[INFO] cloning repository https://github.com/ojhunt/circuits
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ojhunt/circuits" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fojhunt%2Fcircuits", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fojhunt%2Fcircuits'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ae4b4558583c77da5a13b67dd10e304618aca6c1
[INFO] checking ojhunt/circuits against master#a836d9b6413d9d593be6c09463ff8c4c70e56599 for pr-84037
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fojhunt%2Fcircuits" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ojhunt/circuits on toolchain a836d9b6413d9d593be6c09463ff8c4c70e56599
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ojhunt/circuits
[INFO] removed 1 missing examples
[INFO] finished tweaking git repo https://github.com/ojhunt/circuits
[INFO] tweaked toml for git repo https://github.com/ojhunt/circuits written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/ojhunt/circuits already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "fetch" "--locked" "--manifest-path" "Cargo.toml", 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 40bf96b2534609ab745d1ee513bc0b1dcdb114d3786acc1bc0783247f060967e
[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" "40bf96b2534609ab745d1ee513bc0b1dcdb114d3786acc1bc0783247f060967e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "40bf96b2534609ab745d1ee513bc0b1dcdb114d3786acc1bc0783247f060967e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40bf96b2534609ab745d1ee513bc0b1dcdb114d3786acc1bc0783247f060967e", kill_on_drop: false }`
[INFO] [stdout] 40bf96b2534609ab745d1ee513bc0b1dcdb114d3786acc1bc0783247f060967e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aa4bfef07581d64deedaa81ee175d871848228fc368de41dfe8765e735df39c4
[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" "aa4bfef07581d64deedaa81ee175d871848228fc368de41dfe8765e735df39c4", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling byte-tools v0.3.1
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling regex-syntax v0.6.12
[INFO] [stderr]    Compiling fixedbitset v0.1.9
[INFO] [stderr]    Compiling strsim v0.9.2
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling bit-vec v0.5.1
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.3
[INFO] [stderr]    Compiling fake-simd v0.1.2
[INFO] [stderr]    Compiling ordermap v0.3.5
[INFO] [stderr]    Compiling opaque-debug v0.2.3
[INFO] [stderr]    Compiling diff v0.1.11
[INFO] [stderr]    Compiling lalrpop-util v0.17.2
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling block-padding v0.1.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.4
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling itertools v0.8.0
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling bit-set v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling petgraph v0.4.13
[INFO] [stderr]    Compiling term v0.5.2
[INFO] [stderr]    Compiling ena v0.13.1
[INFO] [stderr]    Compiling aho-corasick v0.7.6
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling generic-array v0.12.3
[INFO] [stderr]    Compiling ascii-canvas v2.0.0
[INFO] [stderr]    Compiling digest v0.8.1
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling sha2 v0.8.0
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling string_cache_codegen v0.4.4
[INFO] [stderr]    Compiling string_cache v0.7.3
[INFO] [stderr]    Compiling regex v1.3.1
[INFO] [stderr]    Compiling serde_derive v1.0.101
[INFO] [stderr]    Compiling serde v1.0.101
[INFO] [stderr]    Compiling docopt v1.1.0
[INFO] [stderr]    Compiling lalrpop v0.17.2
[INFO] [stderr]    Compiling waffle_sim v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `waffle_sim v0.1.0 (/opt/rustwide/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/waffle_sim-ee3efd1047d564d9/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   processing file `./src/parser/circuit_parser.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:     0x55714469fb80 - std::backtrace_rs::backtrace::libunwind::trace::h247d9dc800afe0ad
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stderr]      1:     0x55714469fb80 - std::backtrace_rs::backtrace::trace_unsynchronized::h9a4153306adf486c
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x55714469fb80 - std::sys_common::backtrace::_print_fmt::h1ac8daa5000ee24c
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x55714469fb80 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h22a8e55d2cc5363a
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x5571446bfa9f - core::fmt::write::h7aa6cd0067dca82a
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/core/src/fmt/mod.rs:1094:17
[INFO] [stderr]      5:     0x55714469d2e5 - std::io::Write::write_fmt::h441a47830651073b
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/std/src/io/mod.rs:1580:15
[INFO] [stderr]      6:     0x5571446a1a0b - std::sys_common::backtrace::_print::hd1e0ee1c195f9f05
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x5571446a1a0b - std::sys_common::backtrace::print::h7d1098def5c25d20
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x5571446a1a0b - std::panicking::default_hook::{{closure}}::h484b8b15967e42c8
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/std/src/panicking.rs:208:50
[INFO] [stderr]      9:     0x5571446a14ed - std::panicking::default_hook::h82c79ca49716b79d
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/std/src/panicking.rs:225:9
[INFO] [stderr]     10:     0x5571446a1fbd - std::panicking::rust_panic_with_hook::h6df253a3c973d6b6
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/std/src/panicking.rs:591:17
[INFO] [stderr]     11:     0x5571446a1bb7 - std::panicking::begin_panic_handler::{{closure}}::hc6a4120674935ea3
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/std/src/panicking.rs:497:13
[INFO] [stderr]     12:     0x5571446a003c - std::sys_common::backtrace::__rust_end_short_backtrace::h9b5f057c8351b0b1
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]     13:     0x5571446a1b19 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/std/src/panicking.rs:493:5
[INFO] [stderr]     14:     0x557143e6b411 - core::panicking::panic_fmt::hbe99dddd3092ba3c
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/core/src/panicking.rs:92:14
[INFO] [stderr]     15:     0x557143e6b503 - core::result::unwrap_failed::hf79563fef9d11ab8
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/core/src/result.rs:1355:5
[INFO] [stderr]     16:     0x557143e6beb0 - core::result::Result<T,E>::unwrap::h924ded1845f06d4e
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/core/src/result.rs:1037:23
[INFO] [stderr]     17:     0x557143e6bf9e - build_script_build::main::hcd17511c15730a97
[INFO] [stderr]                                  at /opt/rustwide/workdir/build.rs:4:5
[INFO] [stderr]     18:     0x557143e6c28b - core::ops::function::FnOnce::call_once::h1bc4b36f5a14e525
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     19:     0x557143e6befe - std::sys_common::backtrace::__rust_begin_short_backtrace::hf89f1ed917d41348
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stderr]     20:     0x557143e6be31 - std::rt::lang_start::{{closure}}::h8261c582f01cee33
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/std/src/rt.rs:66:18
[INFO] [stderr]     21:     0x5571446a23ba - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h98fbc5823393ca6f
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     22:     0x5571446a23ba - std::panicking::try::do_call::h210d0709dd1d5fd6
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/std/src/panicking.rs:379:40
[INFO] [stderr]     23:     0x5571446a23ba - std::panicking::try::hc60c2c01c5cf7473
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/std/src/panicking.rs:343:19
[INFO] [stderr]     24:     0x5571446a23ba - std::panic::catch_unwind::h7480a56877b30ca9
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/std/src/panic.rs:431:14
[INFO] [stderr]     25:     0x5571446a23ba - std::rt::lang_start_internal::he77194431b0ee4a2
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/std/src/rt.rs:51:25
[INFO] [stderr]     26:     0x557143e6be10 - std::rt::lang_start::hb205ab2108e1296d
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/std/src/rt.rs:65:5
[INFO] [stderr]     27:     0x557143e6c00c - main
[INFO] [stderr]     28:     0x7f6ceb50e0b3 - __libc_start_main
[INFO] [stderr]     29:     0x557143e6bbae - _start
[INFO] [stderr]     30:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "aa4bfef07581d64deedaa81ee175d871848228fc368de41dfe8765e735df39c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa4bfef07581d64deedaa81ee175d871848228fc368de41dfe8765e735df39c4", kill_on_drop: false }`
[INFO] [stdout] aa4bfef07581d64deedaa81ee175d871848228fc368de41dfe8765e735df39c4