[INFO] cloning repository https://github.com/cypherkids/Basic-Clipper
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cypherkids/Basic-Clipper" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcypherkids%2FBasic-Clipper", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcypherkids%2FBasic-Clipper'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7b402054f963f59e54a3ce933dcae45a035ee650
[INFO] documenting cypherkids/Basic-Clipper against master#d7d9f15be205b45d44700e7ac33b4f79b91f9680 for pr-117450
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcypherkids%2FBasic-Clipper" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cypherkids/Basic-Clipper on toolchain d7d9f15be205b45d44700e7ac33b4f79b91f9680
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d7d9f15be205b45d44700e7ac33b4f79b91f9680" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cypherkids/Basic-Clipper
[INFO] finished tweaking git repo https://github.com/cypherkids/Basic-Clipper
[INFO] tweaked toml for git repo https://github.com/cypherkids/Basic-Clipper written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/cypherkids/Basic-Clipper already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d7d9f15be205b45d44700e7ac33b4f79b91f9680" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] documenting cypherkids/Basic-Clipper against master#50be22964035027398754e54cd3a497efb00f83e for pr-117450
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcypherkids%2FBasic-Clipper" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cypherkids/Basic-Clipper on toolchain 50be22964035027398754e54cd3a497efb00f83e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+50be22964035027398754e54cd3a497efb00f83e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cypherkids/Basic-Clipper
[INFO] finished tweaking git repo https://github.com/cypherkids/Basic-Clipper
[INFO] tweaked toml for git repo https://github.com/cypherkids/Basic-Clipper written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/cypherkids/Basic-Clipper already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+50be22964035027398754e54cd3a497efb00f83e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+50be22964035027398754e54cd3a497efb00f83e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a3a1bff97d2fa345f60f0ab621bbe810813bf54ea404824b98f5ee2980335b7f
[INFO] running `Command { std: "docker" "start" "-a" "a3a1bff97d2fa345f60f0ab621bbe810813bf54ea404824b98f5ee2980335b7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a3a1bff97d2fa345f60f0ab621bbe810813bf54ea404824b98f5ee2980335b7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3a1bff97d2fa345f60f0ab621bbe810813bf54ea404824b98f5ee2980335b7f", kill_on_drop: false }`
[INFO] [stdout] a3a1bff97d2fa345f60f0ab621bbe810813bf54ea404824b98f5ee2980335b7f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+50be22964035027398754e54cd3a497efb00f83e" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cf73f4f20a404fc5be4565d858f613291de89aeac75ce9810d430c294dbaff93
[INFO] running `Command { std: "docker" "start" "-a" "cf73f4f20a404fc5be4565d858f613291de89aeac75ce9810d430c294dbaff93", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]     Checking memchr v2.6.4
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]     Checking aho-corasick v1.1.2
[INFO] [stderr]    Compiling xcb v0.8.2
[INFO] [stderr] error: failed to run custom build command for `xcb v0.8.2`
[INFO] [stderr] note: To improve backtraces for build dependencies, set the CARGO_PROFILE_DEV_BUILD_OVERRIDE_DEBUG=true environment variable to enable debug information generation.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/xcb-f304c20809fde23d/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   error occured in handler:  ('request: ', ('xcb', 'GenericEvent', 'QueryVersion'))
[INFO] [stderr]   Traceback (most recent call last):
[INFO] [stderr]     File "/opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/xcb-0.8.2/rs_client.py", line 2448, in <module>
[INFO] [stderr]       module.generate()
[INFO] [stderr]     File "/opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/xcb-0.8.2/xcbgen/state.py", line 108, in generate
[INFO] [stderr]       self.close()
[INFO] [stderr]     File "/opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/xcb-0.8.2/rs_client.py", line 296, in rs_close
[INFO] [stderr]       _f.writeout(os.path.join(module.rs_srcdir, "ffi", "%s.rs" % _module_name(_ns.ext_name)))
[INFO] [stderr]     File "/opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/xcb-0.8.2/rs_client.py", line 114, in writeout
[INFO] [stderr]       with open(path, 'w') as f:
[INFO] [stderr]   OSError: [Errno 30] Read-only file system: '/opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/xcb-0.8.2/src/ffi/genericevent.rs'
[INFO] [stderr]   thread 'main' panicked at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/xcb-0.8.2/build.rs:75:17:
[INFO] [stderr]   processing of /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/xcb-0.8.2/xml/ge.xml returned non-zero (1)
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x55f9780c10ec - std::backtrace_rs::backtrace::libunwind::trace::h07473c7175e14fb5
[INFO] [stderr]                                  at /rustc/50be22964035027398754e54cd3a497efb00f83e/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
[INFO] [stderr]      1:     0x55f9780c10ec - std::backtrace_rs::backtrace::trace_unsynchronized::h202a3f3a96ced794
[INFO] [stderr]                                  at /rustc/50be22964035027398754e54cd3a497efb00f83e/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x55f9780c10ec - std::sys_common::backtrace::_print_fmt::h855a5ba890cea478
[INFO] [stderr]                                  at /rustc/50be22964035027398754e54cd3a497efb00f83e/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x55f9780c10ec - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hbe90c35ea34d1f62
[INFO] [stderr]                                  at /rustc/50be22964035027398754e54cd3a497efb00f83e/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stderr]      4:     0x55f9780e45e0 - core::fmt::rt::Argument::fmt::h40c8e52af43f1913
[INFO] [stderr]                                  at /rustc/50be22964035027398754e54cd3a497efb00f83e/library/core/src/fmt/rt.rs:142:9
[INFO] [stderr]      5:     0x55f9780e45e0 - core::fmt::write::h7ebd148a9e2465ff
[INFO] [stderr]                                  at /rustc/50be22964035027398754e54cd3a497efb00f83e/library/core/src/fmt/mod.rs:1117:17
[INFO] [stderr]      6:     0x55f9780bf05f - std::io::Write::write_fmt::h10d8356a69904ae5
[INFO] [stderr]                                  at /rustc/50be22964035027398754e54cd3a497efb00f83e/library/std/src/io/mod.rs:1763:15
[INFO] [stderr]      7:     0x55f9780c0ed4 - std::sys_common::backtrace::_print::h78586332559d46a3
[INFO] [stderr]                                  at /rustc/50be22964035027398754e54cd3a497efb00f83e/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stderr]      8:     0x55f9780c0ed4 - std::sys_common::backtrace::print::h52739c684be26de7
[INFO] [stderr]                                  at /rustc/50be22964035027398754e54cd3a497efb00f83e/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stderr]      9:     0x55f9780c2577 - std::panicking::default_hook::{{closure}}::he40b9ce7ee3b47ca
[INFO] [stderr]     10:     0x55f9780c22df - std::panicking::default_hook::h209475733eec73f4
[INFO] [stderr]                                  at /rustc/50be22964035027398754e54cd3a497efb00f83e/library/std/src/panicking.rs:292:9
[INFO] [stderr]     11:     0x55f9780c29f8 - std::panicking::rust_panic_with_hook::h4c30e316acff406c
[INFO] [stderr]                                  at /rustc/50be22964035027398754e54cd3a497efb00f83e/library/std/src/panicking.rs:779:13
[INFO] [stderr]     12:     0x55f9780c28de - std::panicking::begin_panic_handler::{{closure}}::hc4bf36516a03cc05
[INFO] [stderr]                                  at /rustc/50be22964035027398754e54cd3a497efb00f83e/library/std/src/panicking.rs:657:13
[INFO] [stderr]     13:     0x55f9780c15b6 - std::sys_common::backtrace::__rust_end_short_backtrace::h12265e1c79695b79
[INFO] [stderr]                                  at /rustc/50be22964035027398754e54cd3a497efb00f83e/library/std/src/sys_common/backtrace.rs:170:18
[INFO] [stderr]     14:     0x55f9780c2642 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/50be22964035027398754e54cd3a497efb00f83e/library/std/src/panicking.rs:645:5
[INFO] [stderr]     15:     0x55f97809b285 - core::panicking::panic_fmt::hdfbd4a8abbd5c306
[INFO] [stderr]                                  at /rustc/50be22964035027398754e54cd3a497efb00f83e/library/core/src/panicking.rs:72:14
[INFO] [stderr]     16:     0x55f9780a1161 - build_script_build::main::{{closure}}::h096b2e953e560409
[INFO] [stderr]     17:     0x55f9780a0055 - build_script_build::visit_xml::h848bca050dda1452
[INFO] [stderr]     18:     0x55f9780a06f3 - build_script_build::main::h095525c498d52cf7
[INFO] [stderr]     19:     0x55f97809cdf3 - core::ops::function::FnOnce::call_once::hdd1ed348e7455fb6
[INFO] [stderr]     20:     0x55f97809bdc6 - std::sys_common::backtrace::__rust_begin_short_backtrace::h5d32fd55ea30a0e8
[INFO] [stderr]     21:     0x55f97809c519 - std::rt::lang_start::{{closure}}::h5e5a19461beb6c7b
[INFO] [stderr]     22:     0x55f9780bbdf7 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h05e9df521768b010
[INFO] [stderr]                                  at /rustc/50be22964035027398754e54cd3a497efb00f83e/library/core/src/ops/function.rs:284:13
[INFO] [stderr]     23:     0x55f9780bbdf7 - std::panicking::try::do_call::hc32862f923583c5d
[INFO] [stderr]                                  at /rustc/50be22964035027398754e54cd3a497efb00f83e/library/std/src/panicking.rs:552:40
[INFO] [stderr]     24:     0x55f9780bbdf7 - std::panicking::try::h49efd5dc079e2443
[INFO] [stderr]                                  at /rustc/50be22964035027398754e54cd3a497efb00f83e/library/std/src/panicking.rs:516:19
[INFO] [stderr]     25:     0x55f9780bbdf7 - std::panic::catch_unwind::h30a8b96e6544fff1
[INFO] [stderr]                                  at /rustc/50be22964035027398754e54cd3a497efb00f83e/library/std/src/panic.rs:142:14
[INFO] [stderr]     26:     0x55f9780bbdf7 - std::rt::lang_start_internal::{{closure}}::h7bcb5a70fdde9eb4
[INFO] [stderr]                                  at /rustc/50be22964035027398754e54cd3a497efb00f83e/library/std/src/rt.rs:148:48
[INFO] [stderr]     27:     0x55f9780bbdf7 - std::panicking::try::do_call::hc9a63e53f07dabc9
[INFO] [stderr]                                  at /rustc/50be22964035027398754e54cd3a497efb00f83e/library/std/src/panicking.rs:552:40
[INFO] [stderr]     28:     0x55f9780bbdf7 - std::panicking::try::h1e0ad22e261362c3
[INFO] [stderr]                                  at /rustc/50be22964035027398754e54cd3a497efb00f83e/library/std/src/panicking.rs:516:19
[INFO] [stderr]     29:     0x55f9780bbdf7 - std::panic::catch_unwind::hfba18e64ff3ff6c4
[INFO] [stderr]                                  at /rustc/50be22964035027398754e54cd3a497efb00f83e/library/std/src/panic.rs:142:14
[INFO] [stderr]     30:     0x55f9780bbdf7 - std::rt::lang_start_internal::ha546740bcc1ea825
[INFO] [stderr]                                  at /rustc/50be22964035027398754e54cd3a497efb00f83e/library/std/src/rt.rs:148:20
[INFO] [stderr]     31:     0x55f97809c4f7 - std::rt::lang_start::hf5d267177ffa3679
[INFO] [stderr]     32:     0x55f9780a11e5 - main
[INFO] [stderr]     33:     0x7ffb89badd90 - <unknown>
[INFO] [stderr]     34:     0x7ffb89bade40 - __libc_start_main
[INFO] [stderr]     35:     0x55f97809b9a5 - _start
[INFO] [stderr]     36:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "cf73f4f20a404fc5be4565d858f613291de89aeac75ce9810d430c294dbaff93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf73f4f20a404fc5be4565d858f613291de89aeac75ce9810d430c294dbaff93", kill_on_drop: false }`
[INFO] [stdout] cf73f4f20a404fc5be4565d858f613291de89aeac75ce9810d430c294dbaff93