[INFO] updating cached repository rusts/team [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/rusts/team [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/rusts/team" "work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/rusts/team"` [INFO] [stderr] Cloning into 'work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/rusts/team'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/rusts/team" "work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/rusts/team"` [INFO] [stderr] Cloning into 'work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/rusts/team'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 7782b892017078eff551e37057e06d5241ac90dc [INFO] sha for GitHub repo rusts/team: 7782b892017078eff551e37057e06d5241ac90dc [INFO] validating manifest of rusts/team on toolchain master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of rusts/team on toolchain try#18481b65f318e0b4b20c0fc61340054701719d6c [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing rusts/team [INFO] finished frobbing rusts/team [INFO] frobbed toml for rusts/team written to work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/rusts/team/Cargo.toml [INFO] started frobbing rusts/team [INFO] finished frobbing rusts/team [INFO] frobbed toml for rusts/team written to work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/rusts/team/Cargo.toml [INFO] crate rusts/team already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking rusts/team against try#18481b65f318e0b4b20c0fc61340054701719d6c for pr-62507 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62507/worker-3/try#18481b65f318e0b4b20c0fc61340054701719d6c:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/rusts/team:/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" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] 82186541b850ae1f5e4b952b9ce35eb91290c0f2f3cd48c47ac2517e6df71676 [INFO] running `"docker" "start" "-a" "82186541b850ae1f5e4b952b9ce35eb91290c0f2f3cd48c47ac2517e6df71676"` [INFO] [stderr] Compiling openssl v0.9.12 [INFO] [stderr] Checking serde v1.0.7 [INFO] [stderr] Checking diff v0.1.10 [INFO] [stderr] Checking iovec v0.1.0 [INFO] [stderr] Compiling backtrace-sys v0.1.10 [INFO] [stderr] Checking thread-id v3.1.0 [INFO] [stderr] Compiling rust-crypto v0.2.36 [INFO] [stderr] Checking memchr v0.1.11 [INFO] [stderr] Compiling openssl-sys v0.9.12 [INFO] [stderr] Compiling libz-sys v1.0.13 [INFO] [stderr] Checking net2 v0.2.29 [INFO] [stderr] Compiling curl-sys v0.3.11 [INFO] [stderr] Checking fern v0.4.0 [INFO] [stderr] Checking serde_json v0.8.6 [INFO] [stderr] Checking idna v0.1.1 [INFO] [stderr] Checking tempdir v0.3.5 [INFO] [stderr] Checking futures-cpupool v0.1.5 [INFO] [stderr] Checking postgres-protocol v0.2.2 [INFO] [stderr] Checking bytes v0.4.4 [INFO] [stderr] Checking thread_local v0.3.3 [INFO] [stderr] Checking r2d2 v0.7.2 [INFO] [stderr] Checking mio v0.6.9 [INFO] [stderr] Checking regex v0.2.1 [INFO] [stderr] Checking num v0.1.37 [INFO] [stderr] Checking tokio-io v0.1.2 [INFO] [stderr] Checking libflate v0.1.14 [INFO] [stderr] Compiling serde_derive v1.0.7 [INFO] [stderr] Compiling phf_shared v0.7.21 [INFO] [stderr] Checking url v1.4.0 [INFO] [stderr] Compiling phf_generator v0.7.21 [INFO] [stderr] Checking tokio-core v0.1.8 [INFO] [stderr] Checking phf v0.7.21 [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-1.4.0/src/form_urlencoded.rs:246:40 [INFO] [stderr] | [INFO] [stderr] 244 | impl<'a> Target for ::UrlQuery<'a> { [INFO] [stderr] | -- lifetime `'a` defined here [INFO] [stderr] 245 | fn as_mut_string(&mut self) -> &mut String { &mut self.url.serialization } [INFO] [stderr] 246 | 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] Checking tokio-proto v0.1.1 [INFO] [stderr] Compiling mime_guess v1.8.1 [INFO] [stderr] Checking hyper v0.10.10 [INFO] [stderr] Checking hyper v0.11.0 [INFO] [stderr] Checking native-tls v0.1.2 [INFO] [stderr] Checking cookie v0.5.1 [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-4cbe65e37cec7091/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:1051:5 [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x55b9b0a27b1b - backtrace::backtrace::libunwind::trace::hbfb69e72f505529b [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88 [INFO] [stderr] 1: 0x55b9b0a27b1b - backtrace::backtrace::trace_unsynchronized::hac9ea77fa06b91bd [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x55b9b0a27b1b - std::sys_common::backtrace::_print::hf6f722cabcf8c26d [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:47 [INFO] [stderr] 3: 0x55b9b0a27b1b - std::sys_common::backtrace::print::h9cca5983945bdb52 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:36 [INFO] [stderr] 4: 0x55b9b0a27b1b - std::panicking::default_hook::{{closure}}::h2fab7259edc3a80d [INFO] [stderr] at src/libstd/panicking.rs:200 [INFO] [stderr] 5: 0x55b9b0a277f7 - std::panicking::default_hook::ha99acf6d9268d46d [INFO] [stderr] at src/libstd/panicking.rs:214 [INFO] [stderr] 6: 0x55b9b0a281e0 - std::panicking::rust_panic_with_hook::hddab2c65ce92e648 [INFO] [stderr] at src/libstd/panicking.rs:477 [INFO] [stderr] 7: 0x55b9b0a27d62 - std::panicking::continue_panic_fmt::hfaaf28183fee9f60 [INFO] [stderr] at src/libstd/panicking.rs:384 [INFO] [stderr] 8: 0x55b9b0a27c46 - rust_begin_unwind [INFO] [stderr] at src/libstd/panicking.rs:311 [INFO] [stderr] 9: 0x55b9b0a3c94d - core::panicking::panic_fmt::hc776b72619f795d7 [INFO] [stderr] at src/libcore/panicking.rs:85 [INFO] [stderr] 10: 0x55b9b0a1aeb8 - core::result::unwrap_failed::h8296d3835636540b [INFO] [stderr] at /rustc/18481b65f318e0b4b20c0fc61340054701719d6c/src/libcore/macros.rs:18 [INFO] [stderr] 11: 0x55b9b09e844c - core::result::Result::unwrap::h43b6f302f5980718 [INFO] [stderr] at /rustc/18481b65f318e0b4b20c0fc61340054701719d6c/src/libcore/result.rs:852 [INFO] [stderr] 12: 0x55b9b09eb6a5 - build_script_gen_mime_types::main::h82c00ae1ff9a5a38 [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: 0x55b9b0a12050 - std::rt::lang_start::{{closure}}::h5d4f973acd389f59 [INFO] [stderr] at /rustc/18481b65f318e0b4b20c0fc61340054701719d6c/src/libstd/rt.rs:64 [INFO] [stderr] 14: 0x55b9b0a27c33 - std::rt::lang_start_internal::{{closure}}::hbec6d1ff7b00d029 [INFO] [stderr] at src/libstd/rt.rs:49 [INFO] [stderr] 15: 0x55b9b0a27c33 - std::panicking::try::do_call::h83e51489f66cd002 [INFO] [stderr] at src/libstd/panicking.rs:296 [INFO] [stderr] 16: 0x55b9b0a29b7a - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:82 [INFO] [stderr] 17: 0x55b9b0a286ed - std::panicking::try::hb1deae6a8854c8be [INFO] [stderr] at src/libstd/panicking.rs:275 [INFO] [stderr] 18: 0x55b9b0a286ed - std::panic::catch_unwind::hff09c33b8b66b7a2 [INFO] [stderr] at src/libstd/panic.rs:394 [INFO] [stderr] 19: 0x55b9b0a286ed - std::rt::lang_start_internal::h01b3f7988e3fe75d [INFO] [stderr] at src/libstd/rt.rs:48 [INFO] [stderr] 20: 0x55b9b0a12029 - std::rt::lang_start::hbd4306ca76997fc4 [INFO] [stderr] at /rustc/18481b65f318e0b4b20c0fc61340054701719d6c/src/libstd/rt.rs:64 [INFO] [stderr] 21: 0x55b9b09eccda - main [INFO] [stderr] 22: 0x7f56964ec2e1 - __libc_start_main [INFO] [stderr] 23: 0x55b9b09c70aa - _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" "82186541b850ae1f5e4b952b9ce35eb91290c0f2f3cd48c47ac2517e6df71676"` [INFO] running `"docker" "rm" "-f" "82186541b850ae1f5e4b952b9ce35eb91290c0f2f3cd48c47ac2517e6df71676"` [INFO] [stdout] 82186541b850ae1f5e4b952b9ce35eb91290c0f2f3cd48c47ac2517e6df71676