[INFO] cloning repository https://github.com/phynalle/civetcat
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/phynalle/civetcat" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fphynalle%2Fcivetcat", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fphynalle%2Fcivetcat'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 50cb20371269df70927ab00be7ccf8b8ece2ef86
[INFO] checking phynalle/civetcat against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fphynalle%2Fcivetcat" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/phynalle/civetcat on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/phynalle/civetcat
[INFO] finished tweaking git repo https://github.com/phynalle/civetcat
[INFO] tweaked toml for git repo https://github.com/phynalle/civetcat written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/phynalle/civetcat already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "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-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b13aecf0958f8154453e8e7f1e610b1cee45ff6b4e11b8aa551d6ca212bae999
[INFO] running `Command { std: "docker" "start" "-a" "b13aecf0958f8154453e8e7f1e610b1cee45ff6b4e11b8aa551d6ca212bae999", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b13aecf0958f8154453e8e7f1e610b1cee45ff6b4e11b8aa551d6ca212bae999", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b13aecf0958f8154453e8e7f1e610b1cee45ff6b4e11b8aa551d6ca212bae999", kill_on_drop: false }`
[INFO] [stdout] b13aecf0958f8154453e8e7f1e610b1cee45ff6b4e11b8aa551d6ca212bae999
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 57c64a2bf0b53ba08404ed4b1646ab8844c15ca6644b1d4c1001edae9fc4da5d
[INFO] running `Command { std: "docker" "start" "-a" "57c64a2bf0b53ba08404ed4b1646ab8844c15ca6644b1d4c1001edae9fc4da5d", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling cc v1.0.3
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking libc v0.2.34
[INFO] [stderr]    Compiling pkg-config v0.3.9
[INFO] [stderr]    Compiling num-traits v0.1.41
[INFO] [stderr]    Compiling itoa v0.3.4
[INFO] [stderr]    Compiling dtoa v0.4.2
[INFO] [stderr]    Compiling serde v1.0.24
[INFO] [stderr]     Checking unicode-width v0.1.4
[INFO] [stderr]     Checking strsim v0.6.0
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking vec_map v0.8.0
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking textwrap v0.9.0
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking atty v0.2.3
[INFO] [stderr]    Compiling cmake v0.1.29
[INFO] [stderr]     Checking clap v2.29.0
[INFO] [stderr]    Compiling onig_sys v66.1.4
[INFO] [stderr]    Compiling serde_derive_internals v0.18.0
[INFO] [stderr]     Checking serde_json v1.0.8
[INFO] [stderr]    Compiling serde_derive v1.0.24
[INFO] [stderr]     Checking onig v2.0.2
[INFO] [stderr]    Compiling civetcat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `to_weak`
[INFO] [stdout]   --> src/syntax/raw_rule.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn to_weak(&self) -> WeakRawRuleRef {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `upgrade`
[INFO] [stdout]   --> src/syntax/raw_rule.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 44 |     pub fn upgrade(&self) -> Option<RawRuleRef> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: failed to run custom build command for `civetcat v0.1.0 (/opt/rustwide/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/civetcat-438e3e6a8121f7cd/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:139:51
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x564e91f0f140 - std::backtrace_rs::backtrace::libunwind::trace::h4e80f45db05e9df0
[INFO] [stderr]                                  at /rustc/90442458ac46b1d5eed752c316da25450f67285b/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stderr]      1:     0x564e91f0f140 - std::backtrace_rs::backtrace::trace_unsynchronized::h9db62a3d3587f6c3
[INFO] [stderr]                                  at /rustc/90442458ac46b1d5eed752c316da25450f67285b/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x564e91f0f140 - std::sys_common::backtrace::_print_fmt::h2fafbe52c9090591
[INFO] [stderr]                                  at /rustc/90442458ac46b1d5eed752c316da25450f67285b/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x564e91f0f140 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h7d41ae04358c516d
[INFO] [stderr]                                  at /rustc/90442458ac46b1d5eed752c316da25450f67285b/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x564e91f2dc4c - core::fmt::write::h968e6400cbc51d6a
[INFO] [stderr]                                  at /rustc/90442458ac46b1d5eed752c316da25450f67285b/library/core/src/fmt/mod.rs:1115:17
[INFO] [stderr]      5:     0x564e91f0d9f5 - std::io::Write::write_fmt::h2eaa97c6f8c9e829
[INFO] [stderr]                                  at /rustc/90442458ac46b1d5eed752c316da25450f67285b/library/std/src/io/mod.rs:1642:15
[INFO] [stderr]      6:     0x564e91f10d6b - std::sys_common::backtrace::_print::h601a6bc581f240d5
[INFO] [stderr]                                  at /rustc/90442458ac46b1d5eed752c316da25450f67285b/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x564e91f10d6b - std::sys_common::backtrace::print::h8b96e15ba64b8e64
[INFO] [stderr]                                  at /rustc/90442458ac46b1d5eed752c316da25450f67285b/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x564e91f10d6b - std::panicking::default_hook::{{closure}}::h94fa9d2f08c20620
[INFO] [stderr]                                  at /rustc/90442458ac46b1d5eed752c316da25450f67285b/library/std/src/panicking.rs:208:50
[INFO] [stderr]      9:     0x564e91f10841 - std::panicking::default_hook::h6d463f5a2e9d9986
[INFO] [stderr]                                  at /rustc/90442458ac46b1d5eed752c316da25450f67285b/library/std/src/panicking.rs:225:9
[INFO] [stderr]     10:     0x564e91f11434 - std::panicking::rust_panic_with_hook::h1e953652a338573e
[INFO] [stderr]                                  at /rustc/90442458ac46b1d5eed752c316da25450f67285b/library/std/src/panicking.rs:622:17
[INFO] [stderr]     11:     0x564e91f10f17 - std::panicking::begin_panic_handler::{{closure}}::h78bf2fec525c238a
[INFO] [stderr]                                  at /rustc/90442458ac46b1d5eed752c316da25450f67285b/library/std/src/panicking.rs:519:13
[INFO] [stderr]     12:     0x564e91f0f63c - std::sys_common::backtrace::__rust_end_short_backtrace::h651eb6282e4ea6b2
[INFO] [stderr]                                  at /rustc/90442458ac46b1d5eed752c316da25450f67285b/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]     13:     0x564e91f10e79 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/90442458ac46b1d5eed752c316da25450f67285b/library/std/src/panicking.rs:515:5
[INFO] [stderr]     14:     0x564e91e94e91 - core::panicking::panic_fmt::hdfd0360cedf2d908
[INFO] [stderr]                                  at /rustc/90442458ac46b1d5eed752c316da25450f67285b/library/core/src/panicking.rs:92:14
[INFO] [stderr]     15:     0x564e91e94f83 - core::result::unwrap_failed::hc9085c7b2fddd31a
[INFO] [stderr]                                  at /rustc/90442458ac46b1d5eed752c316da25450f67285b/library/core/src/result.rs:1355:5
[INFO] [stderr]     16:     0x564e91ec0efe - core::result::Result<T,E>::unwrap::h6c7dde6e5d1472bd
[INFO] [stderr]                                  at /rustc/90442458ac46b1d5eed752c316da25450f67285b/library/core/src/result.rs:1037:23
[INFO] [stderr]     17:     0x564e91ee2c6e - build_script_build::main::hb23c4554b2f9d253
[INFO] [stderr]                                  at /opt/rustwide/workdir/build.rs:139:17
[INFO] [stderr]     18:     0x564e91eddd6b - core::ops::function::FnOnce::call_once::h28d8562b6a0f50a7
[INFO] [stderr]                                  at /rustc/90442458ac46b1d5eed752c316da25450f67285b/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     19:     0x564e91edd9be - std::sys_common::backtrace::__rust_begin_short_backtrace::hb17ec9a8c93ac820
[INFO] [stderr]                                  at /rustc/90442458ac46b1d5eed752c316da25450f67285b/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stderr]     20:     0x564e91eda911 - std::rt::lang_start::{{closure}}::h44e63268a0d64aa1
[INFO] [stderr]                                  at /rustc/90442458ac46b1d5eed752c316da25450f67285b/library/std/src/rt.rs:63:18
[INFO] [stderr]     21:     0x564e91f1193a - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hccffb0872f46e99d
[INFO] [stderr]                                  at /rustc/90442458ac46b1d5eed752c316da25450f67285b/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     22:     0x564e91f1193a - std::panicking::try::do_call::h814e0410256bb9f2
[INFO] [stderr]                                  at /rustc/90442458ac46b1d5eed752c316da25450f67285b/library/std/src/panicking.rs:401:40
[INFO] [stderr]     23:     0x564e91f1193a - std::panicking::try::h97cbec2057cc2c0d
[INFO] [stderr]                                  at /rustc/90442458ac46b1d5eed752c316da25450f67285b/library/std/src/panicking.rs:365:19
[INFO] [stderr]     24:     0x564e91f1193a - std::panic::catch_unwind::h964f35f6fa41d1d7
[INFO] [stderr]                                  at /rustc/90442458ac46b1d5eed752c316da25450f67285b/library/std/src/panic.rs:434:14
[INFO] [stderr]     25:     0x564e91f1193a - std::rt::lang_start_internal::{{closure}}::hb97931cf27086d8b
[INFO] [stderr]                                  at /rustc/90442458ac46b1d5eed752c316da25450f67285b/library/std/src/rt.rs:45:48
[INFO] [stderr]     26:     0x564e91f1193a - std::panicking::try::do_call::hf0d61be342e8297a
[INFO] [stderr]                                  at /rustc/90442458ac46b1d5eed752c316da25450f67285b/library/std/src/panicking.rs:401:40
[INFO] [stderr]     27:     0x564e91f1193a - std::panicking::try::h6b40eeb22db57b23
[INFO] [stderr]                                  at /rustc/90442458ac46b1d5eed752c316da25450f67285b/library/std/src/panicking.rs:365:19
[INFO] [stderr]     28:     0x564e91f1193a - std::panic::catch_unwind::h425af95fffdb0cf5
[INFO] [stderr]                                  at /rustc/90442458ac46b1d5eed752c316da25450f67285b/library/std/src/panic.rs:434:14
[INFO] [stderr]     29:     0x564e91f1193a - std::rt::lang_start_internal::h21e355575f2fedc7
[INFO] [stderr]                                  at /rustc/90442458ac46b1d5eed752c316da25450f67285b/library/std/src/rt.rs:45:20
[INFO] [stderr]     30:     0x564e91eda8e0 - std::rt::lang_start::h288ed5ca7f0a441b
[INFO] [stderr]                                  at /rustc/90442458ac46b1d5eed752c316da25450f67285b/library/std/src/rt.rs:62:5
[INFO] [stderr]     31:     0x564e91ee7c3c - main
[INFO] [stderr]     32:     0x7ff4f5b0e0b3 - __libc_start_main
[INFO] [stderr]     33:     0x564e91e9564e - _start
[INFO] [stderr]     34:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "57c64a2bf0b53ba08404ed4b1646ab8844c15ca6644b1d4c1001edae9fc4da5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57c64a2bf0b53ba08404ed4b1646ab8844c15ca6644b1d4c1001edae9fc4da5d", kill_on_drop: false }`
[INFO] [stdout] 57c64a2bf0b53ba08404ed4b1646ab8844c15ca6644b1d4c1001edae9fc4da5d