[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 try#353a0a223066e9f46a1d935f2271a26c3c5002bb for pr-75180
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fojhunt%2Fcircuits" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ojhunt/circuits on toolchain 353a0a223066e9f46a1d935f2271a26c3c5002bb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+353a0a223066e9f46a1d935f2271a26c3c5002bb" "read-manifest" "--manifest-path" "Cargo.toml", 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-4/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" "+353a0a223066e9f46a1d935f2271a26c3c5002bb" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded string_cache_codegen v0.4.4
[INFO] [stderr]   Downloaded blake2b_simd v0.5.8
[INFO] [stderr]   Downloaded lalrpop-util v0.17.2
[INFO] [stderr]   Downloaded lalrpop v0.17.2
[INFO] [stderr]   Downloaded proc-macro2 v1.0.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+353a0a223066e9f46a1d935f2271a26c3c5002bb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a9f35a837ff0182b6a2fb75e93549b585de55ae70927a05e4c87b9edc032b68e
[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" "a9f35a837ff0182b6a2fb75e93549b585de55ae70927a05e4c87b9edc032b68e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a9f35a837ff0182b6a2fb75e93549b585de55ae70927a05e4c87b9edc032b68e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9f35a837ff0182b6a2fb75e93549b585de55ae70927a05e4c87b9edc032b68e", kill_on_drop: false }`
[INFO] [stdout] a9f35a837ff0182b6a2fb75e93549b585de55ae70927a05e4c87b9edc032b68e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+353a0a223066e9f46a1d935f2271a26c3c5002bb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7f0c46e8ccdaa605781fafc97119c86efc0400531998253dd8698341e90d40b0
[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" "7f0c46e8ccdaa605781fafc97119c86efc0400531998253dd8698341e90d40b0", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v0.1.6
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling serde v1.0.101
[INFO] [stderr]    Compiling lalrpop-util v0.17.2
[INFO] [stderr]    Compiling itertools v0.8.0
[INFO] [stderr]    Compiling block-padding v0.1.4
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.4
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling ena v0.13.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling generic-array v0.12.3
[INFO] [stderr]     Checking aho-corasick v0.7.6
[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 term v0.5.2
[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 ascii-canvas v2.0.0
[INFO] [stderr]     Checking regex v1.3.1
[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 serde_derive 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-0ad222e5b0526185/build-script-build` (exit code: 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:     0x55bb802f342f - std::backtrace_rs::backtrace::libunwind::trace::h21c0966c343fddd8
[INFO] [stderr]                                  at /rustc/353a0a223066e9f46a1d935f2271a26c3c5002bb/library/std/src/../../backtrace/src/backtrace/libunwind.rs:96
[INFO] [stderr]      1:     0x55bb802f342f - std::backtrace_rs::backtrace::trace_unsynchronized::h62cde0754779ae3a
[INFO] [stderr]                                  at /rustc/353a0a223066e9f46a1d935f2271a26c3c5002bb/library/std/src/../../backtrace/src/backtrace/mod.rs:66
[INFO] [stderr]      2:     0x55bb802f342f - std::sys_common::backtrace::_print_fmt::hb2d70198918acf1c
[INFO] [stderr]                                  at /rustc/353a0a223066e9f46a1d935f2271a26c3c5002bb/library/std/src/sys_common/backtrace.rs:77
[INFO] [stderr]      3:     0x55bb802f342f - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h5a9d4ddd4d99b877
[INFO] [stderr]                                  at /rustc/353a0a223066e9f46a1d935f2271a26c3c5002bb/library/std/src/sys_common/backtrace.rs:58
[INFO] [stderr]      4:     0x55bb8031355c - core::fmt::write::h3a043650ba7bf668
[INFO] [stderr]                                  at /rustc/353a0a223066e9f46a1d935f2271a26c3c5002bb/library/core/src/fmt/mod.rs:1117
[INFO] [stderr]      5:     0x55bb802f0785 - std::io::Write::write_fmt::h2dbf1bb0d9f42142
[INFO] [stderr]                                  at /rustc/353a0a223066e9f46a1d935f2271a26c3c5002bb/library/std/src/io/mod.rs:1510
[INFO] [stderr]      6:     0x55bb802f59d0 - std::sys_common::backtrace::_print::h1091565a54a3c462
[INFO] [stderr]                                  at /rustc/353a0a223066e9f46a1d935f2271a26c3c5002bb/library/std/src/sys_common/backtrace.rs:61
[INFO] [stderr]      7:     0x55bb802f59d0 - std::sys_common::backtrace::print::hc9759e13a502cda2
[INFO] [stderr]                                  at /rustc/353a0a223066e9f46a1d935f2271a26c3c5002bb/library/std/src/sys_common/backtrace.rs:48
[INFO] [stderr]      8:     0x55bb802f59d0 - std::panicking::default_hook::{{closure}}::hd35b8516a1d88160
[INFO] [stderr]                                  at /rustc/353a0a223066e9f46a1d935f2271a26c3c5002bb/library/std/src/panicking.rs:198
[INFO] [stderr]      9:     0x55bb802f571c - std::panicking::default_hook::h0dcf88ad4d72ec5e
[INFO] [stderr]                                  at /rustc/353a0a223066e9f46a1d935f2271a26c3c5002bb/library/std/src/panicking.rs:217
[INFO] [stderr]     10:     0x55bb802f6013 - std::panicking::rust_panic_with_hook::h81c308f7accbe523
[INFO] [stderr]                                  at /rustc/353a0a223066e9f46a1d935f2271a26c3c5002bb/library/std/src/panicking.rs:526
[INFO] [stderr]     11:     0x55bb802f5c0b - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/353a0a223066e9f46a1d935f2271a26c3c5002bb/library/std/src/panicking.rs:437
[INFO] [stderr]     12:     0x55bb80311c11 - core::panicking::panic_fmt::h019ad16a92ccd092
[INFO] [stderr]                                  at /rustc/353a0a223066e9f46a1d935f2271a26c3c5002bb/library/core/src/panicking.rs:85
[INFO] [stderr]     13:     0x55bb80311a33 - core::option::expect_none_failed::h7135ba2fdb185931
[INFO] [stderr]                                  at /rustc/353a0a223066e9f46a1d935f2271a26c3c5002bb/library/core/src/option.rs:1274
[INFO] [stderr]     14:     0x55bb7fa5f543 - core::result::Result<T,E>::unwrap::h7bd4aecc5f9d06bd
[INFO] [stderr]                                  at /rustc/353a0a223066e9f46a1d935f2271a26c3c5002bb/library/core/src/result.rs:1005
[INFO] [stderr]     15:     0x55bb7fa5f5f3 - build_script_build::main::hb05439393c5a3a8b
[INFO] [stderr]                                  at /opt/rustwide/workdir/build.rs:4
[INFO] [stderr]     16:     0x55bb7fa5f7bb - std::rt::lang_start::{{closure}}::hf2ecf1e311a48b34
[INFO] [stderr]                                  at /rustc/353a0a223066e9f46a1d935f2271a26c3c5002bb/library/std/src/rt.rs:67
[INFO] [stderr]     17:     0x55bb802f6426 - std::rt::lang_start_internal::{{closure}}::hdb90dc0481c9e8f6
[INFO] [stderr]                                  at /rustc/353a0a223066e9f46a1d935f2271a26c3c5002bb/library/std/src/rt.rs:52
[INFO] [stderr]     18:     0x55bb802f6426 - std::panicking::try::do_call::he0af14a67f26ea71
[INFO] [stderr]                                  at /rustc/353a0a223066e9f46a1d935f2271a26c3c5002bb/library/std/src/panicking.rs:348
[INFO] [stderr]     19:     0x55bb802f6426 - std::panicking::try::h87d5f0e2c2fee1c5
[INFO] [stderr]                                  at /rustc/353a0a223066e9f46a1d935f2271a26c3c5002bb/library/std/src/panicking.rs:325
[INFO] [stderr]     20:     0x55bb802f6426 - std::panic::catch_unwind::he9266eec484f0287
[INFO] [stderr]                                  at /rustc/353a0a223066e9f46a1d935f2271a26c3c5002bb/library/std/src/panic.rs:394
[INFO] [stderr]     21:     0x55bb802f6426 - std::rt::lang_start_internal::hb54283a40e32dc37
[INFO] [stderr]                                  at /rustc/353a0a223066e9f46a1d935f2271a26c3c5002bb/library/std/src/rt.rs:51
[INFO] [stderr]     22:     0x55bb7fa5f797 - std::rt::lang_start::h6ada23b8bcbb34c5
[INFO] [stderr]                                  at /rustc/353a0a223066e9f46a1d935f2271a26c3c5002bb/library/std/src/rt.rs:67
[INFO] [stderr]     23:     0x55bb7fa5f64a - main
[INFO] [stderr]     24:     0x7ff28146d0b3 - __libc_start_main
[INFO] [stderr]     25:     0x55bb7fa5f0ce - _start
[INFO] [stderr]     26:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "7f0c46e8ccdaa605781fafc97119c86efc0400531998253dd8698341e90d40b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f0c46e8ccdaa605781fafc97119c86efc0400531998253dd8698341e90d40b0", kill_on_drop: false }`
[INFO] [stdout] 7f0c46e8ccdaa605781fafc97119c86efc0400531998253dd8698341e90d40b0