[INFO] cloning repository https://github.com/wilbyang/c2server
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wilbyang/c2server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwilbyang%2Fc2server", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwilbyang%2Fc2server'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c2ba2d91b0b1c1a26f30d7e7454bd241da22736a
[INFO] testing wilbyang/c2server against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwilbyang%2Fc2server" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wilbyang/c2server on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/wilbyang/c2server
[INFO] finished tweaking git repo https://github.com/wilbyang/c2server
[INFO] tweaked toml for git repo https://github.com/wilbyang/c2server written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/wilbyang/c2server already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f10c6188f54c26ab50646578b9d7e68355d014700aed3fced341ae7134557dac
[INFO] running `Command { std: "docker" "start" "-a" "f10c6188f54c26ab50646578b9d7e68355d014700aed3fced341ae7134557dac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f10c6188f54c26ab50646578b9d7e68355d014700aed3fced341ae7134557dac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f10c6188f54c26ab50646578b9d7e68355d014700aed3fced341ae7134557dac", kill_on_drop: false }`
[INFO] [stdout] f10c6188f54c26ab50646578b9d7e68355d014700aed3fced341ae7134557dac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 88870f799990ae4dc8f13e22460914039b899b630849778425062c2a2a523cbb
[INFO] running `Command { std: "docker" "start" "-a" "88870f799990ae4dc8f13e22460914039b899b630849778425062c2a2a523cbb", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling anyhow v1.0.43
[INFO] [stderr]    Compiling futures-task v0.3.16
[INFO] [stderr]    Compiling futures-channel v0.3.16
[INFO] [stderr]    Compiling httparse v1.5.1
[INFO] [stderr]    Compiling multimap v0.8.3
[INFO] [stderr]    Compiling tower-layer v0.3.1
[INFO] [stderr]    Compiling tokio v1.10.0
[INFO] [stderr]    Compiling itertools v0.10.1
[INFO] [stderr]    Compiling futures-util v0.3.16
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling which v4.2.2
[INFO] [stderr]    Compiling petgraph v0.5.1
[INFO] [stderr]    Compiling async-stream-impl v0.3.2
[INFO] [stderr]    Compiling tracing-futures v0.2.5
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling prost-build v0.8.0
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling async-stream v0.3.2
[INFO] [stderr]    Compiling prost-derive v0.8.0
[INFO] [stderr]    Compiling tempfile v3.2.0
[INFO] [stderr]    Compiling prost v0.8.0
[INFO] [stderr]    Compiling prost-types v0.8.0
[INFO] [stderr]    Compiling tokio-util v0.6.7
[INFO] [stderr]    Compiling tokio-stream v0.1.7
[INFO] [stderr]    Compiling tokio-io-timeout v1.1.1
[INFO] [stderr]    Compiling h2 v0.3.3
[INFO] [stderr]    Compiling tower v0.4.8
[INFO] [stderr]    Compiling tonic-build v0.5.2
[INFO] [stderr]    Compiling c2rat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `c2rat v0.1.0 (/opt/rustwide/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/c2rat-b440656672938969/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }', build.rs:5:10
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x560b5c45e40c - std::backtrace_rs::backtrace::libunwind::trace::h91c465e73bf6c785
[INFO] [stderr]                                  at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
[INFO] [stderr]      1:     0x560b5c45e40c - std::backtrace_rs::backtrace::trace_unsynchronized::hae9da36f5d58b5f3
[INFO] [stderr]                                  at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x560b5c45e40c - std::sys_common::backtrace::_print_fmt::h7f499fa126a7effb
[INFO] [stderr]                                  at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x560b5c45e40c - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h3e2b509ce2ce6007
[INFO] [stderr]                                  at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x560b5c485aac - core::fmt::write::h753c7571fa063ecb
[INFO] [stderr]                                  at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/core/src/fmt/mod.rs:1168:17
[INFO] [stderr]      5:     0x560b5c459d73 - std::io::Write::write_fmt::h2815c0519c99ba09
[INFO] [stderr]                                  at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/io/mod.rs:1660:15
[INFO] [stderr]      6:     0x560b5c460722 - std::sys_common::backtrace::_print::h64941a6fc8b0ed9b
[INFO] [stderr]                                  at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x560b5c460722 - std::sys_common::backtrace::print::hcf25e43e1a9b0766
[INFO] [stderr]                                  at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x560b5c460722 - std::panicking::default_hook::{{closure}}::h78d3e6cf97fc623d
[INFO] [stderr]                                  at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/panicking.rs:211:50
[INFO] [stderr]      9:     0x560b5c460305 - std::panicking::default_hook::hda898f8d3ad1a5ae
[INFO] [stderr]                                  at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/panicking.rs:228:9
[INFO] [stderr]     10:     0x560b5c460d95 - std::panicking::rust_panic_with_hook::h1a5ea2d6c23051aa
[INFO] [stderr]                                  at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/panicking.rs:610:17
[INFO] [stderr]     11:     0x560b5c460a90 - std::panicking::begin_panic_handler::{{closure}}::h07f549390938b73f
[INFO] [stderr]                                  at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/panicking.rs:502:13
[INFO] [stderr]     12:     0x560b5c45e8b4 - std::sys_common::backtrace::__rust_end_short_backtrace::h5ec3758a92cfb00d
[INFO] [stderr]                                  at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/sys_common/backtrace.rs:139:18
[INFO] [stderr]     13:     0x560b5c4607c9 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/panicking.rs:498:5
[INFO] [stderr]     14:     0x560b5c1a5a21 - core::panicking::panic_fmt::h3a79a6a99affe1d5
[INFO] [stderr]                                  at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/core/src/panicking.rs:116:14
[INFO] [stderr]     15:     0x560b5c1a5b13 - core::result::unwrap_failed::ha0327e3803285d6e
[INFO] [stderr]                                  at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/core/src/result.rs:1690:5
[INFO] [stderr]     16:     0x560b5c1e4ef6 - core::result::Result<T,E>::unwrap::h5042664095fd7fa2
[INFO] [stderr]                                  at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/core/src/result.rs:1018:23
[INFO] [stderr]     17:     0x560b5c1d74c8 - build_script_build::main::hdc292ae98fe1fd4b
[INFO] [stderr]                                  at /opt/rustwide/workdir/build.rs:2:5
[INFO] [stderr]     18:     0x560b5c1b3deb - core::ops::function::FnOnce::call_once::h537be336bf3f4e60
[INFO] [stderr]                                  at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     19:     0x560b5c1d962e - std::sys_common::backtrace::__rust_begin_short_backtrace::hbe3e230eefab1e88
[INFO] [stderr]                                  at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/sys_common/backtrace.rs:123:18
[INFO] [stderr]     20:     0x560b5c1b72d1 - std::rt::lang_start::{{closure}}::h06bcbf45dfe9dc26
[INFO] [stderr]                                  at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/rt.rs:145:18
[INFO] [stderr]     21:     0x560b5c45dac0 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h443f738a8e9f947a
[INFO] [stderr]                                  at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     22:     0x560b5c45dac0 - std::panicking::try::do_call::h1e21ba261ba489ec
[INFO] [stderr]                                  at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/panicking.rs:406:40
[INFO] [stderr]     23:     0x560b5c45dac0 - std::panicking::try::h6afd48af8b6c96ac
[INFO] [stderr]                                  at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/panicking.rs:370:19
[INFO] [stderr]     24:     0x560b5c45dac0 - std::panic::catch_unwind::h85dd95e0bab7fb60
[INFO] [stderr]                                  at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/panic.rs:133:14
[INFO] [stderr]     25:     0x560b5c45dac0 - std::rt::lang_start_internal::{{closure}}::h038455e697c8b03e
[INFO] [stderr]                                  at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/rt.rs:128:48
[INFO] [stderr]     26:     0x560b5c45dac0 - std::panicking::try::do_call::h6b0ad65979f3077a
[INFO] [stderr]                                  at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/panicking.rs:406:40
[INFO] [stderr]     27:     0x560b5c45dac0 - std::panicking::try::h010108d314169ac6
[INFO] [stderr]                                  at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/panicking.rs:370:19
[INFO] [stderr]     28:     0x560b5c45dac0 - std::panic::catch_unwind::hff397f912b1535c2
[INFO] [stderr]                                  at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/panic.rs:133:14
[INFO] [stderr]     29:     0x560b5c45dac0 - std::rt::lang_start_internal::h52e73755f77c7dd9
[INFO] [stderr]                                  at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/rt.rs:128:20
[INFO] [stderr]     30:     0x560b5c1b72a0 - std::rt::lang_start::h4c339aa5dca2c588
[INFO] [stderr]                                  at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/rt.rs:144:17
[INFO] [stderr]     31:     0x560b5c1d96dc - main
[INFO] [stderr]     32:     0x7ff08ccb70b3 - __libc_start_main
[INFO] [stderr]     33:     0x560b5c1a61be - _start
[INFO] [stderr]     34:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "88870f799990ae4dc8f13e22460914039b899b630849778425062c2a2a523cbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88870f799990ae4dc8f13e22460914039b899b630849778425062c2a2a523cbb", kill_on_drop: false }`
[INFO] [stdout] 88870f799990ae4dc8f13e22460914039b899b630849778425062c2a2a523cbb