[INFO] updating cached repository jonfk/dropbox_rs [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/jonfk/dropbox_rs [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/jonfk/dropbox_rs" "work/ex/beta-1.38-1/sources/1.37.0/gh/jonfk/dropbox_rs"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/jonfk/dropbox_rs'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/jonfk/dropbox_rs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jonfk/dropbox_rs"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jonfk/dropbox_rs'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 5bdda0f3f59196a68ed39de056a6bd0ceefb1d8f [INFO] sha for GitHub repo jonfk/dropbox_rs: 5bdda0f3f59196a68ed39de056a6bd0ceefb1d8f [INFO] validating manifest of jonfk/dropbox_rs 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 jonfk/dropbox_rs 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 jonfk/dropbox_rs [INFO] finished frobbing jonfk/dropbox_rs [INFO] frobbed toml for jonfk/dropbox_rs written to work/ex/beta-1.38-1/sources/1.37.0/gh/jonfk/dropbox_rs/Cargo.toml [INFO] started frobbing jonfk/dropbox_rs [INFO] finished frobbing jonfk/dropbox_rs [INFO] frobbed toml for jonfk/dropbox_rs written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jonfk/dropbox_rs/Cargo.toml [INFO] crate jonfk/dropbox_rs 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 jonfk/dropbox_rs 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-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jonfk/dropbox_rs:/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] 727b886c0628a31821e32e1c521a3e580c9b708070eb0230124c2cd46a96acd0 [INFO] running `"docker" "start" "-a" "727b886c0628a31821e32e1c521a3e580c9b708070eb0230124c2cd46a96acd0"` [INFO] [stderr] Compiling cc v1.0.0 [INFO] [stderr] Compiling openssl v0.9.19 [INFO] [stderr] Compiling rustc-demangle v0.1.5 [INFO] [stderr] Compiling iovec v0.1.0 [INFO] [stderr] Compiling rand v0.3.16 [INFO] [stderr] Compiling num_cpus v1.6.2 [INFO] [stderr] Compiling time v0.1.38 [INFO] [stderr] Compiling net2 v0.2.31 [INFO] [stderr] Compiling tokio-service v0.1.0 [INFO] [stderr] Compiling serde_json v1.0.3 [INFO] [stderr] Compiling libflate v0.1.11 [INFO] [stderr] Compiling bytes v0.4.5 [INFO] [stderr] Compiling futures-cpupool v0.1.6 [INFO] [stderr] Compiling url v1.5.1 [INFO] [stderr] Compiling serde_derive_internals v0.16.0 [INFO] [stderr] Compiling mio v0.6.10 [INFO] [stderr] Compiling tokio-io v0.1.3 [INFO] [stderr] Compiling mime v0.3.4 [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-1.5.1/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] Compiling phf_generator v0.7.21 [INFO] [stderr] Compiling uuid v0.5.1 [INFO] [stderr] Compiling openssl-sys v0.9.19 [INFO] [stderr] Compiling backtrace-sys v0.1.14 [INFO] [stderr] Compiling phf_codegen v0.7.21 [INFO] [stderr] Compiling mime_guess v2.0.0-alpha.2 [INFO] [stderr] Compiling serde_urlencoded v0.5.1 [INFO] [stderr] Compiling tokio-core v0.1.9 [INFO] [stderr] Compiling serde_derive v1.0.15 [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-7c046994aabeb477/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: 0x560ac5edad7b - 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: 0x560ac5edad7b - 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: 0x560ac5edad7b - std::sys_common::backtrace::_print::h527254ae44989167 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:47 [INFO] [stderr] 3: 0x560ac5edad7b - std::sys_common::backtrace::print::he85dd5ddddf46503 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:36 [INFO] [stderr] 4: 0x560ac5edad7b - std::panicking::default_hook::{{closure}}::h847a2eb38b396f14 [INFO] [stderr] at src/libstd/panicking.rs:200 [INFO] [stderr] 5: 0x560ac5edaa57 - std::panicking::default_hook::h2ca0f9a30a0e206b [INFO] [stderr] at src/libstd/panicking.rs:214 [INFO] [stderr] 6: 0x560ac5edb440 - std::panicking::rust_panic_with_hook::hffcefc09751839d1 [INFO] [stderr] at src/libstd/panicking.rs:477 [INFO] [stderr] 7: 0x560ac5edafc2 - std::panicking::continue_panic_fmt::hc0f142c930c846fc [INFO] [stderr] at src/libstd/panicking.rs:384 [INFO] [stderr] 8: 0x560ac5edaea6 - rust_begin_unwind [INFO] [stderr] at src/libstd/panicking.rs:311 [INFO] [stderr] 9: 0x560ac5eefa5d - core::panicking::panic_fmt::h2daf88b2616ca2b2 [INFO] [stderr] at src/libcore/panicking.rs:85 [INFO] [stderr] 10: 0x560ac5ece138 - core::result::unwrap_failed::h43ef951cd18e7ce2 [INFO] [stderr] at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libcore/macros.rs:18 [INFO] [stderr] 11: 0x560ac5e9b81c - core::result::Result::unwrap::ha0effaf61879788a [INFO] [stderr] at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libcore/result.rs:800 [INFO] [stderr] 12: 0x560ac5e9e995 - build_script_gen_mime_types::main::h8b1c5b1364aebc18 [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: 0x560ac5ec5170 - std::rt::lang_start::{{closure}}::h1684da4b8e2c33de [INFO] [stderr] at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libstd/rt.rs:64 [INFO] [stderr] 14: 0x560ac5edae93 - std::rt::lang_start_internal::{{closure}}::h447d8812e3ee306d [INFO] [stderr] at src/libstd/rt.rs:49 [INFO] [stderr] 15: 0x560ac5edae93 - std::panicking::try::do_call::h4a61cb372364c745 [INFO] [stderr] at src/libstd/panicking.rs:296 [INFO] [stderr] 16: 0x560ac5edcc3a - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:82 [INFO] [stderr] 17: 0x560ac5edb94d - std::panicking::try::hdf71f938885bca42 [INFO] [stderr] at src/libstd/panicking.rs:275 [INFO] [stderr] 18: 0x560ac5edb94d - std::panic::catch_unwind::h7e85dbf162b1611a [INFO] [stderr] at src/libstd/panic.rs:394 [INFO] [stderr] 19: 0x560ac5edb94d - std::rt::lang_start_internal::h1e06cc26b9fc25ea [INFO] [stderr] at src/libstd/rt.rs:48 [INFO] [stderr] 20: 0x560ac5ec5149 - std::rt::lang_start::hdfb69bed9816dd76 [INFO] [stderr] at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libstd/rt.rs:64 [INFO] [stderr] 21: 0x560ac5e9ffca - main [INFO] [stderr] 22: 0x7f82139732e1 - __libc_start_main [INFO] [stderr] 23: 0x560ac5e7a3ca - _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" "727b886c0628a31821e32e1c521a3e580c9b708070eb0230124c2cd46a96acd0"` [INFO] running `"docker" "rm" "-f" "727b886c0628a31821e32e1c521a3e580c9b708070eb0230124c2cd46a96acd0"` [INFO] [stdout] 727b886c0628a31821e32e1c521a3e580c9b708070eb0230124c2cd46a96acd0