[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 try#6757d700f93f6d16c8b39cf79e96b019bd570e7d for pr-155299
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fccanvas%2Flibccanvas" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-4-tc2/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-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ccanvas/libccanvas on toolchain 6757d700f93f6d16c8b39cf79e96b019bd570e7d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6757d700f93f6d16c8b39cf79e96b019bd570e7d" "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" "+6757d700f93f6d16c8b39cf79e96b019bd570e7d" "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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+6757d700f93f6d16c8b39cf79e96b019bd570e7d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 82ad5ff7415d2285e1708d73699e9c4d34194ce532a032d79dc67891d6c932a9
[INFO] running `Command { std: "docker" "start" "-a" "82ad5ff7415d2285e1708d73699e9c4d34194ce532a032d79dc67891d6c932a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "82ad5ff7415d2285e1708d73699e9c4d34194ce532a032d79dc67891d6c932a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82ad5ff7415d2285e1708d73699e9c4d34194ce532a032d79dc67891d6c932a9", kill_on_drop: false }`
[INFO] [stdout] 82ad5ff7415d2285e1708d73699e9c4d34194ce532a032d79dc67891d6c932a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+6757d700f93f6d16c8b39cf79e96b019bd570e7d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e660ff519672e0c1be88252879ac3eca5a9878b16cbdd4dbb410f3f3836433b9
[INFO] running `Command { std: "docker" "start" "-a" "e660ff519672e0c1be88252879ac3eca5a9878b16cbdd4dbb410f3f3836433b9", kill_on_drop: false }`
[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]     Checking mio v1.0.3
[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-51fb0260dcf1823f/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (64) 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:     0x5de49e2b3a6a - std[f65180b5728a13b2]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stderr]                                  at /rustc/6757d700f93f6d16c8b39cf79e96b019bd570e7d/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x5de49e2b3a6a - std[f65180b5728a13b2]::backtrace_rs::backtrace::trace_unsynchronized::<std[f65180b5728a13b2]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stderr]                                  at /rustc/6757d700f93f6d16c8b39cf79e96b019bd570e7d/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x5de49e2b3a6a - std[f65180b5728a13b2]::sys::backtrace::_print_fmt
[INFO] [stderr]                                  at /rustc/6757d700f93f6d16c8b39cf79e96b019bd570e7d/library/std/src/sys/backtrace.rs:74:9
[INFO] [stderr]      3:     0x5de49e2b3a6a - <<std[f65180b5728a13b2]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[5d17c4eb4d54177c]::fmt::Display>::fmt
[INFO] [stderr]                                  at /rustc/6757d700f93f6d16c8b39cf79e96b019bd570e7d/library/std/src/sys/backtrace.rs:44:26
[INFO] [stderr]      4:     0x5de49e2c461a - <core[5d17c4eb4d54177c]::fmt::rt::Argument>::fmt
[INFO] [stderr]                                  at /rustc/6757d700f93f6d16c8b39cf79e96b019bd570e7d/library/core/src/fmt/rt.rs:152:76
[INFO] [stderr]      5:     0x5de49e2c461a - core[5d17c4eb4d54177c]::fmt::write
[INFO] [stderr]      6:     0x5de49e2b7402 - std[f65180b5728a13b2]::io::default_write_fmt::<std[f65180b5728a13b2]::sys::stdio::unix::Stderr>
[INFO] [stderr]                                  at /rustc/6757d700f93f6d16c8b39cf79e96b019bd570e7d/library/std/src/io/mod.rs:621:11
[INFO] [stderr]      7:     0x5de49e2b7402 - <std[f65180b5728a13b2]::sys::stdio::unix::Stderr as std[f65180b5728a13b2]::io::Write>::write_fmt
[INFO] [stderr]                                  at /rustc/6757d700f93f6d16c8b39cf79e96b019bd570e7d/library/std/src/io/mod.rs:1976:13
[INFO] [stderr]      8:     0x5de49e29ef3f - <std[f65180b5728a13b2]::sys::backtrace::BacktraceLock>::print
[INFO] [stderr]                                  at /rustc/6757d700f93f6d16c8b39cf79e96b019bd570e7d/library/std/src/sys/backtrace.rs:47:9
[INFO] [stderr]      9:     0x5de49e29ef3f - std[f65180b5728a13b2]::panicking::default_hook::{closure#0}
[INFO] [stderr]                                  at /rustc/6757d700f93f6d16c8b39cf79e96b019bd570e7d/library/std/src/panicking.rs:292:27
[INFO] [stderr]     10:     0x5de49e2afaf1 - std[f65180b5728a13b2]::panicking::default_hook
[INFO] [stderr]                                  at /rustc/6757d700f93f6d16c8b39cf79e96b019bd570e7d/library/std/src/panicking.rs:319:9
[INFO] [stderr]     11:     0x5de49e2afcab - std[f65180b5728a13b2]::panicking::panic_with_hook
[INFO] [stderr]                                  at /rustc/6757d700f93f6d16c8b39cf79e96b019bd570e7d/library/std/src/panicking.rs:825:13
[INFO] [stderr]     12:     0x5de49e29eff8 - std[f65180b5728a13b2]::panicking::panic_handler::{closure#0}
[INFO] [stderr]                                  at /rustc/6757d700f93f6d16c8b39cf79e96b019bd570e7d/library/std/src/panicking.rs:698:13
[INFO] [stderr]     13:     0x5de49e296ae9 - std[f65180b5728a13b2]::sys::backtrace::__rust_end_short_backtrace::<std[f65180b5728a13b2]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]                                  at /rustc/6757d700f93f6d16c8b39cf79e96b019bd570e7d/library/std/src/sys/backtrace.rs:182:18
[INFO] [stderr]     14:     0x5de49e29f7dd - __rustc[7c1b99c3d41abedc]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/6757d700f93f6d16c8b39cf79e96b019bd570e7d/library/std/src/panicking.rs:689:5
[INFO] [stderr]     15:     0x5de49e2c4d0c - core[5d17c4eb4d54177c]::panicking::panic_fmt
[INFO] [stderr]                                  at /rustc/6757d700f93f6d16c8b39cf79e96b019bd570e7d/library/core/src/panicking.rs:80:14
[INFO] [stderr]     16:     0x5de49e2c4ae2 - core[5d17c4eb4d54177c]::result::unwrap_failed
[INFO] [stderr]                                  at /rustc/6757d700f93f6d16c8b39cf79e96b019bd570e7d/library/core/src/result.rs:1867:5
[INFO] [stderr]     17:     0x5de49e282ec6 - build_script_build[2554aa2a0030f5ee]::main
[INFO] [stderr]     18:     0x5de49e2872e3 - <fn() as core[5d17c4eb4d54177c]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     19:     0x5de49e2853a6 - std[f65180b5728a13b2]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stderr]     20:     0x5de49e281bb9 - std[f65180b5728a13b2]::rt::lang_start::<()>::{closure#0}
[INFO] [stderr]     21:     0x5de49e2af134 - <&dyn core[5d17c4eb4d54177c]::ops::function::Fn<(), Output = i32> + core[5d17c4eb4d54177c]::panic::unwind_safe::RefUnwindSafe + core[5d17c4eb4d54177c]::marker::Sync as core[5d17c4eb4d54177c]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                  at /rustc/6757d700f93f6d16c8b39cf79e96b019bd570e7d/library/core/src/ops/function.rs:287:21
[INFO] [stderr]     22:     0x5de49e2af134 - std[f65180b5728a13b2]::panicking::catch_unwind::do_call::<&dyn core[5d17c4eb4d54177c]::ops::function::Fn<(), Output = i32> + core[5d17c4eb4d54177c]::panic::unwind_safe::RefUnwindSafe + core[5d17c4eb4d54177c]::marker::Sync, i32>
[INFO] [stderr]                                  at /rustc/6757d700f93f6d16c8b39cf79e96b019bd570e7d/library/std/src/panicking.rs:581:40
[INFO] [stderr]     23:     0x5de49e2af134 - std[f65180b5728a13b2]::panicking::catch_unwind::<i32, &dyn core[5d17c4eb4d54177c]::ops::function::Fn<(), Output = i32> + core[5d17c4eb4d54177c]::panic::unwind_safe::RefUnwindSafe + core[5d17c4eb4d54177c]::marker::Sync>
[INFO] [stderr]                                  at /rustc/6757d700f93f6d16c8b39cf79e96b019bd570e7d/library/std/src/panicking.rs:544:19
[INFO] [stderr]     24:     0x5de49e2af134 - std[f65180b5728a13b2]::panic::catch_unwind::<&dyn core[5d17c4eb4d54177c]::ops::function::Fn<(), Output = i32> + core[5d17c4eb4d54177c]::panic::unwind_safe::RefUnwindSafe + core[5d17c4eb4d54177c]::marker::Sync, i32>
[INFO] [stderr]                                  at /rustc/6757d700f93f6d16c8b39cf79e96b019bd570e7d/library/std/src/panic.rs:359:14
[INFO] [stderr]     25:     0x5de49e2af134 - std[f65180b5728a13b2]::rt::lang_start_internal::{closure#0}
[INFO] [stderr]                                  at /rustc/6757d700f93f6d16c8b39cf79e96b019bd570e7d/library/std/src/rt.rs:175:24
[INFO] [stderr]     26:     0x5de49e2af134 - std[f65180b5728a13b2]::panicking::catch_unwind::do_call::<std[f65180b5728a13b2]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/6757d700f93f6d16c8b39cf79e96b019bd570e7d/library/std/src/panicking.rs:581:40
[INFO] [stderr]     27:     0x5de49e2af134 - std[f65180b5728a13b2]::panicking::catch_unwind::<isize, std[f65180b5728a13b2]::rt::lang_start_internal::{closure#0}>
[INFO] [stderr]                                  at /rustc/6757d700f93f6d16c8b39cf79e96b019bd570e7d/library/std/src/panicking.rs:544:19
[INFO] [stderr]     28:     0x5de49e2af134 - std[f65180b5728a13b2]::panic::catch_unwind::<std[f65180b5728a13b2]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/6757d700f93f6d16c8b39cf79e96b019bd570e7d/library/std/src/panic.rs:359:14
[INFO] [stderr]     29:     0x5de49e2af134 - std[f65180b5728a13b2]::rt::lang_start_internal
[INFO] [stderr]                                  at /rustc/6757d700f93f6d16c8b39cf79e96b019bd570e7d/library/std/src/rt.rs:171:5
[INFO] [stderr]     30:     0x5de49e281ac1 - std[f65180b5728a13b2]::rt::lang_start::<()>
[INFO] [stderr]     31:     0x5de49e284415 - main
[INFO] [stderr]     32:     0x7dda53aa41ca - <unknown>
[INFO] [stderr]     33:     0x7dda53aa428b - __libc_start_main
[INFO] [stderr]     34:     0x5de49e27f5b5 - _start
[INFO] [stderr]     35:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "e660ff519672e0c1be88252879ac3eca5a9878b16cbdd4dbb410f3f3836433b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e660ff519672e0c1be88252879ac3eca5a9878b16cbdd4dbb410f3f3836433b9", kill_on_drop: false }`
[INFO] [stdout] e660ff519672e0c1be88252879ac3eca5a9878b16cbdd4dbb410f3f3836433b9