[INFO] cloning repository https://github.com/brsnb/xcb_test_wm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/brsnb/xcb_test_wm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrsnb%2Fxcb_test_wm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrsnb%2Fxcb_test_wm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fed0ac52d720e539bb80ce66c4ae8b4e32134451
[INFO] checking brsnb/xcb_test_wm/fed0ac52d720e539bb80ce66c4ae8b4e32134451 against master#16b569057e4d1591b4bee05f10df34000308dedc for pr-127827
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrsnb%2Fxcb_test_wm" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/brsnb/xcb_test_wm on toolchain 16b569057e4d1591b4bee05f10df34000308dedc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+16b569057e4d1591b4bee05f10df34000308dedc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/brsnb/xcb_test_wm
[INFO] finished tweaking git repo https://github.com/brsnb/xcb_test_wm
[INFO] tweaked toml for git repo https://github.com/brsnb/xcb_test_wm written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/brsnb/xcb_test_wm 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" "+16b569057e4d1591b4bee05f10df34000308dedc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded xcb-util v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+16b569057e4d1591b4bee05f10df34000308dedc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e3222773c07394ab002e08f044a8dd37f79968ec2daf93993829e9538a71f69a
[INFO] running `Command { std: "docker" "start" "-a" "e3222773c07394ab002e08f044a8dd37f79968ec2daf93993829e9538a71f69a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e3222773c07394ab002e08f044a8dd37f79968ec2daf93993829e9538a71f69a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3222773c07394ab002e08f044a8dd37f79968ec2daf93993829e9538a71f69a", kill_on_drop: false }`
[INFO] [stdout] e3222773c07394ab002e08f044a8dd37f79968ec2daf93993829e9538a71f69a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+16b569057e4d1591b4bee05f10df34000308dedc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3dd83db1b398bfd93b1ddcf3f60d32a876dd1bc9ea916368ae20f445ef1c7a62
[INFO] running `Command { std: "docker" "start" "-a" "3dd83db1b398bfd93b1ddcf3f60d32a876dd1bc9ea916368ae20f445ef1c7a62", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.55
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]    Compiling pkg-config v0.3.14
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]    Compiling x11 v2.18.1
[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-9ee0e59b7fa846ff/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   error occured in handler:  ('request: ', ('xcb', 'Xinerama', 'QueryScreens'))
[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/xinerama.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/xinerama.xml returned non-zero (1)
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x558cac2c3845 - std::backtrace_rs::backtrace::libunwind::trace::hfb477357653a4e4f
[INFO] [stderr]                                  at /rustc/16b569057e4d1591b4bee05f10df34000308dedc/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5
[INFO] [stderr]      1:     0x558cac2c3845 - std::backtrace_rs::backtrace::trace_unsynchronized::h525c0fd0df716fa6
[INFO] [stderr]                                  at /rustc/16b569057e4d1591b4bee05f10df34000308dedc/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x558cac2c3845 - std::sys::backtrace::_print_fmt::ha838f41c5e535f51
[INFO] [stderr]                                  at /rustc/16b569057e4d1591b4bee05f10df34000308dedc/library/std/src/sys/backtrace.rs:65:5
[INFO] [stderr]      3:     0x558cac2c3845 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h1e9b6837be55babe
[INFO] [stderr]                                  at /rustc/16b569057e4d1591b4bee05f10df34000308dedc/library/std/src/sys/backtrace.rs:40:26
[INFO] [stderr]      4:     0x558cac2e422b - core::fmt::rt::Argument::fmt::h964c89d0f98e9825
[INFO] [stderr]                                  at /rustc/16b569057e4d1591b4bee05f10df34000308dedc/library/core/src/fmt/rt.rs:173:76
[INFO] [stderr]      5:     0x558cac2e422b - core::fmt::write::h806b4533fac49ea3
[INFO] [stderr]                                  at /rustc/16b569057e4d1591b4bee05f10df34000308dedc/library/core/src/fmt/mod.rs:1182:21
[INFO] [stderr]      6:     0x558cac2c114f - std::io::Write::write_fmt::h63c0ff199204c41f
[INFO] [stderr]                                  at /rustc/16b569057e4d1591b4bee05f10df34000308dedc/library/std/src/io/mod.rs:1827:15
[INFO] [stderr]      7:     0x558cac2c4b31 - std::sys::backtrace::BacktraceLock::print::h64a586f07964a880
[INFO] [stderr]                                  at /rustc/16b569057e4d1591b4bee05f10df34000308dedc/library/std/src/sys/backtrace.rs:43:9
[INFO] [stderr]      8:     0x558cac2c4b31 - std::panicking::default_hook::{{closure}}::h027d3d88677b9c45
[INFO] [stderr]                                  at /rustc/16b569057e4d1591b4bee05f10df34000308dedc/library/std/src/panicking.rs:269:22
[INFO] [stderr]      9:     0x558cac2c480c - std::panicking::default_hook::hb3342887544240f4
[INFO] [stderr]                                  at /rustc/16b569057e4d1591b4bee05f10df34000308dedc/library/std/src/panicking.rs:296:9
[INFO] [stderr]     10:     0x558cac2c5121 - std::panicking::rust_panic_with_hook::hb25aeb72f7ce42c5
[INFO] [stderr]                                  at /rustc/16b569057e4d1591b4bee05f10df34000308dedc/library/std/src/panicking.rs:800:13
[INFO] [stderr]     11:     0x558cac2c5017 - std::panicking::begin_panic_handler::{{closure}}::ha9b06f101e0004f6
[INFO] [stderr]                                  at /rustc/16b569057e4d1591b4bee05f10df34000308dedc/library/std/src/panicking.rs:674:13
[INFO] [stderr]     12:     0x558cac2c3d09 - std::sys::backtrace::__rust_end_short_backtrace::hdb1077349ce2b9a0
[INFO] [stderr]                                  at /rustc/16b569057e4d1591b4bee05f10df34000308dedc/library/std/src/sys/backtrace.rs:168:18
[INFO] [stderr]     13:     0x558cac2c4ca4 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/16b569057e4d1591b4bee05f10df34000308dedc/library/std/src/panicking.rs:665:5
[INFO] [stderr]     14:     0x558cac2e3433 - core::panicking::panic_fmt::h3a19e126241d136c
[INFO] [stderr]                                  at /rustc/16b569057e4d1591b4bee05f10df34000308dedc/library/core/src/panicking.rs:74:14
[INFO] [stderr]     15:     0x558cac29ebd9 - build_script_build::main::{{closure}}::hdc5d3640d0e9e50c
[INFO] [stderr]     16:     0x558cac29d826 - build_script_build::visit_xml::h57888b16be1b48f3
[INFO] [stderr]     17:     0x558cac29e14c - build_script_build::main::ha0acd1ac0c9af75f
[INFO] [stderr]     18:     0x558cac29a323 - core::ops::function::FnOnce::call_once::h63dbfba30a172157
[INFO] [stderr]     19:     0x558cac299b36 - std::sys::backtrace::__rust_begin_short_backtrace::hbd65f8643b0aa0a1
[INFO] [stderr]     20:     0x558cac2999b9 - std::rt::lang_start::{{closure}}::ha872e056860a20d6
[INFO] [stderr]     21:     0x558cac2bdedd - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hcc45cd78f98d8df0
[INFO] [stderr]                                  at /rustc/16b569057e4d1591b4bee05f10df34000308dedc/library/core/src/ops/function.rs:284:13
[INFO] [stderr]     22:     0x558cac2bdedd - std::panicking::try::do_call::h0e8a45a8981fbc44
[INFO] [stderr]                                  at /rustc/16b569057e4d1591b4bee05f10df34000308dedc/library/std/src/panicking.rs:557:40
[INFO] [stderr]     23:     0x558cac2bdedd - std::panicking::try::hff166e2fdd69e970
[INFO] [stderr]                                  at /rustc/16b569057e4d1591b4bee05f10df34000308dedc/library/std/src/panicking.rs:521:19
[INFO] [stderr]     24:     0x558cac2bdedd - std::panic::catch_unwind::he1cd5ab43d7f98b7
[INFO] [stderr]                                  at /rustc/16b569057e4d1591b4bee05f10df34000308dedc/library/std/src/panic.rs:350:14
[INFO] [stderr]     25:     0x558cac2bdedd - std::rt::lang_start_internal::{{closure}}::hb8c81ea9b0319a57
[INFO] [stderr]                                  at /rustc/16b569057e4d1591b4bee05f10df34000308dedc/library/std/src/rt.rs:142:48
[INFO] [stderr]     26:     0x558cac2bdedd - std::panicking::try::do_call::hd44bbe725bcd65ec
[INFO] [stderr]                                  at /rustc/16b569057e4d1591b4bee05f10df34000308dedc/library/std/src/panicking.rs:557:40
[INFO] [stderr]     27:     0x558cac2bdedd - std::panicking::try::h9470ca690bfc4660
[INFO] [stderr]                                  at /rustc/16b569057e4d1591b4bee05f10df34000308dedc/library/std/src/panicking.rs:521:19
[INFO] [stderr]     28:     0x558cac2bdedd - std::panic::catch_unwind::hed03cbf2baedd41b
[INFO] [stderr]                                  at /rustc/16b569057e4d1591b4bee05f10df34000308dedc/library/std/src/panic.rs:350:14
[INFO] [stderr]     29:     0x558cac2bdedd - std::rt::lang_start_internal::h44082fa052a14e80
[INFO] [stderr]                                  at /rustc/16b569057e4d1591b4bee05f10df34000308dedc/library/std/src/rt.rs:142:20
[INFO] [stderr]     30:     0x558cac299997 - std::rt::lang_start::h8ecc7095b5588094
[INFO] [stderr]     31:     0x558cac29ec55 - main
[INFO] [stderr]     32:     0x7f51b2d39d90 - <unknown>
[INFO] [stderr]     33:     0x7f51b2d39e40 - __libc_start_main
[INFO] [stderr]     34:     0x558cac298715 - _start
[INFO] [stderr]     35:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "3dd83db1b398bfd93b1ddcf3f60d32a876dd1bc9ea916368ae20f445ef1c7a62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3dd83db1b398bfd93b1ddcf3f60d32a876dd1bc9ea916368ae20f445ef1c7a62", kill_on_drop: false }`
[INFO] [stdout] 3dd83db1b398bfd93b1ddcf3f60d32a876dd1bc9ea916368ae20f445ef1c7a62