[INFO] fetching crate fltk 0.14.2...
[INFO] checking fltk-0.14.2 against try#9c1dcf141bc0875407c4eb36972857bd3db713e2 for pr-81863
[INFO] extracting crate fltk 0.14.2 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate fltk 0.14.2 on toolchain 9c1dcf141bc0875407c4eb36972857bd3db713e2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fltk 0.14.2
[INFO] finished tweaking crates.io crate fltk 0.14.2
[INFO] tweaked toml for crates.io crate fltk 0.14.2 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate fltk 0.14.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fltk-derive v0.14.2
[INFO] [stderr]   Downloaded fltk-sys v0.14.2
[INFO] [stderr]   Downloaded gl_loader v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c7e6d55b1d6faa97816e3bebb3e745c7566f391b1a815abc783a154252dd3266
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c7e6d55b1d6faa97816e3bebb3e745c7566f391b1a815abc783a154252dd3266", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c7e6d55b1d6faa97816e3bebb3e745c7566f391b1a815abc783a154252dd3266", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7e6d55b1d6faa97816e3bebb3e745c7566f391b1a815abc783a154252dd3266", kill_on_drop: false }`
[INFO] [stdout] c7e6d55b1d6faa97816e3bebb3e745c7566f391b1a815abc783a154252dd3266
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ae83a779d0a7d99e9de4b36c666f89cbb6342861aa45ca65ada9c9ce5713a878
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ae83a779d0a7d99e9de4b36c666f89cbb6342861aa45ca65ada9c9ce5713a878", kill_on_drop: false }`
[INFO] [stderr]    Compiling fltk-sys v0.14.2
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]     Checking raw-window-handle v0.3.3
[INFO] [stderr]    Compiling fltk-derive v0.14.2
[INFO] [stderr]     Checking fltk v0.14.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: couldn't read examples/../../screenshots/RustLogo.svg: No such file or directory (os error 2)
[INFO] [stdout]  --> examples/widget_table.rs:3:19
[INFO] [stdout]   |
[INFO] [stdout] 3 | const IMG: &str = include_str!("../../screenshots/RustLogo.svg");
[INFO] [stdout]   |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `btn`
[INFO] [stdout]  --> examples/composite_widgets.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     btn: button::Button,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fltk`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "ae83a779d0a7d99e9de4b36c666f89cbb6342861aa45ca65ada9c9ce5713a878", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae83a779d0a7d99e9de4b36c666f89cbb6342861aa45ca65ada9c9ce5713a878", kill_on_drop: false }`
[INFO] [stdout] ae83a779d0a7d99e9de4b36c666f89cbb6342861aa45ca65ada9c9ce5713a878