[INFO] fetching crate robar 1.0.0...
[INFO] checking robar-1.0.0 against try#07fecb9cf34c4979a772ba38c99d6d9144768413 for pr-87710
[INFO] extracting crate robar 1.0.0 into /workspace/builds/worker-79/source
[INFO] validating manifest of crates.io crate robar 1.0.0 on toolchain 07fecb9cf34c4979a772ba38c99d6d9144768413
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate robar 1.0.0
[INFO] finished tweaking crates.io crate robar 1.0.0
[INFO] tweaked toml for crates.io crate robar 1.0.0 written to /workspace/builds/worker-79/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "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-79/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/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" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d383ae8a2d216d69fc7e3bdb7a5ad5cbc07ac945a0349b17e5d6432c2bdd9f49
[INFO] running `Command { std: "docker" "start" "-a" "d383ae8a2d216d69fc7e3bdb7a5ad5cbc07ac945a0349b17e5d6432c2bdd9f49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d383ae8a2d216d69fc7e3bdb7a5ad5cbc07ac945a0349b17e5d6432c2bdd9f49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d383ae8a2d216d69fc7e3bdb7a5ad5cbc07ac945a0349b17e5d6432c2bdd9f49", kill_on_drop: false }`
[INFO] [stdout] d383ae8a2d216d69fc7e3bdb7a5ad5cbc07ac945a0349b17e5d6432c2bdd9f49
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/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" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dc5de7a67b805974f443f7c3248aa9bcb02744ccd0f10e22207e35854e5090fb
[INFO] running `Command { std: "docker" "start" "-a" "dc5de7a67b805974f443f7c3248aa9bcb02744ccd0f10e22207e35854e5090fb", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.100
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling serde v1.0.129
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling xcb v0.8.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr] error: failed to run custom build command for `xcb v0.8.2`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/xcb-64e152ba866fb1ab/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   error occured in handler:  ('request: ', ('xcb', 'NoOperation'))
[INFO] [stderr]   Traceback (most recent call last):
[INFO] [stderr]     File "/opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/xcb-0.8.2/rs_client.py", line 2448, in <module>
[INFO] [stderr]       module.generate()
[INFO] [stderr]     File "/opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/xcb-0.8.2/xcbgen/state.py", line 108, in generate
[INFO] [stderr]       self.close()
[INFO] [stderr]     File "/opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/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/github.com-1ecc6299db9ec823/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/github.com-1ecc6299db9ec823/xcb-0.8.2/src/ffi/xproto.rs'
[INFO] [stderr]   thread 'main' panicked at 'processing of /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/xcb-0.8.2/xml/xproto.xml returned non-zero (1)', /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/xcb-0.8.2/build.rs:75:17
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x55f78644793c - std::backtrace_rs::backtrace::libunwind::trace::ha21b6ba3016b6364
[INFO] [stderr]                                  at /rustc/07fecb9cf34c4979a772ba38c99d6d9144768413/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stderr]      1:     0x55f78644793c - std::backtrace_rs::backtrace::trace_unsynchronized::hf515241a118c4e5a
[INFO] [stderr]                                  at /rustc/07fecb9cf34c4979a772ba38c99d6d9144768413/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x55f78644793c - std::sys_common::backtrace::_print_fmt::h339cd474d88b8467
[INFO] [stderr]                                  at /rustc/07fecb9cf34c4979a772ba38c99d6d9144768413/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x55f78644793c - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h06b8f714a0700be1
[INFO] [stderr]                                  at /rustc/07fecb9cf34c4979a772ba38c99d6d9144768413/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x55f78646416c - core::fmt::write::h9a6d9c74526a6c1b
[INFO] [stderr]                                  at /rustc/07fecb9cf34c4979a772ba38c99d6d9144768413/library/core/src/fmt/mod.rs:1150:17
[INFO] [stderr]      5:     0x55f786445275 - std::io::Write::write_fmt::hb1c61d571fcd8cbf
[INFO] [stderr]                                  at /rustc/07fecb9cf34c4979a772ba38c99d6d9144768413/library/std/src/io/mod.rs:1667:15
[INFO] [stderr]      6:     0x55f786449160 - std::sys_common::backtrace::_print::hcd1fe1237ea0c752
[INFO] [stderr]                                  at /rustc/07fecb9cf34c4979a772ba38c99d6d9144768413/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x55f786449160 - std::sys_common::backtrace::print::hae7d6625a78cd32e
[INFO] [stderr]                                  at /rustc/07fecb9cf34c4979a772ba38c99d6d9144768413/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x55f786449160 - std::panicking::default_hook::{{closure}}::h9a7fffa4e6b396ed
[INFO] [stderr]                                  at /rustc/07fecb9cf34c4979a772ba38c99d6d9144768413/library/std/src/panicking.rs:210:50
[INFO] [stderr]      9:     0x55f786448d1b - std::panicking::default_hook::h5dc58e323cddd123
[INFO] [stderr]                                  at /rustc/07fecb9cf34c4979a772ba38c99d6d9144768413/library/std/src/panicking.rs:227:9
[INFO] [stderr]     10:     0x55f786449814 - std::panicking::rust_panic_with_hook::hbef17e4338d7de57
[INFO] [stderr]                                  at /rustc/07fecb9cf34c4979a772ba38c99d6d9144768413/library/std/src/panicking.rs:624:17
[INFO] [stderr]     11:     0x55f7864492f0 - std::panicking::begin_panic_handler::{{closure}}::hd8a92a4b1c3baae0
[INFO] [stderr]                                  at /rustc/07fecb9cf34c4979a772ba38c99d6d9144768413/library/std/src/panicking.rs:521:13
[INFO] [stderr]     12:     0x55f786447e04 - std::sys_common::backtrace::__rust_end_short_backtrace::ha5ac263a7609ace8
[INFO] [stderr]                                  at /rustc/07fecb9cf34c4979a772ba38c99d6d9144768413/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]     13:     0x55f786449259 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/07fecb9cf34c4979a772ba38c99d6d9144768413/library/std/src/panicking.rs:517:5
[INFO] [stderr]     14:     0x55f786423b4b - std::panicking::begin_panic_fmt::h1d40aa0afd20effe
[INFO] [stderr]                                  at /rustc/07fecb9cf34c4979a772ba38c99d6d9144768413/library/std/src/panicking.rs:460:5
[INFO] [stderr]     15:     0x55f786427637 - build_script_build::main::{{closure}}::h1d33c788ca4dbfea
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/xcb-0.8.2/build.rs:75:17
[INFO] [stderr]     16:     0x55f7864262fb - build_script_build::visit_xml::hea8dd16b9aff9fbc
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/xcb-0.8.2/build.rs:20:44
[INFO] [stderr]     17:     0x55f786426a23 - build_script_build::main::h804f58d0e2e3755b
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/xcb-0.8.2/build.rs:56:5
[INFO] [stderr]     18:     0x55f78642cddb - core::ops::function::FnOnce::call_once::h10bdb658c5f3641b
[INFO] [stderr]                                  at /rustc/07fecb9cf34c4979a772ba38c99d6d9144768413/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     19:     0x55f786427eae - std::sys_common::backtrace::__rust_begin_short_backtrace::h08b32e32090ffe9d
[INFO] [stderr]                                  at /rustc/07fecb9cf34c4979a772ba38c99d6d9144768413/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stderr]     20:     0x55f78642c871 - std::rt::lang_start::{{closure}}::h4bc245a2ad7a8c8a
[INFO] [stderr]                                  at /rustc/07fecb9cf34c4979a772ba38c99d6d9144768413/library/std/src/rt.rs:63:18
[INFO] [stderr]     21:     0x55f786449d1a - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hc9bc8961e4809a14
[INFO] [stderr]                                  at /rustc/07fecb9cf34c4979a772ba38c99d6d9144768413/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     22:     0x55f786449d1a - std::panicking::try::do_call::h6f00e12df2af6579
[INFO] [stderr]                                  at /rustc/07fecb9cf34c4979a772ba38c99d6d9144768413/library/std/src/panicking.rs:403:40
[INFO] [stderr]     23:     0x55f786449d1a - std::panicking::try::h588c31a0a9a8ad2c
[INFO] [stderr]                                  at /rustc/07fecb9cf34c4979a772ba38c99d6d9144768413/library/std/src/panicking.rs:367:19
[INFO] [stderr]     24:     0x55f786449d1a - std::panic::catch_unwind::h8ebc4fcb0e51bec0
[INFO] [stderr]                                  at /rustc/07fecb9cf34c4979a772ba38c99d6d9144768413/library/std/src/panic.rs:129:14
[INFO] [stderr]     25:     0x55f786449d1a - std::rt::lang_start_internal::{{closure}}::had93e50fbfd893a1
[INFO] [stderr]                                  at /rustc/07fecb9cf34c4979a772ba38c99d6d9144768413/library/std/src/rt.rs:45:48
[INFO] [stderr]     26:     0x55f786449d1a - std::panicking::try::do_call::hf70c5056d8b410b7
[INFO] [stderr]                                  at /rustc/07fecb9cf34c4979a772ba38c99d6d9144768413/library/std/src/panicking.rs:403:40
[INFO] [stderr]     27:     0x55f786449d1a - std::panicking::try::h0c680320de5deb84
[INFO] [stderr]                                  at /rustc/07fecb9cf34c4979a772ba38c99d6d9144768413/library/std/src/panicking.rs:367:19
[INFO] [stderr]     28:     0x55f786449d1a - std::panic::catch_unwind::h7b94a99f13366c53
[INFO] [stderr]                                  at /rustc/07fecb9cf34c4979a772ba38c99d6d9144768413/library/std/src/panic.rs:129:14
[INFO] [stderr]     29:     0x55f786449d1a - std::rt::lang_start_internal::hca14fb2549072049
[INFO] [stderr]                                  at /rustc/07fecb9cf34c4979a772ba38c99d6d9144768413/library/std/src/rt.rs:45:20
[INFO] [stderr]     30:     0x55f78642c840 - std::rt::lang_start::h14913560a391679a
[INFO] [stderr]                                  at /rustc/07fecb9cf34c4979a772ba38c99d6d9144768413/library/std/src/rt.rs:62:5
[INFO] [stderr]     31:     0x55f78642767c - main
[INFO] [stderr]     32:     0x7ff6685ee0b3 - __libc_start_main
[INFO] [stderr]     33:     0x55f78642491e - _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" "dc5de7a67b805974f443f7c3248aa9bcb02744ccd0f10e22207e35854e5090fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc5de7a67b805974f443f7c3248aa9bcb02744ccd0f10e22207e35854e5090fb", kill_on_drop: false }`
[INFO] [stdout] dc5de7a67b805974f443f7c3248aa9bcb02744ccd0f10e22207e35854e5090fb