[INFO] cloning repository https://github.com/math-fehr/lucyrs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/math-fehr/lucyrs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmath-fehr%2Flucyrs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmath-fehr%2Flucyrs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c52eb048eead3318ae80a1a74235bb502dc1e678
[INFO] checking math-fehr/lucyrs/c52eb048eead3318ae80a1a74235bb502dc1e678 against master#5337252b9952fdd9482ed6a4add17254e5bd2c40 for pr-138785
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmath-fehr%2Flucyrs" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/math-fehr/lucyrs on toolchain 5337252b9952fdd9482ed6a4add17254e5bd2c40
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5337252b9952fdd9482ed6a4add17254e5bd2c40" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/math-fehr/lucyrs
[INFO] finished tweaking git repo https://github.com/math-fehr/lucyrs
[INFO] tweaked toml for git repo https://github.com/math-fehr/lucyrs written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/math-fehr/lucyrs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5337252b9952fdd9482ed6a4add17254e5bd2c40" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: build
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded lalrpop-util v0.16.1
[INFO] [stderr]   Downloaded byte-tools v0.3.0
[INFO] [stderr]   Downloaded ena v0.10.1
[INFO] [stderr]   Downloaded docopt v1.0.2
[INFO] [stderr]   Downloaded opaque-debug v0.2.1
[INFO] [stderr]   Downloaded bit-set v0.5.0
[INFO] [stderr]   Downloaded block-padding v0.1.2
[INFO] [stderr]   Downloaded lalrpop v0.16.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+5337252b9952fdd9482ed6a4add17254e5bd2c40" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7b8c12a30509799f85c016856cd75b9ac624166c30e5d93d217e1b05cc870893
[INFO] running `Command { std: "docker" "start" "-a" "7b8c12a30509799f85c016856cd75b9ac624166c30e5d93d217e1b05cc870893", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7b8c12a30509799f85c016856cd75b9ac624166c30e5d93d217e1b05cc870893", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b8c12a30509799f85c016856cd75b9ac624166c30e5d93d217e1b05cc870893", kill_on_drop: false }`
[INFO] [stdout] 7b8c12a30509799f85c016856cd75b9ac624166c30e5d93d217e1b05cc870893
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTDOCFLAGS=--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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+5337252b9952fdd9482ed6a4add17254e5bd2c40" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e9ed1eb29d4b8a588411352e76ee98181ed7bea365196017f7483ce0a8c497fe
[INFO] running `Command { std: "docker" "start" "-a" "e9ed1eb29d4b8a588411352e76ee98181ed7bea365196017f7483ce0a8c497fe", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: build
[INFO] [stderr]    Compiling libc v0.2.43
[INFO] [stderr]    Compiling proc-macro2 v0.4.23
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling rand_core v0.3.0
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling serde v1.0.80
[INFO] [stderr]    Compiling lazy_static v1.2.0
[INFO] [stderr]    Compiling phf_shared v0.7.23
[INFO] [stderr]    Compiling string_cache_shared v0.3.0
[INFO] [stderr]    Compiling memchr v2.1.1
[INFO] [stderr]    Compiling rand_core v0.2.2
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling regex v1.0.6
[INFO] [stderr]    Compiling ucd-util v0.1.2
[INFO] [stderr]    Compiling byte-tools v0.3.0
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling regex-syntax v0.6.3
[INFO] [stderr]    Compiling block-padding v0.1.2
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling byteorder v1.2.7
[INFO] [stderr]    Compiling rand v0.5.5
[INFO] [stderr]    Compiling utf8-ranges v1.0.2
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.1
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling bit-vec v0.5.0
[INFO] [stderr]    Compiling fake-simd v0.1.2
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]    Compiling generic-array v0.12.0
[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]    Compiling opaque-debug v0.2.1
[INFO] [stderr]    Compiling ordermap v0.3.5
[INFO] [stderr]    Compiling phf_generator v0.7.23
[INFO] [stderr]    Compiling syn v0.15.20
[INFO] [stderr]    Compiling block-buffer v0.7.0
[INFO] [stderr]    Compiling string_cache_codegen v0.4.2
[INFO] [stderr]    Compiling digest v0.8.0
[INFO] [stderr]    Compiling fixedbitset v0.1.9
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]    Compiling term v0.4.6
[INFO] [stderr]    Compiling either v1.5.0
[INFO] [stderr]    Compiling itertools v0.7.8
[INFO] [stderr]    Compiling petgraph v0.4.13
[INFO] [stderr]    Compiling sha2 v0.8.0
[INFO] [stderr]    Compiling string_cache v0.7.3
[INFO] [stderr]    Compiling ascii-canvas v1.0.0
[INFO] [stderr]    Compiling bit-set v0.5.0
[INFO] [stderr]    Compiling ena v0.10.1
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling lalrpop-util v0.16.1
[INFO] [stderr]    Compiling diff v0.1.11
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]    Compiling docopt v1.0.2
[INFO] [stderr]    Compiling lalrpop v0.16.1
[INFO] [stderr]    Compiling lucyrs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `lucyrs v0.1.0 (/opt/rustwide/workdir)`
[INFO] [stderr] note: To improve backtraces for build dependencies, set the CARGO_PROFILE_DEV_BUILD_OVERRIDE_DEBUG=true environment variable to enable debug information generation.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/lucyrs-d5c3f6083da54d3f/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   processing file `/opt/rustwide/workdir/src/lucy/grammar.lalrpop`
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' panicked at build.rs:7:10:
[INFO] [stderr]   called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x57e4b0968352 - std::backtrace_rs::backtrace::libunwind::trace::h0194d21b05d7c132
[INFO] [stderr]                                  at /rustc/5337252b9952fdd9482ed6a4add17254e5bd2c40/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x57e4b0968352 - std::backtrace_rs::backtrace::trace_unsynchronized::hcf33c41bd35b7780
[INFO] [stderr]                                  at /rustc/5337252b9952fdd9482ed6a4add17254e5bd2c40/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x57e4b0968352 - std::sys::backtrace::_print_fmt::hab8a641e82e0e7a4
[INFO] [stderr]                                  at /rustc/5337252b9952fdd9482ed6a4add17254e5bd2c40/library/std/src/sys/backtrace.rs:66:9
[INFO] [stderr]      3:     0x57e4b0968352 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h41e5ef2f502b506c
[INFO] [stderr]                                  at /rustc/5337252b9952fdd9482ed6a4add17254e5bd2c40/library/std/src/sys/backtrace.rs:39:26
[INFO] [stderr]      4:     0x57e4b0988a23 - core::fmt::rt::Argument::fmt::hb4808621bc6fd743
[INFO] [stderr]                                  at /rustc/5337252b9952fdd9482ed6a4add17254e5bd2c40/library/core/src/fmt/rt.rs:178:76
[INFO] [stderr]      5:     0x57e4b0988a23 - core::fmt::write::ha3562bb40a82763b
[INFO] [stderr]                                  at /rustc/5337252b9952fdd9482ed6a4add17254e5bd2c40/library/core/src/fmt/mod.rs:1480:21
[INFO] [stderr]      6:     0x57e4b0965423 - std::io::default_write_fmt::h961e2f4547b670d0
[INFO] [stderr]                                  at /rustc/5337252b9952fdd9482ed6a4add17254e5bd2c40/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x57e4b0965423 - std::io::Write::write_fmt::h04bfd19f54cc1d9e
[INFO] [stderr]                                  at /rustc/5337252b9952fdd9482ed6a4add17254e5bd2c40/library/std/src/io/mod.rs:1914:13
[INFO] [stderr]      8:     0x57e4b09681a2 - std::sys::backtrace::BacktraceLock::print::h7aeb6ec1e577627e
[INFO] [stderr]                                  at /rustc/5337252b9952fdd9482ed6a4add17254e5bd2c40/library/std/src/sys/backtrace.rs:42:9
[INFO] [stderr]      9:     0x57e4b0969632 - std::panicking::default_hook::{{closure}}::h6a712b30d33dd99b
[INFO] [stderr]                                  at /rustc/5337252b9952fdd9482ed6a4add17254e5bd2c40/library/std/src/panicking.rs:300:22
[INFO] [stderr]     10:     0x57e4b0969435 - std::panicking::default_hook::h17ec2cb877822fbe
[INFO] [stderr]                                  at /rustc/5337252b9952fdd9482ed6a4add17254e5bd2c40/library/std/src/panicking.rs:327:9
[INFO] [stderr]     11:     0x57e4b096a012 - std::panicking::rust_panic_with_hook::h48a05ae660d5a2f9
[INFO] [stderr]                                  at /rustc/5337252b9952fdd9482ed6a4add17254e5bd2c40/library/std/src/panicking.rs:833:13
[INFO] [stderr]     12:     0x57e4b0969d9a - std::panicking::begin_panic_handler::{{closure}}::h03cd2d6ae87e7edc
[INFO] [stderr]                                  at /rustc/5337252b9952fdd9482ed6a4add17254e5bd2c40/library/std/src/panicking.rs:706:13
[INFO] [stderr]     13:     0x57e4b0968859 - std::sys::backtrace::__rust_end_short_backtrace::hfd7ee488078bc2cf
[INFO] [stderr]                                  at /rustc/5337252b9952fdd9482ed6a4add17254e5bd2c40/library/std/src/sys/backtrace.rs:168:18
[INFO] [stderr]     14:     0x57e4b0969a2d - __rustc[41ea60b6562aef3d]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/5337252b9952fdd9482ed6a4add17254e5bd2c40/library/std/src/panicking.rs:697:5
[INFO] [stderr]     15:     0x57e4b0987180 - core::panicking::panic_fmt::h00faa7495ef249af
[INFO] [stderr]                                  at /rustc/5337252b9952fdd9482ed6a4add17254e5bd2c40/library/core/src/panicking.rs:75:14
[INFO] [stderr]     16:     0x57e4b09875e6 - core::result::unwrap_failed::h7d175e8373099225
[INFO] [stderr]                                  at /rustc/5337252b9952fdd9482ed6a4add17254e5bd2c40/library/core/src/result.rs:1704:5
[INFO] [stderr]     17:     0x57e4b047aaca - build_script_build::main::h31e0cafa710d2bca
[INFO] [stderr]     18:     0x57e4b047a793 - core::ops::function::FnOnce::call_once::h28135e1eeb474f47
[INFO] [stderr]     19:     0x57e4b047a776 - std::sys::backtrace::__rust_begin_short_backtrace::h73856dcd91d2ac25
[INFO] [stderr]     20:     0x57e4b047a759 - std::rt::lang_start::{{closure}}::h37a3a1ff56b36655
[INFO] [stderr]     21:     0x57e4b095fbe0 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::ha2a3560b7010632c
[INFO] [stderr]                                  at /rustc/5337252b9952fdd9482ed6a4add17254e5bd2c40/library/core/src/ops/function.rs:284:13
[INFO] [stderr]     22:     0x57e4b095fbe0 - std::panicking::try::do_call::ha54444048a4e5a07
[INFO] [stderr]                                  at /rustc/5337252b9952fdd9482ed6a4add17254e5bd2c40/library/std/src/panicking.rs:589:40
[INFO] [stderr]     23:     0x57e4b095fbe0 - std::panicking::try::hc039fcc5ba6dca89
[INFO] [stderr]                                  at /rustc/5337252b9952fdd9482ed6a4add17254e5bd2c40/library/std/src/panicking.rs:552:19
[INFO] [stderr]     24:     0x57e4b095fbe0 - std::panic::catch_unwind::h2fca6b0599be4576
[INFO] [stderr]                                  at /rustc/5337252b9952fdd9482ed6a4add17254e5bd2c40/library/std/src/panic.rs:359:14
[INFO] [stderr]     25:     0x57e4b095fbe0 - std::rt::lang_start_internal::{{closure}}::h194151d65b0a8611
[INFO] [stderr]                                  at /rustc/5337252b9952fdd9482ed6a4add17254e5bd2c40/library/std/src/rt.rs:168:24
[INFO] [stderr]     26:     0x57e4b095fbe0 - std::panicking::try::do_call::h6ba09735244ed109
[INFO] [stderr]                                  at /rustc/5337252b9952fdd9482ed6a4add17254e5bd2c40/library/std/src/panicking.rs:589:40
[INFO] [stderr]     27:     0x57e4b095fbe0 - std::panicking::try::h8e6c1f6af625dfbc
[INFO] [stderr]                                  at /rustc/5337252b9952fdd9482ed6a4add17254e5bd2c40/library/std/src/panicking.rs:552:19
[INFO] [stderr]     28:     0x57e4b095fbe0 - std::panic::catch_unwind::ha49435b213af1e04
[INFO] [stderr]                                  at /rustc/5337252b9952fdd9482ed6a4add17254e5bd2c40/library/std/src/panic.rs:359:14
[INFO] [stderr]     29:     0x57e4b095fbe0 - std::rt::lang_start_internal::hcaea9b83b94c1707
[INFO] [stderr]                                  at /rustc/5337252b9952fdd9482ed6a4add17254e5bd2c40/library/std/src/rt.rs:164:5
[INFO] [stderr]     30:     0x57e4b047a741 - std::rt::lang_start::h170bfc0486e64736
[INFO] [stderr]     31:     0x57e4b047ab55 - main
[INFO] [stderr]     32:     0x723f989311ca - <unknown>
[INFO] [stderr]     33:     0x723f9893128b - __libc_start_main
[INFO] [stderr]     34:     0x57e4b047a655 - _start
[INFO] [stderr]     35:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "e9ed1eb29d4b8a588411352e76ee98181ed7bea365196017f7483ce0a8c497fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9ed1eb29d4b8a588411352e76ee98181ed7bea365196017f7483ce0a8c497fe", kill_on_drop: false }`
[INFO] [stdout] e9ed1eb29d4b8a588411352e76ee98181ed7bea365196017f7483ce0a8c497fe