[INFO] updating cached repository coder543/u [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/coder543/u [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/coder543/u" "work/ex/beta-1.38-1/sources/1.37.0/gh/coder543/u"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/coder543/u'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/coder543/u" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/coder543/u"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/coder543/u'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 8c72018fb7743abe42976845be7c8919eac21380 [INFO] sha for GitHub repo coder543/u: 8c72018fb7743abe42976845be7c8919eac21380 [INFO] validating manifest of coder543/u 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 coder543/u 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 coder543/u [INFO] finished frobbing coder543/u [INFO] frobbed toml for coder543/u written to work/ex/beta-1.38-1/sources/1.37.0/gh/coder543/u/Cargo.toml [INFO] started frobbing coder543/u [INFO] finished frobbing coder543/u [INFO] frobbed toml for coder543/u written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/coder543/u/Cargo.toml [INFO] crate coder543/u 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 coder543/u 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-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/coder543/u:/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] 9a13d8a08d785c518a8ac4ca76bba89687595abf05cdb9ae637ceed11fe25f6c [INFO] running `"docker" "start" "-a" "9a13d8a08d785c518a8ac4ca76bba89687595abf05cdb9ae637ceed11fe25f6c"` [INFO] [stderr] Compiling futures v0.1.17 [INFO] [stderr] Compiling crc-core v0.1.0 [INFO] [stderr] Compiling serde v1.0.19 [INFO] [stderr] Compiling u v0.1.0 (/opt/crater/workdir) [INFO] [stderr] Compiling iovec v0.1.1 [INFO] [stderr] Compiling openssl-sys v0.9.20 [INFO] [stderr] Compiling net2 v0.2.31 [INFO] [stderr] Compiling uuid v0.5.1 [INFO] [stderr] Compiling crc v1.5.0 [INFO] [stderr] Compiling url v1.6.0 [INFO] [stderr] Compiling bytes v0.4.5 [INFO] [stderr] Compiling phf_generator v0.7.21 [INFO] [stderr] Compiling mime v0.3.5 [INFO] [stderr] Compiling mio v0.6.11 [INFO] [stderr] Compiling phf_codegen v0.7.21 [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 libflate v0.1.12 [INFO] [stderr] Compiling mime_guess v2.0.0-alpha.2 [INFO] [stderr] Compiling openssl v0.9.20 [INFO] [stderr] Compiling tokio-io v0.1.4 [INFO] [stderr] Compiling tokio-service v0.1.0 [INFO] [stderr] Compiling futures-cpupool v0.1.7 [INFO] [stderr] Compiling relay v0.1.0 [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-7e2501efd5b149f4/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: 0x55a65687a36b - 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: 0x55a65687a36b - 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: 0x55a65687a36b - std::sys_common::backtrace::_print::h527254ae44989167 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:47 [INFO] [stderr] 3: 0x55a65687a36b - std::sys_common::backtrace::print::he85dd5ddddf46503 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:36 [INFO] [stderr] 4: 0x55a65687a36b - std::panicking::default_hook::{{closure}}::h847a2eb38b396f14 [INFO] [stderr] at src/libstd/panicking.rs:200 [INFO] [stderr] 5: 0x55a65687a047 - std::panicking::default_hook::h2ca0f9a30a0e206b [INFO] [stderr] at src/libstd/panicking.rs:214 [INFO] [stderr] 6: 0x55a65687aa30 - std::panicking::rust_panic_with_hook::hffcefc09751839d1 [INFO] [stderr] at src/libstd/panicking.rs:477 [INFO] [stderr] 7: 0x55a65687a5b2 - std::panicking::continue_panic_fmt::hc0f142c930c846fc [INFO] [stderr] at src/libstd/panicking.rs:384 [INFO] [stderr] 8: 0x55a65687a496 - rust_begin_unwind [INFO] [stderr] at src/libstd/panicking.rs:311 [INFO] [stderr] 9: 0x55a65688f04d - core::panicking::panic_fmt::h2daf88b2616ca2b2 [INFO] [stderr] at src/libcore/panicking.rs:85 [INFO] [stderr] 10: 0x55a65686cd38 - core::result::unwrap_failed::hc68f0a894325e34f [INFO] [stderr] at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libcore/macros.rs:18 [INFO] [stderr] 11: 0x55a65683a42c - core::result::Result::unwrap::h00dcd7e310ccf4f7 [INFO] [stderr] at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libcore/result.rs:800 [INFO] [stderr] 12: 0x55a65683d685 - build_script_gen_mime_types::main::hf68072dca58b2969 [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: 0x55a656863e60 - std::rt::lang_start::{{closure}}::hebc26f5669f005d2 [INFO] [stderr] at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libstd/rt.rs:64 [INFO] [stderr] 14: 0x55a65687a483 - std::rt::lang_start_internal::{{closure}}::h447d8812e3ee306d [INFO] [stderr] at src/libstd/rt.rs:49 [INFO] [stderr] 15: 0x55a65687a483 - std::panicking::try::do_call::h4a61cb372364c745 [INFO] [stderr] at src/libstd/panicking.rs:296 [INFO] [stderr] 16: 0x55a65687c22a - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:82 [INFO] [stderr] 17: 0x55a65687af3d - std::panicking::try::hdf71f938885bca42 [INFO] [stderr] at src/libstd/panicking.rs:275 [INFO] [stderr] 18: 0x55a65687af3d - std::panic::catch_unwind::h7e85dbf162b1611a [INFO] [stderr] at src/libstd/panic.rs:394 [INFO] [stderr] 19: 0x55a65687af3d - std::rt::lang_start_internal::h1e06cc26b9fc25ea [INFO] [stderr] at src/libstd/rt.rs:48 [INFO] [stderr] 20: 0x55a656863e39 - std::rt::lang_start::he59045df9c62dde4 [INFO] [stderr] at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libstd/rt.rs:64 [INFO] [stderr] 21: 0x55a65683ecba - main [INFO] [stderr] 22: 0x7f09c95d62e1 - __libc_start_main [INFO] [stderr] 23: 0x55a6568190ba - _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" "9a13d8a08d785c518a8ac4ca76bba89687595abf05cdb9ae637ceed11fe25f6c"` [INFO] running `"docker" "rm" "-f" "9a13d8a08d785c518a8ac4ca76bba89687595abf05cdb9ae637ceed11fe25f6c"` [INFO] [stdout] 9a13d8a08d785c518a8ac4ca76bba89687595abf05cdb9ae637ceed11fe25f6c