[INFO] fetching crate fltk 1.1.16...
[INFO] testing fltk-1.1.16 against 1.55.0 for beta-1.56-1
[INFO] extracting crate fltk 1.1.16 into /workspace/builds/worker-66/source
[INFO] validating manifest of crates.io crate fltk 1.1.16 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fltk 1.1.16
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate fltk 1.1.16
[INFO] tweaked toml for crates.io crate fltk 1.1.16 written to /workspace/builds/worker-66/source/Cargo.toml
[INFO] crate crates.io crate fltk 1.1.16 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fbcf413e20709ce5f5b7a8c55a6f7640128db7c74e7748acf61f7bed22df0930
[INFO] running `Command { std: "docker" "start" "-a" "fbcf413e20709ce5f5b7a8c55a6f7640128db7c74e7748acf61f7bed22df0930", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fbcf413e20709ce5f5b7a8c55a6f7640128db7c74e7748acf61f7bed22df0930", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbcf413e20709ce5f5b7a8c55a6f7640128db7c74e7748acf61f7bed22df0930", kill_on_drop: false }`
[INFO] [stdout] fbcf413e20709ce5f5b7a8c55a6f7640128db7c74e7748acf61f7bed22df0930
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a54827d133d165289ad142c996f0e610199a879fd4301911e9375a77bdc5ea48
[INFO] running `Command { std: "docker" "start" "-a" "a54827d133d165289ad142c996f0e610199a879fd4301911e9375a77bdc5ea48", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling cc v1.0.70
[INFO] [stderr]    Compiling raw-window-handle v0.3.3
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]    Compiling fltk-sys v1.1.16
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling fltk-derive v1.1.16
[INFO] [stderr]    Compiling fltk v1.1.16 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 12s
[INFO] running `Command { std: "docker" "inspect" "a54827d133d165289ad142c996f0e610199a879fd4301911e9375a77bdc5ea48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a54827d133d165289ad142c996f0e610199a879fd4301911e9375a77bdc5ea48", kill_on_drop: false }`
[INFO] [stdout] a54827d133d165289ad142c996f0e610199a879fd4301911e9375a77bdc5ea48
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 83b43f6ec2349b05bf967436557ae6a5914beda950a49717094797aaf3c73af1
[INFO] running `Command { std: "docker" "start" "-a" "83b43f6ec2349b05bf967436557ae6a5914beda950a49717094797aaf3c73af1", kill_on_drop: false }`
[INFO] [stderr]    Compiling fltk v1.1.16 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `fltk`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name calculator2 --edition=2018 examples/calculator2.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type bin --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="raw-window-handle"' -C metadata=f1d5e3a588dbb640 -C extra-filename=-f1d5e3a588dbb640 --out-dir /opt/rustwide/target/debug/examples -L dependency=/opt/rustwide/target/debug/deps --extern bitflags=/opt/rustwide/target/debug/deps/libbitflags-f947290fec4feb2c.rlib --extern fltk=/opt/rustwide/target/debug/deps/libfltk-1e70a9fedf3a3875.rlib --extern fltk_derive=/opt/rustwide/target/debug/deps/libfltk_derive-8ccb398265146595.so --extern fltk_sys=/opt/rustwide/target/debug/deps/libfltk_sys-eea0679266fa6165.rlib --extern raw_window_handle=/opt/rustwide/target/debug/deps/libraw_window_handle-15dd64529aad5498.rlib --cap-lints=warn -L native=/opt/rustwide/target/debug/build/fltk-sys-de24262e81ba751b/out/build -L native=/opt/rustwide/target/debug/build/fltk-sys-de24262e81ba751b/out/build/Release -L native=/opt/rustwide/target/debug/build/fltk-sys-de24262e81ba751b/out/lib -L native=/opt/rustwide/target/debug/build/fltk-sys-de24262e81ba751b/out/lib64 -L native=/opt/rustwide/target/debug/build/fltk-sys-de24262e81ba751b/out/lib/Release -L native=/opt/rustwide/target/debug/build/fltk-sys-de24262e81ba751b/out/lib64/Release` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "83b43f6ec2349b05bf967436557ae6a5914beda950a49717094797aaf3c73af1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83b43f6ec2349b05bf967436557ae6a5914beda950a49717094797aaf3c73af1", kill_on_drop: false }`
[INFO] [stdout] 83b43f6ec2349b05bf967436557ae6a5914beda950a49717094797aaf3c73af1