Dec 18 07:36:36.537 INFO checking FredericDesgreniers/my_web_server against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252 Dec 18 07:36:36.537 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-7/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/FredericDesgreniers/my_web_server:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"` Dec 18 07:36:36.994 INFO [stdout] c5974d14be776ea56bb38b8c1a20918927cabf60ad9d6f4712dd4406cfb2cdec Dec 18 07:36:36.996 INFO running `"docker" "start" "-a" "c5974d14be776ea56bb38b8c1a20918927cabf60ad9d6f4712dd4406cfb2cdec"` Dec 18 07:36:38.960 INFO [stderr] Compiling minify v1.1.1 Dec 18 07:36:38.961 INFO [stderr] Checking router v0.1.0 (/opt/crater/workdir/router) Dec 18 07:36:39.002 INFO [stderr] Compiling miniz_oxide v0.1.3 Dec 18 07:36:39.006 INFO [stderr] Compiling backtrace v0.3.9 Dec 18 07:36:39.012 INFO [stderr] Checking crossbeam-deque v0.5.2 Dec 18 07:36:39.020 INFO [stderr] Compiling rayon v1.0.2 Dec 18 07:36:41.680 INFO [stderr] Checking http v0.1.0 (/opt/crater/workdir/http) Dec 18 07:36:43.080 INFO [stderr] Checking crossbeam v0.4.1 Dec 18 07:36:43.252 INFO [stderr] Compiling failure v0.1.2 Dec 18 07:36:45.480 INFO [stderr] Checking pool v0.1.0 (/opt/crater/workdir/pool) Dec 18 07:36:46.012 INFO [stderr] Compiling miniz_oxide_c_api v0.1.3 Dec 18 07:36:48.648 INFO [stderr] Checking http_server v0.1.0 (/opt/crater/workdir/http_server) Dec 18 07:36:49.350 INFO [stderr] Compiling flate2 v1.0.2 Dec 18 07:36:54.268 INFO [stderr] Compiling milton v0.1.0 (/opt/crater/workdir) Dec 18 07:36:54.748 INFO [stderr] warning: unused `std::result::Result` that must be used Dec 18 07:36:54.748 INFO [stderr] --> pre_build.rs:13:5 Dec 18 07:36:54.748 INFO [stderr] | Dec 18 07:36:54.748 INFO [stderr] 13 | remove_dir_all("./static_out"); Dec 18 07:36:54.748 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 18 07:36:54.748 INFO [stderr] | Dec 18 07:36:54.748 INFO [stderr] = note: #[warn(unused_must_use)] on by default Dec 18 07:36:54.748 INFO [stderr] = note: this `Result` may be an `Err` variant, which should be handled Dec 18 07:36:54.748 INFO [stderr] Dec 18 07:36:54.748 INFO [stderr] warning: unused `std::result::Result` that must be used Dec 18 07:36:54.748 INFO [stderr] --> pre_build.rs:14:5 Dec 18 07:36:54.748 INFO [stderr] | Dec 18 07:36:54.748 INFO [stderr] 14 | create_dir_all("./static_out"); Dec 18 07:36:54.748 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 18 07:36:54.748 INFO [stderr] | Dec 18 07:36:54.748 INFO [stderr] = note: this `Result` may be an `Err` variant, which should be handled Dec 18 07:36:54.748 INFO [stderr] Dec 18 07:36:55.519 INFO [stderr] error: failed to run custom build command for `milton v0.1.0 (/opt/crater/workdir)` Dec 18 07:36:55.519 INFO [stderr] process didn't exit successfully: `/opt/crater/target/debug/build/milton-8294f822e458d9d8/build-script-pre_build` (exit code: 101) Dec 18 07:36:55.519 INFO [stderr] --- stderr Dec 18 07:36:55.519 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:1009:5 Dec 18 07:36:55.519 INFO [stderr] stack backtrace: Dec 18 07:36:55.519 INFO [stderr] 0: 0x55d2e75d6363 - std::sys::unix::backtrace::tracing::imp::unwind_backtrace::h44947915b4ce106c Dec 18 07:36:55.519 INFO [stderr] at src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:49 Dec 18 07:36:55.519 INFO [stderr] 1: 0x55d2e75d0fb8 - std::sys_common::backtrace::_print::h9b364e38c5a7c3b7 Dec 18 07:36:55.519 INFO [stderr] at src/libstd/sys_common/backtrace.rs:71 Dec 18 07:36:55.519 INFO [stderr] 2: 0x55d2e75d5452 - std::panicking::default_hook::{{closure}}::h4a78037420a8f996 Dec 18 07:36:55.519 INFO [stderr] at src/libstd/sys_common/backtrace.rs:59 Dec 18 07:36:55.519 INFO [stderr] at src/libstd/panicking.rs:210 Dec 18 07:36:55.519 INFO [stderr] 3: 0x55d2e75d51c4 - std::panicking::default_hook::hdb77fdf69b85f0b1 Dec 18 07:36:55.519 INFO [stderr] at src/libstd/panicking.rs:225 Dec 18 07:36:55.519 INFO [stderr] 4: 0x55d2e75d5b10 - std::panicking::rust_panic_with_hook::hbe5771a12dc74a18 Dec 18 07:36:55.519 INFO [stderr] at src/libstd/panicking.rs:488 Dec 18 07:36:55.519 INFO [stderr] 5: 0x55d2e75d5691 - std::panicking::continue_panic_fmt::hcd43bdf9728281f0 Dec 18 07:36:55.519 INFO [stderr] at src/libstd/panicking.rs:395 Dec 18 07:36:55.519 INFO [stderr] 6: 0x55d2e75d5575 - rust_begin_unwind Dec 18 07:36:55.519 INFO [stderr] at src/libstd/panicking.rs:322 Dec 18 07:36:55.519 INFO [stderr] 7: 0x55d2e75e4fac - core::panicking::panic_fmt::h41f7fe147eb7ed1e Dec 18 07:36:55.519 INFO [stderr] at src/libcore/panicking.rs:95 Dec 18 07:36:55.519 INFO [stderr] 8: 0x55d2e7592510 - core::result::unwrap_failed::h67437aa63ff6a755 Dec 18 07:36:55.520 INFO [stderr] at /rustc/0b8c5828f68d7b2840b81fa51239346dc97fef5a/src/libcore/macros.rs:26 Dec 18 07:36:55.520 INFO [stderr] 9: 0x55d2e756fc7a - >::unwrap::h79d2a0a597c80add Dec 18 07:36:55.520 INFO [stderr] at /rustc/0b8c5828f68d7b2840b81fa51239346dc97fef5a/src/libcore/result.rs:808 Dec 18 07:36:55.520 INFO [stderr] 10: 0x55d2e756bdaa - build_script_pre_build::main::hbe0d06f21872eb30 Dec 18 07:36:55.520 INFO [stderr] at /opt/crater/workdir/pre_build.rs:50 Dec 18 07:36:55.520 INFO [stderr] 11: 0x55d2e756cc5f - std::rt::lang_start::{{closure}}::hc940fb34ed77993a Dec 18 07:36:55.520 INFO [stderr] at /rustc/0b8c5828f68d7b2840b81fa51239346dc97fef5a/src/libstd/rt.rs:74 Dec 18 07:36:55.520 INFO [stderr] 12: 0x55d2e75d5562 - std::panicking::try::do_call::hdfd0d6403b456967 Dec 18 07:36:55.520 INFO [stderr] at src/libstd/rt.rs:59 Dec 18 07:36:55.520 INFO [stderr] at src/libstd/panicking.rs:307 Dec 18 07:36:55.520 INFO [stderr] 13: 0x55d2e75e3f79 - __rust_maybe_catch_panic Dec 18 07:36:55.520 INFO [stderr] at src/libpanic_unwind/lib.rs:102 Dec 18 07:36:55.520 INFO [stderr] 14: 0x55d2e75d5ee3 - std::rt::lang_start_internal::h3c59079606e8bd8c Dec 18 07:36:55.520 INFO [stderr] at src/libstd/panicking.rs:286 Dec 18 07:36:55.520 INFO [stderr] at src/libstd/panic.rs:398 Dec 18 07:36:55.520 INFO [stderr] at src/libstd/rt.rs:58 Dec 18 07:36:55.520 INFO [stderr] 15: 0x55d2e756cc38 - std::rt::lang_start::hca685bf4daa651a4 Dec 18 07:36:55.520 INFO [stderr] at /rustc/0b8c5828f68d7b2840b81fa51239346dc97fef5a/src/libstd/rt.rs:74 Dec 18 07:36:55.520 INFO [stderr] 16: 0x55d2e756c409 - main Dec 18 07:36:55.520 INFO [stderr] 17: 0x7f1c4e17e2e0 - __libc_start_main Dec 18 07:36:55.520 INFO [stderr] 18: 0x55d2e756ae49 - _start Dec 18 07:36:55.520 INFO [stderr] 19: 0x0 - Dec 18 07:36:55.520 INFO [stderr] Dec 18 07:36:56.304 INFO running `"docker" "inspect" "c5974d14be776ea56bb38b8c1a20918927cabf60ad9d6f4712dd4406cfb2cdec"` Dec 18 07:36:56.562 INFO running `"docker" "rm" "-f" "c5974d14be776ea56bb38b8c1a20918927cabf60ad9d6f4712dd4406cfb2cdec"` Dec 18 07:36:56.841 INFO [stdout] c5974d14be776ea56bb38b8c1a20918927cabf60ad9d6f4712dd4406cfb2cdec