[INFO] updating cached repository Flat/megumin [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/Flat/megumin [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/Flat/megumin" "work/ex/beta-1.38-1/sources/1.37.0/gh/Flat/megumin"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Flat/megumin'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/Flat/megumin" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Flat/megumin"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Flat/megumin'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 3c0145d8ee6ffa133491b50f4a5665e528ddac05 [INFO] sha for GitHub repo Flat/megumin: 3c0145d8ee6ffa133491b50f4a5665e528ddac05 [INFO] validating manifest of Flat/megumin 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 Flat/megumin 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 Flat/megumin [INFO] finished frobbing Flat/megumin [INFO] frobbed toml for Flat/megumin written to work/ex/beta-1.38-1/sources/1.37.0/gh/Flat/megumin/Cargo.toml [INFO] started frobbing Flat/megumin [INFO] finished frobbing Flat/megumin [INFO] frobbed toml for Flat/megumin written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Flat/megumin/Cargo.toml [INFO] crate Flat/megumin 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] [stderr] Blocking waiting for file lock on package cache [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing Flat/megumin against 1.37.0 for beta-1.38-1 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Flat/megumin:/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" "+1.37.0" "build" "--frozen"` [INFO] [stdout] 273e6d365722c7eeb7b315423b588120fb5840142417ea4a077ad38bb0003333 [INFO] running `"docker" "start" "-a" "273e6d365722c7eeb7b315423b588120fb5840142417ea4a077ad38bb0003333"` [INFO] [stderr] Compiling version_check v0.1.2 [INFO] [stderr] Compiling gcc v0.3.51 [INFO] [stderr] Compiling openssl v0.9.13 [INFO] [stderr] Compiling num-traits v0.1.39 [INFO] [stderr] Compiling unicode-normalization v0.1.4 [INFO] [stderr] Compiling byteorder v1.0.0 [INFO] [stderr] Compiling percent-encoding v1.0.0 [INFO] [stderr] Compiling log v0.3.8 [INFO] [stderr] Compiling foreign-types v0.2.0 [INFO] [stderr] Compiling httparse v1.2.3 [INFO] [stderr] Compiling dtoa v0.4.1 [INFO] [stderr] Compiling serde v1.0.8 [INFO] [stderr] Compiling bitflags v0.8.2 [INFO] [stderr] Compiling serde v0.9.15 [INFO] [stderr] Compiling itoa v0.3.1 [INFO] [stderr] Compiling regex-syntax v0.4.1 [INFO] [stderr] Compiling unicode-bidi v0.3.3 [INFO] [stderr] Compiling num_cpus v1.5.1 [INFO] [stderr] Compiling thread-id v3.1.0 [INFO] [stderr] Compiling memchr v1.0.1 [INFO] [stderr] Compiling base64 v0.5.2 [INFO] [stderr] Compiling mime v0.2.6 [INFO] [stderr] Compiling unicase v1.4.2 [INFO] [stderr] Compiling app_dirs v1.1.1 [INFO] [stderr] Compiling tempdir v0.3.5 [INFO] [stderr] Compiling num-integer v0.1.34 [INFO] [stderr] Compiling aho-corasick v0.6.3 [INFO] [stderr] Compiling thread_local v0.3.3 [INFO] [stderr] Compiling openssl-sys v0.9.13 [INFO] [stderr] Compiling miniz-sys v0.1.9 [INFO] [stderr] Compiling serde_derive_internals v0.15.1 [INFO] [stderr] Compiling serde_codegen_internals v0.14.2 [INFO] [stderr] Compiling num-iter v0.1.33 [INFO] [stderr] Compiling idna v0.1.2 [INFO] [stderr] Compiling num v0.1.39 [INFO] [stderr] Compiling phf_shared v0.7.21 [INFO] [stderr] Compiling phf_generator v0.7.21 [INFO] [stderr] Compiling phf v0.7.21 [INFO] [stderr] Compiling flate2 v0.2.19 [INFO] [stderr] Compiling phf_codegen v0.7.21 [INFO] [stderr] Compiling mime_guess v1.8.1 [INFO] [stderr] Compiling serde_derive v0.9.15 [INFO] [stderr] Compiling serde_derive v1.0.8 [INFO] [stderr] Compiling url v1.5.0 [INFO] [stderr] Compiling regex v0.2.2 [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-1.5.0/src/form_urlencoded.rs:251:40 [INFO] [stderr] | [INFO] [stderr] 249 | impl<'a> Target for ::UrlQuery<'a> { [INFO] [stderr] | -- lifetime `'a` defined here [INFO] [stderr] 250 | fn as_mut_string(&mut self) -> &mut String { &mut self.url.serialization } [INFO] [stderr] 251 | 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] error: failed to run custom build command for `mime_guess v1.8.1` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `/opt/crater/target/debug/build/mime_guess-6c878fa7b6678617/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: 0x55f86c8d4e6b - backtrace::backtrace::libunwind::trace::hfe5db90796807973 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88 [INFO] [stderr] 1: 0x55f86c8d4e6b - backtrace::backtrace::trace_unsynchronized::h34b865a835594335 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x55f86c8d4e6b - std::sys_common::backtrace::_print::h527254ae44989167 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:47 [INFO] [stderr] 3: 0x55f86c8d4e6b - std::sys_common::backtrace::print::he85dd5ddddf46503 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:36 [INFO] [stderr] 4: 0x55f86c8d4e6b - std::panicking::default_hook::{{closure}}::h847a2eb38b396f14 [INFO] [stderr] at src/libstd/panicking.rs:200 [INFO] [stderr] 5: 0x55f86c8d4b47 - std::panicking::default_hook::h2ca0f9a30a0e206b [INFO] [stderr] at src/libstd/panicking.rs:214 [INFO] [stderr] 6: 0x55f86c8d5530 - std::panicking::rust_panic_with_hook::hffcefc09751839d1 [INFO] [stderr] at src/libstd/panicking.rs:477 [INFO] [stderr] 7: 0x55f86c8d50b2 - std::panicking::continue_panic_fmt::hc0f142c930c846fc [INFO] [stderr] at src/libstd/panicking.rs:384 [INFO] [stderr] 8: 0x55f86c8d4f96 - rust_begin_unwind [INFO] [stderr] at src/libstd/panicking.rs:311 [INFO] [stderr] 9: 0x55f86c8e9b4d - core::panicking::panic_fmt::h2daf88b2616ca2b2 [INFO] [stderr] at src/libcore/panicking.rs:85 [INFO] [stderr] 10: 0x55f86c8c80f8 - core::result::unwrap_failed::h9a8f7848aa10740a [INFO] [stderr] at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libcore/macros.rs:18 [INFO] [stderr] 11: 0x55f86c89500c - core::result::Result::unwrap::h006813b8cc39b8d2 [INFO] [stderr] at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libcore/result.rs:800 [INFO] [stderr] 12: 0x55f86c898265 - build_script_gen_mime_types::main::hcbf99052be9dddf3 [INFO] [stderr] at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/mime_guess-1.8.1/src/gen_mime_types.rs:22 [INFO] [stderr] 13: 0x55f86c8bea40 - std::rt::lang_start::{{closure}}::h82b919c2ef64d7ad [INFO] [stderr] at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libstd/rt.rs:64 [INFO] [stderr] 14: 0x55f86c8d4f83 - std::rt::lang_start_internal::{{closure}}::h447d8812e3ee306d [INFO] [stderr] at src/libstd/rt.rs:49 [INFO] [stderr] 15: 0x55f86c8d4f83 - std::panicking::try::do_call::h4a61cb372364c745 [INFO] [stderr] at src/libstd/panicking.rs:296 [INFO] [stderr] 16: 0x55f86c8d6d2a - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:82 [INFO] [stderr] 17: 0x55f86c8d5a3d - std::panicking::try::hdf71f938885bca42 [INFO] [stderr] at src/libstd/panicking.rs:275 [INFO] [stderr] 18: 0x55f86c8d5a3d - std::panic::catch_unwind::h7e85dbf162b1611a [INFO] [stderr] at src/libstd/panic.rs:394 [INFO] [stderr] 19: 0x55f86c8d5a3d - std::rt::lang_start_internal::h1e06cc26b9fc25ea [INFO] [stderr] at src/libstd/rt.rs:48 [INFO] [stderr] 20: 0x55f86c8bea19 - std::rt::lang_start::hae07d2f89575c49a [INFO] [stderr] at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libstd/rt.rs:64 [INFO] [stderr] 21: 0x55f86c89989a - main [INFO] [stderr] 22: 0x7f36086382e1 - __libc_start_main [INFO] [stderr] 23: 0x55f86c873c9a - _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" "273e6d365722c7eeb7b315423b588120fb5840142417ea4a077ad38bb0003333"` [INFO] running `"docker" "rm" "-f" "273e6d365722c7eeb7b315423b588120fb5840142417ea4a077ad38bb0003333"` [INFO] [stdout] 273e6d365722c7eeb7b315423b588120fb5840142417ea4a077ad38bb0003333