[INFO] cloning repository https://github.com/Emoun/unsafe-lang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Emoun/unsafe-lang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEmoun%2Funsafe-lang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEmoun%2Funsafe-lang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a207b1023bc8f373269d77ff471edef202877714
[INFO] checking Emoun/unsafe-lang against master#6526e5c772f2da07db745c94ca6bb0a591a39ba4 for pr-80920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEmoun%2Funsafe-lang" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Emoun/unsafe-lang on toolchain 6526e5c772f2da07db745c94ca6bb0a591a39ba4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Emoun/unsafe-lang
[INFO] finished tweaking git repo https://github.com/Emoun/unsafe-lang
[INFO] tweaked toml for git repo https://github.com/Emoun/unsafe-lang written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/Emoun/unsafe-lang already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 52900c880f02fc3926688a0d6fa54305637d14de729e8e8b62a2f233027cce51
[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" "52900c880f02fc3926688a0d6fa54305637d14de729e8e8b62a2f233027cce51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "52900c880f02fc3926688a0d6fa54305637d14de729e8e8b62a2f233027cce51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52900c880f02fc3926688a0d6fa54305637d14de729e8e8b62a2f233027cce51", kill_on_drop: false }`
[INFO] [stdout] 52900c880f02fc3926688a0d6fa54305637d14de729e8e8b62a2f233027cce51
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4146001140d40dcf9c0c6319cda1209129c59e094e04e66f8df65702ea079b16
[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" "4146001140d40dcf9c0c6319cda1209129c59e094e04e66f8df65702ea079b16", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.30
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling lazy_static v0.2.8
[INFO] [stderr]    Compiling utf8-ranges v1.0.0
[INFO] [stderr]    Compiling regex-syntax v0.4.1
[INFO] [stderr]    Compiling bit-vec v0.4.4
[INFO] [stderr]    Compiling fixedbitset v0.1.7
[INFO] [stderr]    Compiling ordermap v0.2.11
[INFO] [stderr]    Compiling term v0.4.6
[INFO] [stderr]    Compiling either v1.1.0
[INFO] [stderr]    Compiling strsim v0.6.0
[INFO] [stderr]    Compiling lalrpop-intern v0.13.1
[INFO] [stderr]    Compiling diff v0.1.10
[INFO] [stderr]    Compiling ena v0.5.0
[INFO] [stderr]    Compiling lalrpop-util v0.13.1
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]    Compiling itertools v0.5.10
[INFO] [stderr]    Compiling bit-set v0.4.0
[INFO] [stderr]    Compiling thread_local v0.3.4
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling petgraph v0.4.5
[INFO] [stderr]    Compiling ascii-canvas v1.0.0
[INFO] [stderr]    Compiling memchr v1.0.1
[INFO] [stderr]    Compiling aho-corasick v0.6.3
[INFO] [stderr]    Compiling atty v0.1.2
[INFO] [stderr]     Checking regex v0.2.2
[INFO] [stderr]    Compiling docopt v0.7.0
[INFO] [stderr]    Compiling lalrpop-snap v0.13.1
[INFO] [stderr]    Compiling lalrpop v0.13.1
[INFO] [stderr] error: failed to run custom build command for `lalrpop v0.13.1`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/lalrpop-f55723ddfc5f3164/build-script-build` (exit code: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   processing file `/opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lalrpop-0.13.1/src/parser/lrgrammar.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" }', /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lalrpop-0.13.1/build.rs:4:34
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x559022c7b1b7 - std::backtrace_rs::backtrace::libunwind::trace::h8bc78f7bc1f75bdb
[INFO] [stderr]                                  at /rustc/6526e5c772f2da07db745c94ca6bb0a591a39ba4/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stderr]      1:     0x559022c7b1b7 - std::backtrace_rs::backtrace::trace_unsynchronized::ha4c961c9576f95ba
[INFO] [stderr]                                  at /rustc/6526e5c772f2da07db745c94ca6bb0a591a39ba4/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x559022c7b1b7 - std::sys_common::backtrace::_print_fmt::hc20cfdc233d6eb02
[INFO] [stderr]                                  at /rustc/6526e5c772f2da07db745c94ca6bb0a591a39ba4/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x559022c7b1b7 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h04bea14549780a0f
[INFO] [stderr]                                  at /rustc/6526e5c772f2da07db745c94ca6bb0a591a39ba4/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x559022c9808c - core::fmt::write::h3868db8542c90941
[INFO] [stderr]                                  at /rustc/6526e5c772f2da07db745c94ca6bb0a591a39ba4/library/core/src/fmt/mod.rs:1078:17
[INFO] [stderr]      5:     0x559022c77f12 - std::io::Write::write_fmt::h55dd75636eef6a5c
[INFO] [stderr]                                  at /rustc/6526e5c772f2da07db745c94ca6bb0a591a39ba4/library/std/src/io/mod.rs:1518:15
[INFO] [stderr]      6:     0x559022c7d155 - std::sys_common::backtrace::_print::h6439e8525077c7da
[INFO] [stderr]                                  at /rustc/6526e5c772f2da07db745c94ca6bb0a591a39ba4/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x559022c7d155 - std::sys_common::backtrace::print::h02b685f728ce3931
[INFO] [stderr]                                  at /rustc/6526e5c772f2da07db745c94ca6bb0a591a39ba4/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x559022c7d155 - std::panicking::default_hook::{{closure}}::h7c29625065fafae1
[INFO] [stderr]                                  at /rustc/6526e5c772f2da07db745c94ca6bb0a591a39ba4/library/std/src/panicking.rs:208:50
[INFO] [stderr]      9:     0x559022c7ccb3 - std::panicking::default_hook::hba441710bb71f4d5
[INFO] [stderr]                                  at /rustc/6526e5c772f2da07db745c94ca6bb0a591a39ba4/library/std/src/panicking.rs:225:9
[INFO] [stderr]     10:     0x559022c7d8f1 - std::panicking::rust_panic_with_hook::ha936eb00e51bc4d9
[INFO] [stderr]                                  at /rustc/6526e5c772f2da07db745c94ca6bb0a591a39ba4/library/std/src/panicking.rs:591:17
[INFO] [stderr]     11:     0x559022c7d437 - std::panicking::begin_panic_handler::{{closure}}::hcd15140e0238536e
[INFO] [stderr]                                  at /rustc/6526e5c772f2da07db745c94ca6bb0a591a39ba4/library/std/src/panicking.rs:497:13
[INFO] [stderr]     12:     0x559022c7b67c - std::sys_common::backtrace::__rust_end_short_backtrace::hb13a021bb64823a1
[INFO] [stderr]                                  at /rustc/6526e5c772f2da07db745c94ca6bb0a591a39ba4/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]     13:     0x559022c7d399 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/6526e5c772f2da07db745c94ca6bb0a591a39ba4/library/std/src/panicking.rs:493:5
[INFO] [stderr]     14:     0x559022c96761 - core::panicking::panic_fmt::h20225113c4a2f8fd
[INFO] [stderr]                                  at /rustc/6526e5c772f2da07db745c94ca6bb0a591a39ba4/library/core/src/panicking.rs:92:14
[INFO] [stderr]     15:     0x559022c96583 - core::option::expect_none_failed::hc6d6d4cea4fdc285
[INFO] [stderr]                                  at /rustc/6526e5c772f2da07db745c94ca6bb0a591a39ba4/library/core/src/option.rs:1266:5
[INFO] [stderr]     16:     0x5590224e72b3 - core::result::Result<T,E>::unwrap::h551e682df46ccba2
[INFO] [stderr]                                  at /rustc/6526e5c772f2da07db745c94ca6bb0a591a39ba4/library/core/src/result.rs:969:23
[INFO] [stderr]     17:     0x5590224e734d - build_script_build::main::h2fc5876529f4e3ad
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lalrpop-0.13.1/build.rs:4:5
[INFO] [stderr]     18:     0x5590224e723b - core::ops::function::FnOnce::call_once::he0b944fde1ce5c51
[INFO] [stderr]                                  at /rustc/6526e5c772f2da07db745c94ca6bb0a591a39ba4/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     19:     0x5590224e739e - std::sys_common::backtrace::__rust_begin_short_backtrace::h3bdfcc8b3d56218a
[INFO] [stderr]                                  at /rustc/6526e5c772f2da07db745c94ca6bb0a591a39ba4/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stderr]     20:     0x5590224e7441 - std::rt::lang_start::{{closure}}::h5aa38daf0ea41173
[INFO] [stderr]                                  at /rustc/6526e5c772f2da07db745c94ca6bb0a591a39ba4/library/std/src/rt.rs:66:18
[INFO] [stderr]     21:     0x559022c7dd17 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h7c92107c3c98a949
[INFO] [stderr]                                  at /rustc/6526e5c772f2da07db745c94ca6bb0a591a39ba4/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     22:     0x559022c7dd17 - std::panicking::try::do_call::h7454c57e8fbf0cc1
[INFO] [stderr]                                  at /rustc/6526e5c772f2da07db745c94ca6bb0a591a39ba4/library/std/src/panicking.rs:379:40
[INFO] [stderr]     23:     0x559022c7dd17 - std::panicking::try::he71cdc15ed83b5ec
[INFO] [stderr]                                  at /rustc/6526e5c772f2da07db745c94ca6bb0a591a39ba4/library/std/src/panicking.rs:343:19
[INFO] [stderr]     24:     0x559022c7dd17 - std::panic::catch_unwind::hfc08ddb043e6e18c
[INFO] [stderr]                                  at /rustc/6526e5c772f2da07db745c94ca6bb0a591a39ba4/library/std/src/panic.rs:396:14
[INFO] [stderr]     25:     0x559022c7dd17 - std::rt::lang_start_internal::he4958117ec6901fd
[INFO] [stderr]                                  at /rustc/6526e5c772f2da07db745c94ca6bb0a591a39ba4/library/std/src/rt.rs:51:25
[INFO] [stderr]     26:     0x5590224e7417 - std::rt::lang_start::h73763104c407edf1
[INFO] [stderr]                                  at /rustc/6526e5c772f2da07db745c94ca6bb0a591a39ba4/library/std/src/rt.rs:65:5
[INFO] [stderr]     27:     0x5590224e738a - main
[INFO] [stderr]     28:     0x7f253c12c0b3 - __libc_start_main
[INFO] [stderr]     29:     0x5590224e70ce - _start
[INFO] [stderr]     30:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "4146001140d40dcf9c0c6319cda1209129c59e094e04e66f8df65702ea079b16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4146001140d40dcf9c0c6319cda1209129c59e094e04e66f8df65702ea079b16", kill_on_drop: false }`
[INFO] [stdout] 4146001140d40dcf9c0c6319cda1209129c59e094e04e66f8df65702ea079b16