[INFO] cloning repository https://github.com/ccanvas/libccanvas
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ccanvas/libccanvas" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fccanvas%2Flibccanvas", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fccanvas%2Flibccanvas'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a8419f8768b81bcf96379f5f87a013daed025827
[INFO] checking ccanvas/libccanvas against master#82310651b93a594a3fd69015e1562186a080d94c for pr-145770
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fccanvas%2Flibccanvas" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-4-tc1/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/ccanvas/libccanvas
[INFO] finished tweaking git repo https://github.com/ccanvas/libccanvas
[INFO] tweaked toml for git repo https://github.com/ccanvas/libccanvas written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ccanvas/libccanvas on toolchain 82310651b93a594a3fd69015e1562186a080d94c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+82310651b93a594a3fd69015e1562186a080d94c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ccanvas/libccanvas 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" "+82310651b93a594a3fd69015e1562186a080d94c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/ccanvas/rust-bindings`
[INFO] [stderr]     Updating git repository `https://github.com/ccanvas/ccanvas-packet-build`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libc v0.2.169
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+82310651b93a594a3fd69015e1562186a080d94c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0841e424c16feda2bc12aafbf0be7dde422090d2e85cc64efb0962fe2a88f824
[INFO] running `Command { std: "docker" "start" "-a" "0841e424c16feda2bc12aafbf0be7dde422090d2e85cc64efb0962fe2a88f824", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0841e424c16feda2bc12aafbf0be7dde422090d2e85cc64efb0962fe2a88f824", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0841e424c16feda2bc12aafbf0be7dde422090d2e85cc64efb0962fe2a88f824", kill_on_drop: false }`
[INFO] [stdout] 0841e424c16feda2bc12aafbf0be7dde422090d2e85cc64efb0962fe2a88f824
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+82310651b93a594a3fd69015e1562186a080d94c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1acf368455d60d49974d6ba2a1498069a13148eada66bcb7e0e2b2010418080e
[INFO] running `Command { std: "docker" "start" "-a" "1acf368455d60d49974d6ba2a1498069a13148eada66bcb7e0e2b2010418080e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]    Compiling ccanvas-bindings v0.1.0 (https://github.com/ccanvas/rust-bindings?rev=0548e40#0548e400)
[INFO] [stderr]    Compiling ccanvas-packet-build v0.1.0 (https://github.com/ccanvas/ccanvas-packet-build?rev=81a26e0#81a26e07)
[INFO] [stderr] error: failed to run custom build command for `ccanvas-bindings v0.1.0 (https://github.com/ccanvas/rust-bindings?rev=0548e40#0548e400)`
[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/ccanvas-bindings-83ee5b775590adc5/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' panicked at /opt/rustwide/cargo-home/git/checkouts/rust-bindings-4646162c2f9ab0e6/0548e40/build.rs:51:14:
[INFO] [stderr]   called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x63273f903932 - std::backtrace_rs::backtrace::libunwind::trace::h76ea176a64426f0f
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x63273f903932 - std::backtrace_rs::backtrace::trace_unsynchronized::h0830675862e8e766
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x63273f903932 - std::sys::backtrace::_print_fmt::hba1ccef63faaa048
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/std/src/sys/backtrace.rs:66:9
[INFO] [stderr]      3:     0x63273f903932 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hca516e2c7056a217
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/std/src/sys/backtrace.rs:39:26
[INFO] [stderr]      4:     0x63273f91fd43 - core::fmt::rt::Argument::fmt::ha510764ac9e77b66
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/core/src/fmt/rt.rs:173:76
[INFO] [stderr]      5:     0x63273f91fd43 - core::fmt::write::h97a802838d45fe7e
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/core/src/fmt/mod.rs:1469:25
[INFO] [stderr]      6:     0x63273f9012f3 - std::io::default_write_fmt::hb63ad55b2aa53928
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x63273f9012f3 - std::io::Write::write_fmt::h6b2df461464d9a05
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/std/src/io/mod.rs:1954:13
[INFO] [stderr]      8:     0x63273f903782 - std::sys::backtrace::BacktraceLock::print::h81c102a9ac0a1bc7
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/std/src/sys/backtrace.rs:42:9
[INFO] [stderr]      9:     0x63273f9049f3 - std::panicking::default_hook::{{closure}}::h9934714bf98b056d
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/std/src/panicking.rs:300:27
[INFO] [stderr]     10:     0x63273f9047d5 - std::panicking::default_hook::hb31a4fc725ffcf0a
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/std/src/panicking.rs:327:9
[INFO] [stderr]     11:     0x63273f9052c5 - std::panicking::rust_panic_with_hook::h8df5393cb811c708
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/std/src/panicking.rs:833:13
[INFO] [stderr]     12:     0x63273f90515a - std::panicking::begin_panic_handler::{{closure}}::h73dc0a59c2d3b9c7
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/std/src/panicking.rs:706:13
[INFO] [stderr]     13:     0x63273f903e29 - std::sys::backtrace::__rust_end_short_backtrace::h9eb84a109f69f8ca
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/std/src/sys/backtrace.rs:174:18
[INFO] [stderr]     14:     0x63273f904ded - __rustc[98c2592f34d7b78b]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/std/src/panicking.rs:697:5
[INFO] [stderr]     15:     0x63273f91f010 - core::panicking::panic_fmt::hb0df011123225e8b
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/core/src/panicking.rs:75:14
[INFO] [stderr]     16:     0x63273f91f3a6 - core::result::unwrap_failed::h15fa24b59c94aa17
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/core/src/result.rs:1761:5
[INFO] [stderr]     17:     0x63273f8db75a - build_script_build::main::hc84d7a7e84c8970c
[INFO] [stderr]     18:     0x63273f8d7993 - core::ops::function::FnOnce::call_once::h492cc1298be024ff
[INFO] [stderr]     19:     0x63273f8dcc16 - std::sys::backtrace::__rust_begin_short_backtrace::hf25633b22d78be7a
[INFO] [stderr]     20:     0x63273f8d7639 - std::rt::lang_start::{{closure}}::ha1adcc0eb17972a9
[INFO] [stderr]     21:     0x63273f8fe690 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h0bcac900efc89129
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/core/src/ops/function.rs:290:21
[INFO] [stderr]     22:     0x63273f8fe690 - std::panicking::catch_unwind::do_call::hfadc8e58bd88a07a
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/std/src/panicking.rs:589:40
[INFO] [stderr]     23:     0x63273f8fe690 - std::panicking::catch_unwind::h44c20dc1edb63a1e
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/std/src/panicking.rs:552:19
[INFO] [stderr]     24:     0x63273f8fe690 - std::panic::catch_unwind::hed574ee6107b8e15
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/std/src/panic.rs:359:14
[INFO] [stderr]     25:     0x63273f8fe690 - std::rt::lang_start_internal::{{closure}}::h7f49669407df0483
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/std/src/rt.rs:175:24
[INFO] [stderr]     26:     0x63273f8fe690 - std::panicking::catch_unwind::do_call::hdc3b107dc7611175
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/std/src/panicking.rs:589:40
[INFO] [stderr]     27:     0x63273f8fe690 - std::panicking::catch_unwind::h50fbac1cdf73dd69
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/std/src/panicking.rs:552:19
[INFO] [stderr]     28:     0x63273f8fe690 - std::panic::catch_unwind::h061b64ee85b76832
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/std/src/panic.rs:359:14
[INFO] [stderr]     29:     0x63273f8fe690 - std::rt::lang_start_internal::h935ec80c2dc417b9
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/std/src/rt.rs:171:5
[INFO] [stderr]     30:     0x63273f8d7621 - std::rt::lang_start::hec6c8cbed1ed636d
[INFO] [stderr]     31:     0x63273f8dc645 - main
[INFO] [stderr]     32:     0x79c4322461ca - <unknown>
[INFO] [stderr]     33:     0x79c43224628b - __libc_start_main
[INFO] [stderr]     34:     0x63273f8d6ac5 - _start
[INFO] [stderr]     35:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "1acf368455d60d49974d6ba2a1498069a13148eada66bcb7e0e2b2010418080e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1acf368455d60d49974d6ba2a1498069a13148eada66bcb7e0e2b2010418080e", kill_on_drop: false }`
[INFO] [stdout] 1acf368455d60d49974d6ba2a1498069a13148eada66bcb7e0e2b2010418080e