[INFO] updating cached repository DiscordCraft/Arrayong [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/DiscordCraft/Arrayong [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/DiscordCraft/Arrayong" "work/ex/beta-1.38-1/sources/1.37.0/gh/DiscordCraft/Arrayong"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/DiscordCraft/Arrayong'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/DiscordCraft/Arrayong" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/DiscordCraft/Arrayong"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/DiscordCraft/Arrayong'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] abe6dc1f4c7585840ba4975b8f29bcdaf8ee9de3 [INFO] sha for GitHub repo DiscordCraft/Arrayong: abe6dc1f4c7585840ba4975b8f29bcdaf8ee9de3 [INFO] validating manifest of DiscordCraft/Arrayong on toolchain 1.37.0 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of DiscordCraft/Arrayong on toolchain beta-2019-08-13 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing DiscordCraft/Arrayong [INFO] finished frobbing DiscordCraft/Arrayong [INFO] frobbed toml for DiscordCraft/Arrayong written to work/ex/beta-1.38-1/sources/1.37.0/gh/DiscordCraft/Arrayong/Cargo.toml [INFO] started frobbing DiscordCraft/Arrayong [INFO] finished frobbing DiscordCraft/Arrayong [INFO] frobbed toml for DiscordCraft/Arrayong written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/DiscordCraft/Arrayong/Cargo.toml [INFO] crate DiscordCraft/Arrayong already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing DiscordCraft/Arrayong against beta-2019-08-13 for beta-1.38-1 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/DiscordCraft/Arrayong:/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=warn" "-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" "+beta-2019-08-13" "build" "--frozen"` [INFO] [stdout] 4b8ca457b063cc3d68eb4f2daa19eca8efa261be70c58d441eb10521d98e6ee2 [INFO] running `"docker" "start" "-a" "4b8ca457b063cc3d68eb4f2daa19eca8efa261be70c58d441eb10521d98e6ee2"` [INFO] [stderr] Compiling cc v1.0.4 [INFO] [stderr] Compiling openssl v0.9.23 [INFO] [stderr] Compiling num-traits v0.1.42 [INFO] [stderr] Compiling scoped-tls v0.1.0 [INFO] [stderr] Compiling smallvec v0.6.0 [INFO] [stderr] Compiling serde v1.0.27 [INFO] [stderr] Compiling regex-syntax v0.4.2 [INFO] [stderr] Compiling sublime_fuzzy v0.4.1 [INFO] [stderr] Compiling ordermap v0.3.5 [INFO] [stderr] Compiling rand v0.3.20 [INFO] [stderr] Compiling num_cpus v1.8.0 [INFO] [stderr] Compiling rand v0.4.2 [INFO] [stderr] Compiling time v0.1.39 [INFO] [stderr] Compiling memchr v2.0.1 [INFO] [stderr] Compiling tokio-service v0.1.0 [INFO] [stderr] Compiling relay v0.1.1 [INFO] [stderr] Compiling base64 v0.9.0 [INFO] [stderr] Compiling base64 v0.6.0 [INFO] [stderr] Compiling base64 v0.8.0 [INFO] [stderr] Compiling futures-cpupool v0.1.8 [INFO] [stderr] Compiling threadpool v1.7.1 [INFO] [stderr] Compiling num-integer v0.1.35 [INFO] [stderr] Compiling aho-corasick v0.6.4 [INFO] [stderr] Compiling parking_lot_core v0.2.10 [INFO] [stderr] Compiling uuid v0.5.1 [INFO] [stderr] Compiling unicase v1.4.2 [INFO] [stderr] Compiling unicase v2.1.0 [INFO] [stderr] Compiling tokio-io v0.1.4 [INFO] [stderr] Compiling mio v0.6.12 [INFO] [stderr] Compiling mime v0.2.6 [INFO] [stderr] Compiling url v1.6.0 [INFO] [stderr] Compiling num-iter v0.1.34 [INFO] [stderr] Compiling serde_derive_internals v0.19.0 [INFO] [stderr] Compiling openssl-sys v0.9.24 [INFO] [stderr] Compiling miniz-sys v0.1.10 [INFO] [stderr] Compiling regex v0.2.5 [INFO] [stderr] warning[E0713]: borrow may still be in use when destructor runs [INFO] [stderr] --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/url-1.6.0/src/form_urlencoded.rs:261:40 [INFO] [stderr] | [INFO] [stderr] 259 | impl<'a> Target for ::UrlQuery<'a> { [INFO] [stderr] | -- lifetime `'a` defined here [INFO] [stderr] 260 | fn as_mut_string(&mut self) -> &mut String { &mut self.url.serialization } [INFO] [stderr] 261 | fn finish(self) -> &'a mut ::Url { self.url } [INFO] [stderr] | ^^^^^^^^ - here, drop of `self` needs exclusive access to `*self.url`, because the type `UrlQuery<'_>` implements the `Drop` trait [INFO] [stderr] | | [INFO] [stderr] | returning this value requires that `*self.url` is borrowed for `'a` [INFO] [stderr] | [INFO] [stderr] = warning: this error has been downgraded to a warning for backwards compatibility with previous releases [INFO] [stderr] = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future [INFO] [stderr] = note: for more information, try `rustc --explain E0729` [INFO] [stderr] [INFO] [stderr] Compiling parking_lot v0.5.3 [INFO] [stderr] Compiling phf_shared v0.7.21 [INFO] [stderr] Compiling remove_dir_all v0.3.0 [INFO] [stderr] Compiling mime v0.3.5 [INFO] [stderr] Compiling num v0.1.41 [INFO] [stderr] Compiling libflate v0.1.14 [INFO] [stderr] Compiling tokio-core v0.1.12 [INFO] [stderr] Compiling hyper v0.10.13 [INFO] [stderr] Compiling phf_generator v0.7.21 [INFO] [stderr] Compiling phf v0.7.21 [INFO] [stderr] Compiling tempdir v0.3.6 [INFO] [stderr] Compiling phf_codegen v0.7.21 [INFO] [stderr] Compiling flate2 v1.0.1 [INFO] [stderr] Compiling serde_derive v1.0.27 [INFO] [stderr] Compiling mime_guess v1.8.3 [INFO] [stderr] Compiling mime_guess v2.0.0-alpha.3 [INFO] [stderr] Compiling tokio-proto v0.1.1 [INFO] [stderr] Compiling chrono v0.4.0 [INFO] [stderr] Compiling serde_json v1.0.9 [INFO] [stderr] Compiling serde_urlencoded v0.5.1 [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-246c9e17ca271dbb/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: 0x563d1b16a96b - backtrace::backtrace::libunwind::trace::h23ae608c8b906c69 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.34/src/backtrace/libunwind.rs:88 [INFO] [stderr] 1: 0x563d1b16a96b - backtrace::backtrace::trace_unsynchronized::h65b3ea295a85fd48 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.34/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x563d1b16a96b - std::sys_common::backtrace::_print::h24f527b44b6cfc06 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:47 [INFO] [stderr] 3: 0x563d1b16a96b - std::sys_common::backtrace::print::h712608e4347fd64a [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:36 [INFO] [stderr] 4: 0x563d1b16a96b - std::panicking::default_hook::{{closure}}::h6c3d570c2b500048 [INFO] [stderr] at src/libstd/panicking.rs:200 [INFO] [stderr] 5: 0x563d1b16a646 - std::panicking::default_hook::hb29963fb4747e0dd [INFO] [stderr] at src/libstd/panicking.rs:214 [INFO] [stderr] 6: 0x563d1b16b02d - std::panicking::rust_panic_with_hook::hd1236c3083de823a [INFO] [stderr] at src/libstd/panicking.rs:477 [INFO] [stderr] 7: 0x563d1b16abb2 - std::panicking::continue_panic_fmt::he38ad41d6304a12c [INFO] [stderr] at src/libstd/panicking.rs:384 [INFO] [stderr] 8: 0x563d1b16aa96 - rust_begin_unwind [INFO] [stderr] at src/libstd/panicking.rs:311 [INFO] [stderr] 9: 0x563d1b17f8ed - core::panicking::panic_fmt::h1bc6de43c92ad80c [INFO] [stderr] at src/libcore/panicking.rs:85 [INFO] [stderr] 10: 0x563d1b17f9e7 - core::result::unwrap_failed::hd83f272814becce6 [INFO] [stderr] at src/libcore/result.rs:1084 [INFO] [stderr] 11: 0x563d1b130c00 - core::result::Result::unwrap::h637b437dbb818257 [INFO] [stderr] at /rustc/e450539c2a8d7f791268d699cbe45ab3e57d43a1/src/libcore/result.rs:852 [INFO] [stderr] 12: 0x563d1b132ca5 - build_script_gen_mime_types::main::hd6c8200cef85ffc3 [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: 0x563d1b11d9d0 - std::rt::lang_start::{{closure}}::h503a2250e2e1a96d [INFO] [stderr] at /rustc/e450539c2a8d7f791268d699cbe45ab3e57d43a1/src/libstd/rt.rs:64 [INFO] [stderr] 14: 0x563d1b16aa83 - std::rt::lang_start_internal::{{closure}}::hf367a5a6ae52b0ce [INFO] [stderr] at src/libstd/rt.rs:49 [INFO] [stderr] 15: 0x563d1b16aa83 - std::panicking::try::do_call::h9d779bc5e27e3284 [INFO] [stderr] at src/libstd/panicking.rs:296 [INFO] [stderr] 16: 0x563d1b16cb7a - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:80 [INFO] [stderr] 17: 0x563d1b16b53d - std::panicking::try::h4af22d9cb0afa351 [INFO] [stderr] at src/libstd/panicking.rs:275 [INFO] [stderr] 18: 0x563d1b16b53d - std::panic::catch_unwind::hbb68a9ada87bfb97 [INFO] [stderr] at src/libstd/panic.rs:394 [INFO] [stderr] 19: 0x563d1b16b53d - std::rt::lang_start_internal::hba9e09d74440ce4d [INFO] [stderr] at src/libstd/rt.rs:48 [INFO] [stderr] 20: 0x563d1b11d9a9 - std::rt::lang_start::h35c19464ea6e7446 [INFO] [stderr] at /rustc/e450539c2a8d7f791268d699cbe45ab3e57d43a1/src/libstd/rt.rs:64 [INFO] [stderr] 21: 0x563d1b13422a - main [INFO] [stderr] 22: 0x7fec22d962e1 - __libc_start_main [INFO] [stderr] 23: 0x563d1b1093da - _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" "4b8ca457b063cc3d68eb4f2daa19eca8efa261be70c58d441eb10521d98e6ee2"` [INFO] running `"docker" "rm" "-f" "4b8ca457b063cc3d68eb4f2daa19eca8efa261be70c58d441eb10521d98e6ee2"` [INFO] [stdout] 4b8ca457b063cc3d68eb4f2daa19eca8efa261be70c58d441eb10521d98e6ee2