[INFO] cloning repository https://github.com/ftabaro/mutation-viewer [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ftabaro/mutation-viewer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fftabaro%2Fmutation-viewer", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fftabaro%2Fmutation-viewer'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] ef1388ebda5c3302ee7d22a2f6eb78127294591c [INFO] checking ftabaro/mutation-viewer against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fftabaro%2Fmutation-viewer" "/workspace/builds/worker-2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/ftabaro/mutation-viewer on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/ftabaro/mutation-viewer [INFO] finished tweaking git repo https://github.com/ftabaro/mutation-viewer [INFO] tweaked toml for git repo https://github.com/ftabaro/mutation-viewer written to /workspace/builds/worker-2/source/Cargo.toml [INFO] crate git repo https://github.com/ftabaro/mutation-viewer already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded base64 v0.7.0 [INFO] [stderr] Downloaded buf_redux v0.6.1 [INFO] [stderr] Downloaded rouille v2.0.0 [INFO] [stderr] Downloaded safemem v0.1.1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 77e347dc46b14218c57c813dccca1b59af60aa03d35731aada6b3b81474b0968 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "77e347dc46b14218c57c813dccca1b59af60aa03d35731aada6b3b81474b0968", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "77e347dc46b14218c57c813dccca1b59af60aa03d35731aada6b3b81474b0968", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "77e347dc46b14218c57c813dccca1b59af60aa03d35731aada6b3b81474b0968", kill_on_drop: false }` [INFO] [stdout] 77e347dc46b14218c57c813dccca1b59af60aa03d35731aada6b3b81474b0968 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 2f3e86b693ed464639a634ff34f8eb83d65f18e2f30e15f76b91d44da58bf464 [INFO] running `Command { std: "docker" "start" "-a" "2f3e86b693ed464639a634ff34f8eb83d65f18e2f30e15f76b91d44da58bf464", kill_on_drop: false }` [INFO] [stderr] Checking num-traits v0.2.0 [INFO] [stderr] Checking encoding_index_tests v0.1.4 [INFO] [stderr] Compiling siphasher v0.2.2 [INFO] [stderr] Checking matches v0.1.6 [INFO] [stderr] Compiling gcc v0.3.54 [INFO] [stderr] Checking rustc-serialize v0.3.24 [INFO] [stderr] Checking lazy_static v1.0.0 [INFO] [stderr] Checking unicode-normalization v0.1.5 [INFO] [stderr] Checking serde v1.0.27 [INFO] [stderr] Checking safemem v0.1.1 [INFO] [stderr] Checking safemem v0.2.0 [INFO] [stderr] Checking httparse v1.2.4 [INFO] [stderr] Checking chunked_transfer v0.3.1 [INFO] [stderr] Checking regex-syntax v0.4.2 [INFO] [stderr] Checking ascii v0.7.1 [INFO] [stderr] Checking dtoa v0.4.2 [INFO] [stderr] Checking itoa v0.3.4 [INFO] [stderr] Checking strsim v0.6.0 [INFO] [stderr] Compiling unicase v1.4.2 [INFO] [stderr] Checking rand v0.4.2 [INFO] [stderr] Checking memchr v2.0.1 [INFO] [stderr] Checking time v0.1.39 [INFO] [stderr] Checking memchr v0.1.11 [INFO] [stderr] Checking num_cpus v1.8.0 [INFO] [stderr] Checking unreachable v1.0.0 [INFO] [stderr] Compiling miniz-sys v0.1.10 [INFO] [stderr] Checking filetime v0.1.15 [INFO] [stderr] Checking unicode-bidi v0.3.4 [INFO] [stderr] Checking encoding-index-tradchinese v1.20141219.5 [INFO] [stderr] Checking encoding-index-japanese v1.20141219.5 [INFO] [stderr] Checking encoding-index-singlebyte v1.20141219.5 [INFO] [stderr] Checking encoding-index-simpchinese v1.20141219.5 [INFO] [stderr] Checking encoding-index-korean v1.20141219.5 [INFO] [stderr] Checking base64 v0.7.0 [INFO] [stderr] Checking twoway v0.1.7 [INFO] [stderr] Checking aho-corasick v0.6.4 [INFO] [stderr] Checking buf_redux v0.6.1 [INFO] [stderr] Checking threadpool v1.7.1 [INFO] [stderr] Checking thread_local v0.3.5 [INFO] [stderr] Checking num-integer v0.1.36 [INFO] [stderr] Checking num-traits v0.1.43 [INFO] [stderr] Checking idna v0.1.4 [INFO] [stderr] Checking mime v0.2.6 [INFO] [stderr] Compiling serde_derive_internals v0.19.0 [INFO] [stderr] Checking rand v0.3.22 [INFO] [stderr] Checking remove_dir_all v0.3.0 [INFO] [stderr] Checking term v0.2.14 [INFO] [stderr] Checking encoding v0.2.33 [INFO] [stderr] Checking tempdir v0.3.6 [INFO] [stderr] Checking regex v0.2.5 [INFO] [stderr] Checking phf_shared v0.7.21 [INFO] [stderr] Checking num-iter v0.1.35 [INFO] [stderr] Checking phf v0.7.21 [INFO] [stderr] Checking num v0.1.41 [INFO] [stderr] Checking chrono v0.2.25 [INFO] [stderr] Checking chrono v0.4.0 [INFO] [stderr] Compiling phf_generator v0.7.21 [INFO] [stderr] Compiling brotli-sys v0.2.1 [INFO] [stderr] Compiling phf_codegen v0.7.21 [INFO] [stderr] Checking flate2 v0.2.20 [INFO] [stderr] Checking flate2 v1.0.1 [INFO] [stderr] Compiling mime_guess v1.8.3 [INFO] [stderr] Compiling serde_derive v1.0.27 [INFO] [stderr] Checking url v1.6.0 [INFO] [stderr] Checking uuid v0.1.18 [INFO] [stderr] error: failed to run custom build command for `mime_guess v1.8.3` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `/opt/rustwide/target/debug/build/mime_guess-d4245be62599c342/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" }', /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mime_guess-1.8.3/src/gen_mime_types.rs:22:67 [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x55c0e40c2f90 - std::backtrace_rs::backtrace::libunwind::trace::ha1eabb142084ea37 [INFO] [stderr] at /rustc/f6e2f78768c57172b99c3e85892f867894dc7e30/library/std/src/../../backtrace/src/backtrace/libunwind.rs:96 [INFO] [stderr] 1: 0x55c0e40c2f90 - std::backtrace_rs::backtrace::trace_unsynchronized::hbb8825661d997281 [INFO] [stderr] at /rustc/f6e2f78768c57172b99c3e85892f867894dc7e30/library/std/src/../../backtrace/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x55c0e40c2f90 - std::sys_common::backtrace::_print_fmt::h26d850e2f7183914 [INFO] [stderr] at /rustc/f6e2f78768c57172b99c3e85892f867894dc7e30/library/std/src/sys_common/backtrace.rs:79 [INFO] [stderr] 3: 0x55c0e40c2f90 - ::fmt::h3834b06f68a2b012 [INFO] [stderr] at /rustc/f6e2f78768c57172b99c3e85892f867894dc7e30/library/std/src/sys_common/backtrace.rs:58 [INFO] [stderr] 4: 0x55c0e40dcaac - core::fmt::write::h3a043650ba7bf668 [INFO] [stderr] at /rustc/f6e2f78768c57172b99c3e85892f867894dc7e30/library/core/src/fmt/mod.rs:1117 [INFO] [stderr] 5: 0x55c0e40c18b5 - std::io::Write::write_fmt::h9c0c8944a1898139 [INFO] [stderr] at /rustc/f6e2f78768c57172b99c3e85892f867894dc7e30/library/std/src/io/mod.rs:1510 [INFO] [stderr] 6: 0x55c0e40c5110 - std::sys_common::backtrace::_print::h693c0c2cc41d4d10 [INFO] [stderr] at /rustc/f6e2f78768c57172b99c3e85892f867894dc7e30/library/std/src/sys_common/backtrace.rs:61 [INFO] [stderr] 7: 0x55c0e40c5110 - std::sys_common::backtrace::print::h213be73e5670b8ea [INFO] [stderr] at /rustc/f6e2f78768c57172b99c3e85892f867894dc7e30/library/std/src/sys_common/backtrace.rs:48 [INFO] [stderr] 8: 0x55c0e40c5110 - std::panicking::default_hook::{{closure}}::h2d49a3361cc4e7ea [INFO] [stderr] at /rustc/f6e2f78768c57172b99c3e85892f867894dc7e30/library/std/src/panicking.rs:200 [INFO] [stderr] 9: 0x55c0e40c4e5c - std::panicking::default_hook::hd41fbdeba93207ba [INFO] [stderr] at /rustc/f6e2f78768c57172b99c3e85892f867894dc7e30/library/std/src/panicking.rs:219 [INFO] [stderr] 10: 0x55c0e40c5773 - std::panicking::rust_panic_with_hook::hcab398664b4bd473 [INFO] [stderr] at /rustc/f6e2f78768c57172b99c3e85892f867894dc7e30/library/std/src/panicking.rs:569 [INFO] [stderr] 11: 0x55c0e40c5349 - std::panicking::begin_panic_handler::{{closure}}::h7512c6f2998ba93d [INFO] [stderr] at /rustc/f6e2f78768c57172b99c3e85892f867894dc7e30/library/std/src/panicking.rs:476 [INFO] [stderr] 12: 0x55c0e40c33fc - std::sys_common::backtrace::__rust_end_short_backtrace::h1a25d7e7e1864d3d [INFO] [stderr] at /rustc/f6e2f78768c57172b99c3e85892f867894dc7e30/library/std/src/sys_common/backtrace.rs:153 [INFO] [stderr] 13: 0x55c0e40c5309 - rust_begin_unwind [INFO] [stderr] at /rustc/f6e2f78768c57172b99c3e85892f867894dc7e30/library/std/src/panicking.rs:475 [INFO] [stderr] 14: 0x55c0e40dbeb1 - core::panicking::panic_fmt::h019ad16a92ccd092 [INFO] [stderr] at /rustc/f6e2f78768c57172b99c3e85892f867894dc7e30/library/core/src/panicking.rs:85 [INFO] [stderr] 15: 0x55c0e40dbcd3 - core::option::expect_none_failed::h7135ba2fdb185931 [INFO] [stderr] at /rustc/f6e2f78768c57172b99c3e85892f867894dc7e30/library/core/src/option.rs:1274 [INFO] [stderr] 16: 0x55c0e409d2fb - core::result::Result::unwrap::hc827e66c639d6f2d [INFO] [stderr] at /rustc/f6e2f78768c57172b99c3e85892f867894dc7e30/library/core/src/result.rs:1005 [INFO] [stderr] 17: 0x55c0e40a5d4f - build_script_gen_mime_types::main::h5c96677903eb8224 [INFO] [stderr] at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mime_guess-1.8.3/src/gen_mime_types.rs:22 [INFO] [stderr] 18: 0x55c0e407df7b - core::ops::function::FnOnce::call_once::hc7fea811c569e74f [INFO] [stderr] at /rustc/f6e2f78768c57172b99c3e85892f867894dc7e30/library/core/src/ops/function.rs:233 [INFO] [stderr] 19: 0x55c0e4080dee - std::sys_common::backtrace::__rust_begin_short_backtrace::h7c80235a733fbc48 [INFO] [stderr] at /rustc/f6e2f78768c57172b99c3e85892f867894dc7e30/library/std/src/sys_common/backtrace.rs:137 [INFO] [stderr] 20: 0x55c0e407de31 - std::rt::lang_start::{{closure}}::hc5589b339f8bd574 [INFO] [stderr] at /rustc/f6e2f78768c57172b99c3e85892f867894dc7e30/library/std/src/rt.rs:66 [INFO] [stderr] 21: 0x55c0e40c5b82 - core::ops::function::impls:: for &F>::call_once::hde9814ae740a85dc [INFO] [stderr] at /rustc/f6e2f78768c57172b99c3e85892f867894dc7e30/library/core/src/ops/function.rs:265 [INFO] [stderr] 22: 0x55c0e40c5b82 - std::panicking::try::do_call::h3026bab8cd7540d7 [INFO] [stderr] at /rustc/f6e2f78768c57172b99c3e85892f867894dc7e30/library/std/src/panicking.rs:373 [INFO] [stderr] 23: 0x55c0e40c5b82 - std::panicking::try::h852bb5e5a66f7f84 [INFO] [stderr] at /rustc/f6e2f78768c57172b99c3e85892f867894dc7e30/library/std/src/panicking.rs:337 [INFO] [stderr] 24: 0x55c0e40c5b82 - std::panic::catch_unwind::hfeb0f3dddf7c6a72 [INFO] [stderr] at /rustc/f6e2f78768c57172b99c3e85892f867894dc7e30/library/std/src/panic.rs:394 [INFO] [stderr] 25: 0x55c0e40c5b82 - std::rt::lang_start_internal::h32f0ac6e87476559 [INFO] [stderr] at /rustc/f6e2f78768c57172b99c3e85892f867894dc7e30/library/std/src/rt.rs:51 [INFO] [stderr] 26: 0x55c0e407de07 - std::rt::lang_start::h1ddf13e263a3e244 [INFO] [stderr] at /rustc/f6e2f78768c57172b99c3e85892f867894dc7e30/library/std/src/rt.rs:65 [INFO] [stderr] 27: 0x55c0e40a728a - main [INFO] [stderr] 28: 0x7f28954990b3 - __libc_start_main [INFO] [stderr] 29: 0x55c0e40680ae - _start [INFO] [stderr] 30: 0x0 - [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error[E0713]: borrow may still be in use when destructor runs [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/url-1.6.0/src/form_urlencoded.rs:261:40 [INFO] [stdout] | [INFO] [stdout] 259 | impl<'a> Target for ::UrlQuery<'a> { [INFO] [stdout] | -- lifetime `'a` defined here [INFO] [stdout] 260 | fn as_mut_string(&mut self) -> &mut String { &mut self.url.serialization } [INFO] [stdout] 261 | fn finish(self) -> &'a mut ::Url { self.url } [INFO] [stdout] | ^^^^^^^^ - here, drop of `self` needs exclusive access to `*self.url`, because the type `UrlQuery<'_>` implements the `Drop` trait [INFO] [stdout] | | [INFO] [stdout] | returning this value requires that `*self.url` is borrowed for `'a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0713`. [INFO] [stdout] [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "2f3e86b693ed464639a634ff34f8eb83d65f18e2f30e15f76b91d44da58bf464", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2f3e86b693ed464639a634ff34f8eb83d65f18e2f30e15f76b91d44da58bf464", kill_on_drop: false }` [INFO] [stdout] 2f3e86b693ed464639a634ff34f8eb83d65f18e2f30e15f76b91d44da58bf464