[INFO] cloning repository https://github.com/cadet-robotics/mkprop
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cadet-robotics/mkprop" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcadet-robotics%2Fmkprop", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcadet-robotics%2Fmkprop'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4103a3b0a8bbe667f84c458c0f7b439aed234ce4
[INFO] checking cadet-robotics/mkprop against master#fc81ad22c453776de16acf9938976930cf8c9401 for pr-77325
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcadet-robotics%2Fmkprop" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cadet-robotics/mkprop on toolchain fc81ad22c453776de16acf9938976930cf8c9401
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cadet-robotics/mkprop
[INFO] finished tweaking git repo https://github.com/cadet-robotics/mkprop
[INFO] tweaked toml for git repo https://github.com/cadet-robotics/mkprop written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/cadet-robotics/mkprop already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e78c3ade5300a0c41b1ed884e057cb88797edf35fb10ca7bfee398584c2b77f3
[INFO] running `Command { std: "docker" "start" "-a" "e78c3ade5300a0c41b1ed884e057cb88797edf35fb10ca7bfee398584c2b77f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e78c3ade5300a0c41b1ed884e057cb88797edf35fb10ca7bfee398584c2b77f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e78c3ade5300a0c41b1ed884e057cb88797edf35fb10ca7bfee398584c2b77f3", kill_on_drop: false }`
[INFO] [stdout] e78c3ade5300a0c41b1ed884e057cb88797edf35fb10ca7bfee398584c2b77f3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a48417e9cabdb3f63613c1d8296c124d771c39bb943d7af4b61ce0a64214bd26
[INFO] running `Command { std: "docker" "start" "-a" "a48417e9cabdb3f63613c1d8296c124d771c39bb943d7af4b61ce0a64214bd26", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling syn v1.0.35
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]    Compiling siphasher v0.3.3
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling bit-vec v0.6.2
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.4
[INFO] [stderr]    Compiling fixedbitset v0.2.0
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling diff v0.1.12
[INFO] [stderr]     Checking cesu8 v1.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling libc v0.2.72
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling phf_shared v0.8.0
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]    Compiling ena v0.14.0
[INFO] [stderr]    Compiling hashbrown v0.8.1
[INFO] [stderr]    Compiling indexmap v1.5.0
[INFO] [stderr]     Checking clap v2.33.1
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling bit-set v0.5.2
[INFO] [stderr]    Compiling aho-corasick v0.7.13
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling sha2 v0.8.2
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling term v0.5.2
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]    Compiling ascii-canvas v2.0.0
[INFO] [stderr]    Compiling petgraph v0.5.1
[INFO] [stderr]     Checking lalrpop-util v0.19.0
[INFO] [stderr]    Compiling string_cache v0.8.0
[INFO] [stderr]    Compiling docopt v1.1.0
[INFO] [stderr]    Compiling lalrpop v0.19.0
[INFO] [stderr]    Compiling mkprop v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `mkprop v0.1.0 (/opt/rustwide/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/mkprop-caaaaa0a10b49309/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   processing file `./src/parse/parse_inner.lalrpop`
[INFO] [stderr] 
[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" }', build.rs:7:10
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x55fa964fe6d0 - std::backtrace_rs::backtrace::libunwind::trace::h1037ca7e6eeef65c
[INFO] [stderr]                                  at /rustc/fc81ad22c453776de16acf9938976930cf8c9401/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stderr]      1:     0x55fa964fe6d0 - std::backtrace_rs::backtrace::trace_unsynchronized::haaefac1bc3669450
[INFO] [stderr]                                  at /rustc/fc81ad22c453776de16acf9938976930cf8c9401/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x55fa964fe6d0 - std::sys_common::backtrace::_print_fmt::h863a6f5e6d995885
[INFO] [stderr]                                  at /rustc/fc81ad22c453776de16acf9938976930cf8c9401/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x55fa964fe6d0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h767e17e1aa7df6a8
[INFO] [stderr]                                  at /rustc/fc81ad22c453776de16acf9938976930cf8c9401/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x55fa9651e0dc - core::fmt::write::h7aa6cd0067dca82a
[INFO] [stderr]                                  at /rustc/fc81ad22c453776de16acf9938976930cf8c9401/library/core/src/fmt/mod.rs:1110:17
[INFO] [stderr]      5:     0x55fa964fbec5 - std::io::Write::write_fmt::h4c802b6f761026c1
[INFO] [stderr]                                  at /rustc/fc81ad22c453776de16acf9938976930cf8c9401/library/std/src/io/mod.rs:1584:15
[INFO] [stderr]      6:     0x55fa9650064b - std::sys_common::backtrace::_print::h2769edb26a7eb606
[INFO] [stderr]                                  at /rustc/fc81ad22c453776de16acf9938976930cf8c9401/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x55fa9650064b - std::sys_common::backtrace::print::ha71f3549862b4cb6
[INFO] [stderr]                                  at /rustc/fc81ad22c453776de16acf9938976930cf8c9401/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x55fa9650064b - std::panicking::default_hook::{{closure}}::h95488a3bade217f6
[INFO] [stderr]                                  at /rustc/fc81ad22c453776de16acf9938976930cf8c9401/library/std/src/panicking.rs:208:50
[INFO] [stderr]      9:     0x55fa96500121 - std::panicking::default_hook::h290aa602c0fb11df
[INFO] [stderr]                                  at /rustc/fc81ad22c453776de16acf9938976930cf8c9401/library/std/src/panicking.rs:225:9
[INFO] [stderr]     10:     0x55fa96500cf1 - std::panicking::rust_panic_with_hook::hf32c4fa635e215f2
[INFO] [stderr]                                  at /rustc/fc81ad22c453776de16acf9938976930cf8c9401/library/std/src/panicking.rs:622:17
[INFO] [stderr]     11:     0x55fa965007f7 - std::panicking::begin_panic_handler::{{closure}}::h95197ccd88846f7a
[INFO] [stderr]                                  at /rustc/fc81ad22c453776de16acf9938976930cf8c9401/library/std/src/panicking.rs:519:13
[INFO] [stderr]     12:     0x55fa964febac - std::sys_common::backtrace::__rust_end_short_backtrace::h7641df9566f7b7d0
[INFO] [stderr]                                  at /rustc/fc81ad22c453776de16acf9938976930cf8c9401/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]     13:     0x55fa96500759 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/fc81ad22c453776de16acf9938976930cf8c9401/library/std/src/panicking.rs:515:5
[INFO] [stderr]     14:     0x55fa95cb1751 - core::panicking::panic_fmt::hbe99dddd3092ba3c
[INFO] [stderr]                                  at /rustc/fc81ad22c453776de16acf9938976930cf8c9401/library/core/src/panicking.rs:92:14
[INFO] [stderr]     15:     0x55fa95cb1843 - core::result::unwrap_failed::hf79563fef9d11ab8
[INFO] [stderr]                                  at /rustc/fc81ad22c453776de16acf9938976930cf8c9401/library/core/src/result.rs:1355:5
[INFO] [stderr]     16:     0x55fa95cb2589 - core::result::Result<T,E>::unwrap::h1dc26bd9ef9b1656
[INFO] [stderr]                                  at /rustc/fc81ad22c453776de16acf9938976930cf8c9401/library/core/src/result.rs:1037:23
[INFO] [stderr]     17:     0x55fa95cb2671 - build_script_build::main::h99b697f06224ee0d
[INFO] [stderr]                                  at /opt/rustwide/workdir/build.rs:4:5
[INFO] [stderr]     18:     0x55fa95cb229b - core::ops::function::FnOnce::call_once::h8ab4d31e6da2e640
[INFO] [stderr]                                  at /rustc/fc81ad22c453776de16acf9938976930cf8c9401/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     19:     0x55fa95cb245e - std::sys_common::backtrace::__rust_begin_short_backtrace::h9d1cb1304e33efa1
[INFO] [stderr]                                  at /rustc/fc81ad22c453776de16acf9938976930cf8c9401/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stderr]     20:     0x55fa95cb2371 - std::rt::lang_start::{{closure}}::h4291281531fde67a
[INFO] [stderr]                                  at /rustc/fc81ad22c453776de16acf9938976930cf8c9401/library/std/src/rt.rs:49:18
[INFO] [stderr]     21:     0x55fa965011e9 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h04259e4a34d07c2f
[INFO] [stderr]                                  at /rustc/fc81ad22c453776de16acf9938976930cf8c9401/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     22:     0x55fa965011e9 - std::panicking::try::do_call::hb8da45704d5cfbbf
[INFO] [stderr]                                  at /rustc/fc81ad22c453776de16acf9938976930cf8c9401/library/std/src/panicking.rs:401:40
[INFO] [stderr]     23:     0x55fa965011e9 - std::panicking::try::h4beadc19a78fec52
[INFO] [stderr]                                  at /rustc/fc81ad22c453776de16acf9938976930cf8c9401/library/std/src/panicking.rs:365:19
[INFO] [stderr]     24:     0x55fa965011e9 - std::panic::catch_unwind::hc58016cd36ba81a4
[INFO] [stderr]                                  at /rustc/fc81ad22c453776de16acf9938976930cf8c9401/library/std/src/panic.rs:433:14
[INFO] [stderr]     25:     0x55fa965011e9 - std::rt::lang_start_internal::hc51399759a90501a
[INFO] [stderr]                                  at /rustc/fc81ad22c453776de16acf9938976930cf8c9401/library/std/src/rt.rs:34:21
[INFO] [stderr]     26:     0x55fa95cb2350 - std::rt::lang_start::h0ed9ed54732932d4
[INFO] [stderr]                                  at /rustc/fc81ad22c453776de16acf9938976930cf8c9401/library/std/src/rt.rs:48:5
[INFO] [stderr]     27:     0x55fa95cb26bc - main
[INFO] [stderr]     28:     0x7fdfa28900b3 - __libc_start_main
[INFO] [stderr]     29:     0x55fa95cb1f4e - _start
[INFO] [stderr]     30:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "a48417e9cabdb3f63613c1d8296c124d771c39bb943d7af4b61ce0a64214bd26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a48417e9cabdb3f63613c1d8296c124d771c39bb943d7af4b61ce0a64214bd26", kill_on_drop: false }`
[INFO] [stdout] a48417e9cabdb3f63613c1d8296c124d771c39bb943d7af4b61ce0a64214bd26