[INFO] updating cached repository HazardDev/computer_control [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/HazardDev/computer_control [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/HazardDev/computer_control" "work/ex/beta-1.37-6/sources/1.36.0/gh/HazardDev/computer_control"` [INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/HazardDev/computer_control'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/HazardDev/computer_control" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/HazardDev/computer_control"` [INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/HazardDev/computer_control'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 99c21105529be0801d7908f2fa09896a83ce4135 [INFO] sha for GitHub repo HazardDev/computer_control: 99c21105529be0801d7908f2fa09896a83ce4135 [INFO] validating manifest of HazardDev/computer_control on toolchain 1.36.0 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of HazardDev/computer_control on toolchain beta-2019-07-23 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing HazardDev/computer_control [INFO] finished frobbing HazardDev/computer_control [INFO] frobbed toml for HazardDev/computer_control written to work/ex/beta-1.37-6/sources/1.36.0/gh/HazardDev/computer_control/Cargo.toml [INFO] started frobbing HazardDev/computer_control [INFO] finished frobbing HazardDev/computer_control [INFO] frobbed toml for HazardDev/computer_control written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/HazardDev/computer_control/Cargo.toml [INFO] crate HazardDev/computer_control already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing HazardDev/computer_control against beta-2019-07-23 for beta-1.37-6 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/HazardDev/computer_control:/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-2019-07-23" "build" "--frozen"` [INFO] [stdout] 4afcbed22a1f67f9ceb723c3c8208b0af4a143fe386c82555270bac440489ccf [INFO] running `"docker" "start" "-a" "4afcbed22a1f67f9ceb723c3c8208b0af4a143fe386c82555270bac440489ccf"` [INFO] [stderr] Compiling yansi v0.4.0 [INFO] [stderr] Compiling serde v1.0.38 [INFO] [stderr] Compiling pear v0.0.16 [INFO] [stderr] Compiling smallvec v0.4.4 [INFO] [stderr] Compiling state v0.4.0 [INFO] [stderr] Compiling ordermap v0.2.13 [INFO] [stderr] Compiling num_cpus v1.8.0 [INFO] [stderr] Compiling rand v0.4.2 [INFO] [stderr] Compiling unicase v1.4.2 [INFO] [stderr] Compiling time v0.1.39 [INFO] [stderr] Compiling isatty v0.1.7 [INFO] [stderr] Compiling memchr v1.0.2 [INFO] [stderr] Compiling alsa-sys v0.1.1 [INFO] [stderr] Compiling base64 v0.6.0 [INFO] [stderr] Compiling crossbeam-epoch v0.3.1 [INFO] [stderr] Compiling pear_codegen v0.0.16 [INFO] [stderr] Compiling rocket v0.3.8 [INFO] [stderr] Compiling rocket_codegen v0.3.8 [INFO] [stderr] Compiling mime v0.2.6 [INFO] [stderr] Compiling url v1.7.0 [INFO] [stderr] error: failed to run custom build command for `pear_codegen v0.0.16` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `/opt/crater/target/debug/build/pear_codegen-066590fa1c03ee5d/build-script-build` (exit code: 101) [INFO] [stderr] --- stderr [INFO] [stderr] Error: Pear requires a nightly or dev version of Rust. [INFO] [stderr] Installed version is: 1.37.0-beta.6 (2019-07-22). Minimum required: 1.27.0-nightly (2018-04-14). [INFO] [stderr] thread 'main' panicked at 'Aborting compilation due to incompatible compiler.', /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/pear_codegen-0.0.16/build.rs:31:13 [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x55ef3c1afbdb - backtrace::backtrace::libunwind::trace::h5dfa5d4c5feed6dc [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88 [INFO] [stderr] 1: 0x55ef3c1afbdb - backtrace::backtrace::trace_unsynchronized::hb731fe64f3fa469f [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x55ef3c1afbdb - std::sys_common::backtrace::_print::hf4fd45fe7ae4a250 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:47 [INFO] [stderr] 3: 0x55ef3c1afbdb - std::sys_common::backtrace::print::h31646c3786c57441 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:36 [INFO] [stderr] 4: 0x55ef3c1afbdb - std::panicking::default_hook::{{closure}}::hda785e768c746ae7 [INFO] [stderr] at src/libstd/panicking.rs:200 [INFO] [stderr] 5: 0x55ef3c1af8b7 - std::panicking::default_hook::h0c4b76f338614ef1 [INFO] [stderr] at src/libstd/panicking.rs:214 [INFO] [stderr] 6: 0x55ef3c1b02a0 - std::panicking::rust_panic_with_hook::h096dff2cb12b67ce [INFO] [stderr] at src/libstd/panicking.rs:477 [INFO] [stderr] 7: 0x55ef3c185044 - std::panicking::begin_panic::hce474d621d6c4e1e [INFO] [stderr] at /rustc/61d1607e0f6a18bb4897d6f9b10abeac9e11eb8e/src/libstd/panicking.rs:411 [INFO] [stderr] 8: 0x55ef3c18314b - build_script_build::main::h05b6d2ebbfe11bdf [INFO] [stderr] at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/pear_codegen-0.0.16/build.rs:31 [INFO] [stderr] 9: 0x55ef3c184450 - std::rt::lang_start::{{closure}}::h6dc8ef1e0ddf1c3a [INFO] [stderr] at /rustc/61d1607e0f6a18bb4897d6f9b10abeac9e11eb8e/src/libstd/rt.rs:64 [INFO] [stderr] 10: 0x55ef3c1afcf3 - std::rt::lang_start_internal::{{closure}}::h055e1fdc5578d418 [INFO] [stderr] at src/libstd/rt.rs:49 [INFO] [stderr] 11: 0x55ef3c1afcf3 - std::panicking::try::do_call::h480cafa68c9928b4 [INFO] [stderr] at src/libstd/panicking.rs:296 [INFO] [stderr] 12: 0x55ef3c1b5faa - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:82 [INFO] [stderr] 13: 0x55ef3c1b07ad - std::panicking::try::he0549d0299de204a [INFO] [stderr] at src/libstd/panicking.rs:275 [INFO] [stderr] 14: 0x55ef3c1b07ad - std::panic::catch_unwind::h422dc2db98f03517 [INFO] [stderr] at src/libstd/panic.rs:394 [INFO] [stderr] 15: 0x55ef3c1b07ad - std::rt::lang_start_internal::h121de03325a3f900 [INFO] [stderr] at src/libstd/rt.rs:48 [INFO] [stderr] 16: 0x55ef3c184429 - std::rt::lang_start::ha31098972764c8e6 [INFO] [stderr] at /rustc/61d1607e0f6a18bb4897d6f9b10abeac9e11eb8e/src/libstd/rt.rs:64 [INFO] [stderr] 17: 0x55ef3c183f0a - main [INFO] [stderr] 18: 0x7f3ba8e822e1 - __libc_start_main [INFO] [stderr] 19: 0x55ef3c182a8a - _start [INFO] [stderr] 20: 0x0 - [INFO] [stderr] [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [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-1.7.0/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] error: build failed [INFO] running `"docker" "inspect" "4afcbed22a1f67f9ceb723c3c8208b0af4a143fe386c82555270bac440489ccf"` [INFO] running `"docker" "rm" "-f" "4afcbed22a1f67f9ceb723c3c8208b0af4a143fe386c82555270bac440489ccf"` [INFO] [stdout] 4afcbed22a1f67f9ceb723c3c8208b0af4a143fe386c82555270bac440489ccf