb480fade217 [INFO] [stderr] at /rustc/9f06855064ed06a50c496577b21ca50f92a2e67d/src/libstd/rt.rs:64 [INFO] [stderr] 21: 0x5564ce29391a - main [INFO] [stderr] 22: 0x7f27110c72e1 - __libc_start_main [INFO] [stderr] 23: 0x5564ce26b3ca - _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" "76b4e54390aa33c04531b34a6f57066ade385e8eff11023bbadf9e9fd377670b"` [INFO] running `"docker" "rm" "-f" "76b4e54390aa33c04531b34a6f57066ade385e8eff11023bbadf9e9fd377670b"` [INFO] [stdout] 76b4e54390aa33c04531b34a6f57066ade385e8eff11023bbadf9e9fd377670b