[INFO] cloning repository https://github.com/ahmedsakr/pretty-ls
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ahmedsakr/pretty-ls" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fahmedsakr%2Fpretty-ls", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fahmedsakr%2Fpretty-ls'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c991e3858126868a0706b8165f66bbc7900ca070
[INFO] checking ahmedsakr/pretty-ls against try#c3491e21996dc67a8e37d9e5e74ed156563e9854 for pr-101345
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fahmedsakr%2Fpretty-ls" "/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/ahmedsakr/pretty-ls on toolchain c3491e21996dc67a8e37d9e5e74ed156563e9854
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c3491e21996dc67a8e37d9e5e74ed156563e9854" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ahmedsakr/pretty-ls
[INFO] finished tweaking git repo https://github.com/ahmedsakr/pretty-ls
[INFO] tweaked toml for git repo https://github.com/ahmedsakr/pretty-ls written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/ahmedsakr/pretty-ls already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c3491e21996dc67a8e37d9e5e74ed156563e9854" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+c3491e21996dc67a8e37d9e5e74ed156563e9854" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6c1c08ce44242f455f8a12ca43f4b8cda39fdad13568622ca07ba397918960e2
[INFO] running `Command { std: "docker" "start" "-a" "6c1c08ce44242f455f8a12ca43f4b8cda39fdad13568622ca07ba397918960e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6c1c08ce44242f455f8a12ca43f4b8cda39fdad13568622ca07ba397918960e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c1c08ce44242f455f8a12ca43f4b8cda39fdad13568622ca07ba397918960e2", kill_on_drop: false }`
[INFO] [stdout] 6c1c08ce44242f455f8a12ca43f4b8cda39fdad13568622ca07ba397918960e2
[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" "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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+c3491e21996dc67a8e37d9e5e74ed156563e9854" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1df3222e99114ae879395caf3825ab97a5cdcd0237a7cb5dfa04963f19de7dbd
[INFO] running `Command { std: "docker" "start" "-a" "1df3222e99114ae879395caf3825ab97a5cdcd0237a7cb5dfa04963f19de7dbd", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.21
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling syn v1.0.41
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr] error: failed to run custom build command for `libc v0.2.77`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/libc-84ebf59eb9e2cd1d/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at 'Failed to get rustc version', /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libc-0.2.77/build.rs:7:31
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x5595b08f4990 - std::backtrace_rs::backtrace::libunwind::trace::h6176bf60b78d74d6
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      1:     0x5595b08f4990 - std::backtrace_rs::backtrace::trace_unsynchronized::h5d22932bd33ba306
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x5595b08f4990 - std::sys_common::backtrace::_print_fmt::h91ed71259c388db3
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/sys_common/backtrace.rs:66:5
[INFO] [stderr]      3:     0x5595b08f4990 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hde15bb8cbf7665da
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/sys_common/backtrace.rs:45:22
[INFO] [stderr]      4:     0x5595b0911b2e - core::fmt::write::h9761a5598d7cc269
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/core/src/fmt/mod.rs:1202:17
[INFO] [stderr]      5:     0x5595b08f1c45 - std::io::Write::write_fmt::h26becaaa3f318825
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/io/mod.rs:1679:15
[INFO] [stderr]      6:     0x5595b08f60c3 - std::sys_common::backtrace::_print::hc10fefd61e366dd2
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/sys_common/backtrace.rs:48:5
[INFO] [stderr]      7:     0x5595b08f60c3 - std::sys_common::backtrace::print::hd8c846072a354bbf
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/sys_common/backtrace.rs:35:9
[INFO] [stderr]      8:     0x5595b08f60c3 - std::panicking::default_hook::{{closure}}::haa135eeb0555cd8c
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/panicking.rs:295:22
[INFO] [stderr]      9:     0x5595b08f5daf - std::panicking::default_hook::h962e5f45e4e85804
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/panicking.rs:314:9
[INFO] [stderr]     10:     0x5595b08f676a - std::panicking::rust_panic_with_hook::h26097f8ccbe406f2
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/panicking.rs:698:17
[INFO] [stderr]     11:     0x5595b08f6667 - std::panicking::begin_panic_handler::{{closure}}::hc0f865aa1bb60c7c
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/panicking.rs:588:13
[INFO] [stderr]     12:     0x5595b08f4eac - std::sys_common::backtrace::__rust_end_short_backtrace::h6d4dc99be6f721b8
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/sys_common/backtrace.rs:138:18
[INFO] [stderr]     13:     0x5595b08f6382 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/panicking.rs:584:5
[INFO] [stderr]     14:     0x5595b08cf9c3 - core::panicking::panic_fmt::h4db8cd7388285b2c
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/core/src/panicking.rs:142:14
[INFO] [stderr]     15:     0x5595b0910dd1 - core::panicking::panic_display::he73fdc935bdf497e
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/core/src/panicking.rs:72:5
[INFO] [stderr]     16:     0x5595b0910d7b - core::panicking::panic_str::hb5cde10995c7cdaf
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/core/src/panicking.rs:56:5
[INFO] [stderr]     17:     0x5595b08cf836 - core::option::expect_failed::h659f87154acb3c68
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/core/src/option.rs:1880:5
[INFO] [stderr]     18:     0x5595b08d16d2 - core::option::Option<T>::expect::h2cea858c0aba2ee2
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/core/src/option.rs:738:21
[INFO] [stderr]     19:     0x5595b08d78d7 - build_script_build::main::hcf83b1fcd671ab0a
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libc-0.2.77/build.rs:7:9
[INFO] [stderr]     20:     0x5595b08d98ab - core::ops::function::FnOnce::call_once::h8683a67163915089
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/core/src/ops/function.rs:248:5
[INFO] [stderr]     21:     0x5595b08d95be - std::sys_common::backtrace::__rust_begin_short_backtrace::he061d343686c6386
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/sys_common/backtrace.rs:122:18
[INFO] [stderr]     22:     0x5595b08d3821 - std::rt::lang_start::{{closure}}::h769ef5e5eb52f794
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/rt.rs:166:18
[INFO] [stderr]     23:     0x5595b08ef26f - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::he95ed81489502271
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/core/src/ops/function.rs:280:13
[INFO] [stderr]     24:     0x5595b08ef26f - std::panicking::try::do_call::h0a45e27c5ac7207a
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/panicking.rs:492:40
[INFO] [stderr]     25:     0x5595b08ef26f - std::panicking::try::h032b7145e06b96dd
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/panicking.rs:456:19
[INFO] [stderr]     26:     0x5595b08ef26f - std::panic::catch_unwind::hcb3762214531769d
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/panic.rs:137:14
[INFO] [stderr]     27:     0x5595b08ef26f - std::rt::lang_start_internal::{{closure}}::h49ed99b9e279c5c0
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/rt.rs:148:48
[INFO] [stderr]     28:     0x5595b08ef26f - std::panicking::try::do_call::hd4e312809bc805d8
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/panicking.rs:492:40
[INFO] [stderr]     29:     0x5595b08ef26f - std::panicking::try::hdb45bd293875ea13
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/panicking.rs:456:19
[INFO] [stderr]     30:     0x5595b08ef26f - std::panic::catch_unwind::h429997a205aa583a
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/panic.rs:137:14
[INFO] [stderr]     31:     0x5595b08ef26f - std::rt::lang_start_internal::hc8c7091d7b5a3029
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/rt.rs:148:20
[INFO] [stderr]     32:     0x5595b08d37fa - std::rt::lang_start::h33a13da6b335d901
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/rt.rs:165:17
[INFO] [stderr]     33:     0x5595b08d8db1 - main
[INFO] [stderr]     34:     0x7f0bbedfb083 - __libc_start_main
[INFO] [stderr]     35:     0x5595b08cfbbe - _start
[INFO] [stderr]     36:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "1df3222e99114ae879395caf3825ab97a5cdcd0237a7cb5dfa04963f19de7dbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1df3222e99114ae879395caf3825ab97a5cdcd0237a7cb5dfa04963f19de7dbd", kill_on_drop: false }`
[INFO] [stdout] 1df3222e99114ae879395caf3825ab97a5cdcd0237a7cb5dfa04963f19de7dbd