[INFO] cloning repository https://github.com/StappsWorld/Percival
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/StappsWorld/Percival" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FStappsWorld%2FPercival", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FStappsWorld%2FPercival'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3a45ce143716c6d5a3f55658b5d535d3e53a144c
[INFO] checking StappsWorld/Percival against try#7c3a44cf5f95fa5cf164a312bdcf845157af7093 for pr-77325
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FStappsWorld%2FPercival" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/StappsWorld/Percival on toolchain 7c3a44cf5f95fa5cf164a312bdcf845157af7093
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7c3a44cf5f95fa5cf164a312bdcf845157af7093" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/StappsWorld/Percival
[INFO] finished tweaking git repo https://github.com/StappsWorld/Percival
[INFO] tweaked toml for git repo https://github.com/StappsWorld/Percival written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/StappsWorld/Percival already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7c3a44cf5f95fa5cf164a312bdcf845157af7093" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded lalrpop v0.19.5
[INFO] [stderr]   Downloaded pico-args v0.4.2
[INFO] [stderr]   Downloaded lalrpop-util v0.19.5
[INFO] [stderr]   Downloaded ena v0.14.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+7c3a44cf5f95fa5cf164a312bdcf845157af7093" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 64bffab948bad26077b009117ed4d5b4a4cb736081a7c7ff275cfd99648b56f7
[INFO] running `Command { std: "docker" "start" "-a" "64bffab948bad26077b009117ed4d5b4a4cb736081a7c7ff275cfd99648b56f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "64bffab948bad26077b009117ed4d5b4a4cb736081a7c7ff275cfd99648b56f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64bffab948bad26077b009117ed4d5b4a4cb736081a7c7ff275cfd99648b56f7", kill_on_drop: false }`
[INFO] [stdout] 64bffab948bad26077b009117ed4d5b4a4cb736081a7c7ff275cfd99648b56f7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+7c3a44cf5f95fa5cf164a312bdcf845157af7093" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8529a1594106c82b45da3c36744591e716fe3a54a15d4fd49136e006388283e3
[INFO] running `Command { std: "docker" "start" "-a" "8529a1594106c82b45da3c36744591e716fe3a54a15d4fd49136e006388283e3", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling hashbrown v0.9.1
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling fixedbitset v0.2.0
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling pico-args v0.4.2
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]    Compiling string_cache v0.8.1
[INFO] [stderr]    Compiling itertools v0.10.0
[INFO] [stderr]    Compiling bit-set v0.5.2
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling ena v0.14.0
[INFO] [stderr]    Compiling term v0.5.2
[INFO] [stderr]    Compiling ascii-canvas v2.0.0
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling petgraph v0.5.1
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking lalrpop-util v0.19.5
[INFO] [stderr]    Compiling lalrpop v0.19.5
[INFO] [stderr]    Compiling percival v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `percival v0.1.0 (/opt/rustwide/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/percival-8aa2e8c933a87ab9/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   processing file `./src/parser/hc.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:     0x55abe452d950 - std::backtrace_rs::backtrace::libunwind::trace::h1037ca7e6eeef65c
[INFO] [stderr]                                  at /rustc/7c3a44cf5f95fa5cf164a312bdcf845157af7093/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stderr]      1:     0x55abe452d950 - std::backtrace_rs::backtrace::trace_unsynchronized::haaefac1bc3669450
[INFO] [stderr]                                  at /rustc/7c3a44cf5f95fa5cf164a312bdcf845157af7093/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x55abe452d950 - std::sys_common::backtrace::_print_fmt::h863a6f5e6d995885
[INFO] [stderr]                                  at /rustc/7c3a44cf5f95fa5cf164a312bdcf845157af7093/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x55abe452d950 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h767e17e1aa7df6a8
[INFO] [stderr]                                  at /rustc/7c3a44cf5f95fa5cf164a312bdcf845157af7093/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x55abe454ccdc - core::fmt::write::h7aa6cd0067dca82a
[INFO] [stderr]                                  at /rustc/7c3a44cf5f95fa5cf164a312bdcf845157af7093/library/core/src/fmt/mod.rs:1110:17
[INFO] [stderr]      5:     0x55abe452b275 - std::io::Write::write_fmt::h4c802b6f761026c1
[INFO] [stderr]                                  at /rustc/7c3a44cf5f95fa5cf164a312bdcf845157af7093/library/std/src/io/mod.rs:1584:15
[INFO] [stderr]      6:     0x55abe452f8cb - std::sys_common::backtrace::_print::h2769edb26a7eb606
[INFO] [stderr]                                  at /rustc/7c3a44cf5f95fa5cf164a312bdcf845157af7093/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x55abe452f8cb - std::sys_common::backtrace::print::ha71f3549862b4cb6
[INFO] [stderr]                                  at /rustc/7c3a44cf5f95fa5cf164a312bdcf845157af7093/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x55abe452f8cb - std::panicking::default_hook::{{closure}}::h95488a3bade217f6
[INFO] [stderr]                                  at /rustc/7c3a44cf5f95fa5cf164a312bdcf845157af7093/library/std/src/panicking.rs:208:50
[INFO] [stderr]      9:     0x55abe452f3a1 - std::panicking::default_hook::h290aa602c0fb11df
[INFO] [stderr]                                  at /rustc/7c3a44cf5f95fa5cf164a312bdcf845157af7093/library/std/src/panicking.rs:225:9
[INFO] [stderr]     10:     0x55abe452ff71 - std::panicking::rust_panic_with_hook::hf32c4fa635e215f2
[INFO] [stderr]                                  at /rustc/7c3a44cf5f95fa5cf164a312bdcf845157af7093/library/std/src/panicking.rs:622:17
[INFO] [stderr]     11:     0x55abe452fa77 - std::panicking::begin_panic_handler::{{closure}}::h95197ccd88846f7a
[INFO] [stderr]                                  at /rustc/7c3a44cf5f95fa5cf164a312bdcf845157af7093/library/std/src/panicking.rs:519:13
[INFO] [stderr]     12:     0x55abe452de2c - std::sys_common::backtrace::__rust_end_short_backtrace::h7641df9566f7b7d0
[INFO] [stderr]                                  at /rustc/7c3a44cf5f95fa5cf164a312bdcf845157af7093/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]     13:     0x55abe452f9d9 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/7c3a44cf5f95fa5cf164a312bdcf845157af7093/library/std/src/panicking.rs:515:5
[INFO] [stderr]     14:     0x55abe3cd2671 - core::panicking::panic_fmt::hbe99dddd3092ba3c
[INFO] [stderr]                                  at /rustc/7c3a44cf5f95fa5cf164a312bdcf845157af7093/library/core/src/panicking.rs:92:14
[INFO] [stderr]     15:     0x55abe3cd2763 - core::result::unwrap_failed::hf79563fef9d11ab8
[INFO] [stderr]                                  at /rustc/7c3a44cf5f95fa5cf164a312bdcf845157af7093/library/core/src/result.rs:1355:5
[INFO] [stderr]     16:     0x55abe3cd40a9 - core::result::Result<T,E>::unwrap::h19d60705ab23b6a5
[INFO] [stderr]                                  at /rustc/7c3a44cf5f95fa5cf164a312bdcf845157af7093/library/core/src/result.rs:1037:23
[INFO] [stderr]     17:     0x55abe3cd3959 - build_script_build::main::hac1521472ed23790
[INFO] [stderr]                                  at /opt/rustwide/workdir/build.rs:4:5
[INFO] [stderr]     18:     0x55abe3cd384b - core::ops::function::FnOnce::call_once::h2608ca781f544d16
[INFO] [stderr]                                  at /rustc/7c3a44cf5f95fa5cf164a312bdcf845157af7093/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     19:     0x55abe3cd36be - std::sys_common::backtrace::__rust_begin_short_backtrace::he1b2b2cb48f8322c
[INFO] [stderr]                                  at /rustc/7c3a44cf5f95fa5cf164a312bdcf845157af7093/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stderr]     20:     0x55abe3cd3f91 - std::rt::lang_start::{{closure}}::he7a695eead8d0945
[INFO] [stderr]                                  at /rustc/7c3a44cf5f95fa5cf164a312bdcf845157af7093/library/std/src/rt.rs:49:18
[INFO] [stderr]     21:     0x55abe4530469 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h04259e4a34d07c2f
[INFO] [stderr]                                  at /rustc/7c3a44cf5f95fa5cf164a312bdcf845157af7093/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     22:     0x55abe4530469 - std::panicking::try::do_call::hb8da45704d5cfbbf
[INFO] [stderr]                                  at /rustc/7c3a44cf5f95fa5cf164a312bdcf845157af7093/library/std/src/panicking.rs:401:40
[INFO] [stderr]     23:     0x55abe4530469 - std::panicking::try::h4beadc19a78fec52
[INFO] [stderr]                                  at /rustc/7c3a44cf5f95fa5cf164a312bdcf845157af7093/library/std/src/panicking.rs:365:19
[INFO] [stderr]     24:     0x55abe4530469 - std::panic::catch_unwind::hc58016cd36ba81a4
[INFO] [stderr]                                  at /rustc/7c3a44cf5f95fa5cf164a312bdcf845157af7093/library/std/src/panic.rs:433:14
[INFO] [stderr]     25:     0x55abe4530469 - std::rt::lang_start_internal::hc51399759a90501a
[INFO] [stderr]                                  at /rustc/7c3a44cf5f95fa5cf164a312bdcf845157af7093/library/std/src/rt.rs:34:21
[INFO] [stderr]     26:     0x55abe3cd3f70 - std::rt::lang_start::ha71b4bcd8fba3366
[INFO] [stderr]                                  at /rustc/7c3a44cf5f95fa5cf164a312bdcf845157af7093/library/std/src/rt.rs:48:5
[INFO] [stderr]     27:     0x55abe3cd399c - main
[INFO] [stderr]     28:     0x7efe05f820b3 - __libc_start_main
[INFO] [stderr]     29:     0x55abe3cd2e6e - _start
[INFO] [stderr]     30:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "8529a1594106c82b45da3c36744591e716fe3a54a15d4fd49136e006388283e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8529a1594106c82b45da3c36744591e716fe3a54a15d4fd49136e006388283e3", kill_on_drop: false }`
[INFO] [stdout] 8529a1594106c82b45da3c36744591e716fe3a54a15d4fd49136e006388283e3