[INFO] updating cached repository https://github.com/peopleagainstprisons/earmms_keyderiv
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b8906fe635f1d2538ec024812883fd793c2158f0
[INFO] testing peopleagainstprisons/earmms_keyderiv against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpeopleagainstprisons%2Fearmms_keyderiv" "work/builds/worker-5/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/peopleagainstprisons/earmms_keyderiv on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/peopleagainstprisons/earmms_keyderiv
[INFO] finished tweaking git repo https://github.com/peopleagainstprisons/earmms_keyderiv
[INFO] tweaked toml for git repo https://github.com/peopleagainstprisons/earmms_keyderiv written to work/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/peopleagainstprisons/earmms_keyderiv already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 537e2b19a30da1da67d470d07897a55c637616da21a90366d0946cba2e7c056d
[INFO] running `"docker" "start" "-a" "537e2b19a30da1da67d470d07897a55c637616da21a90366d0946cba2e7c056d"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling unwrap v1.2.1
[INFO] [stderr]    Compiling safemem v0.1.1
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling num-complex v0.1.41
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling miniz_oxide_c_api v0.2.0
[INFO] [stderr]    Compiling crc32fast v1.1.2
[INFO] [stderr]    Compiling rand v0.3.20
[INFO] [stderr]    Compiling time v0.1.39
[INFO] [stderr]    Compiling filetime v0.2.4
[INFO] [stderr]    Compiling memchr v2.0.2
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling serde_json v1.0.9
[INFO] [stderr]    Compiling rand v0.4.5
[INFO] [stderr]    Compiling openssl v0.10.16
[INFO] [stderr]    Compiling backtrace v0.3.12
[INFO] [stderr]    Compiling clap v2.30.0
[INFO] [stderr]    Compiling structopt-derive v0.2.14
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling buf_redux v0.6.1
[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]    Compiling twoway v0.1.7
[INFO] [stderr]    Compiling tar v0.4.20
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling msdos_time v0.1.6
[INFO] [stderr]    Compiling flate2 v1.0.6
[INFO] [stderr]    Compiling phf_generator v0.7.21
[INFO] [stderr]    Compiling num-bigint v0.1.41
[INFO] [stderr]    Compiling tempdir v0.3.5
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]    Compiling mime v0.2.6
[INFO] [stderr]    Compiling regex v0.2.5
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling phf_codegen v0.7.21
[INFO] [stderr]    Compiling hyper v0.10.13
[INFO] [stderr]    Compiling mime_guess v1.8.3
[INFO] [stderr]    Compiling zip v0.3.3
[INFO] [stderr]    Compiling num-rational v0.1.40
[INFO] [stderr]    Compiling env_logger v0.4.3
[INFO] [stderr]    Compiling native-tls v0.2.2
[INFO] [stderr]    Compiling num v0.1.41
[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-ee16962d11e74b89/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:1084:5
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x563dc655ae5b - backtrace::backtrace::libunwind::trace::h89fcc71e59e3bc5b
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.34/src/backtrace/libunwind.rs:88
[INFO] [stderr]    1:     0x563dc655ae5b - backtrace::backtrace::trace_unsynchronized::h0bad9be1379e729a
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.34/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x563dc655ae5b - std::sys_common::backtrace::_print::hd3382a1f33c473da
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:47
[INFO] [stderr]    3:     0x563dc655ae5b - std::sys_common::backtrace::print::h0ec6f03cfb8e76a6
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:36
[INFO] [stderr]    4:     0x563dc655ae5b - std::panicking::default_hook::{{closure}}::h96cbf7b454e3f557
[INFO] [stderr]                                at src/libstd/panicking.rs:200
[INFO] [stderr]    5:     0x563dc655ab36 - std::panicking::default_hook::h95a8f00337383d83
[INFO] [stderr]                                at src/libstd/panicking.rs:214
[INFO] [stderr]    6:     0x563dc655b51d - std::panicking::rust_panic_with_hook::h92f98b46e22f14ed
[INFO] [stderr]                                at src/libstd/panicking.rs:477
[INFO] [stderr]    7:     0x563dc655b0a2 - std::panicking::continue_panic_fmt::h25abfbb4e5b7043a
[INFO] [stderr]                                at src/libstd/panicking.rs:384
[INFO] [stderr]    8:     0x563dc655af86 - rust_begin_unwind
[INFO] [stderr]                                at src/libstd/panicking.rs:311
[INFO] [stderr]    9:     0x563dc656fc9d - core::panicking::panic_fmt::h7e9f94035af782b3
[INFO] [stderr]                                at src/libcore/panicking.rs:85
[INFO] [stderr]   10:     0x563dc656fd97 - core::result::unwrap_failed::hf7591c1dd9412006
[INFO] [stderr]                                at src/libcore/result.rs:1084
[INFO] [stderr]   11:     0x563dc6521400 - core::result::Result<T,E>::unwrap::hcc0b7d2ee51543f1
[INFO] [stderr]                                at /rustc/625451e376bb2e5283fc4741caa0a3e8a2ca4d54/src/libcore/result.rs:852
[INFO] [stderr]   12:     0x563dc65233d5 - build_script_gen_mime_types::main::hb2e90861730bc301
[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]   13:     0x563dc650e100 - std::rt::lang_start::{{closure}}::h8300625e5d43ba43
[INFO] [stderr]                                at /rustc/625451e376bb2e5283fc4741caa0a3e8a2ca4d54/src/libstd/rt.rs:64
[INFO] [stderr]   14:     0x563dc655af73 - std::rt::lang_start_internal::{{closure}}::h4e93c1949c7a1955
[INFO] [stderr]                                at src/libstd/rt.rs:49
[INFO] [stderr]   15:     0x563dc655af73 - std::panicking::try::do_call::h9440ccd4dc467eaa
[INFO] [stderr]                                at src/libstd/panicking.rs:296
[INFO] [stderr]   16:     0x563dc655ceda - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:80
[INFO] [stderr]   17:     0x563dc655ba2d - std::panicking::try::hc046e7ee42ee744f
[INFO] [stderr]                                at src/libstd/panicking.rs:275
[INFO] [stderr]   18:     0x563dc655ba2d - std::panic::catch_unwind::h27dfc457c200aee0
[INFO] [stderr]                                at src/libstd/panic.rs:394
[INFO] [stderr]   19:     0x563dc655ba2d - std::rt::lang_start_internal::hea1b49a567afe309
[INFO] [stderr]                                at src/libstd/rt.rs:48
[INFO] [stderr]   20:     0x563dc650e0d9 - std::rt::lang_start::h37fce67a3ba65d2b
[INFO] [stderr]                                at /rustc/625451e376bb2e5283fc4741caa0a3e8a2ca4d54/src/libstd/rt.rs:64
[INFO] [stderr]   21:     0x563dc652495a - main
[INFO] [stderr]   22:     0x7f6fb5201b97 - __libc_start_main
[INFO] [stderr]   23:     0x563dc64f9b2a - _start
[INFO] [stderr]   24:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "537e2b19a30da1da67d470d07897a55c637616da21a90366d0946cba2e7c056d"`
[INFO] running `"docker" "rm" "-f" "537e2b19a30da1da67d470d07897a55c637616da21a90366d0946cba2e7c056d"`
[INFO] [stdout] 537e2b19a30da1da67d470d07897a55c637616da21a90366d0946cba2e7c056d