[INFO] cloning repository https://github.com/mrandri19/lettera
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mrandri19/lettera" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrandri19%2Flettera", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrandri19%2Flettera'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 449093d3b319065321df069b2bd58bf3795c5c38
[INFO] testing mrandri19/lettera against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrandri19%2Flettera" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mrandri19/lettera on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mrandri19/lettera
[INFO] removed path dependency gl from git repo https://github.com/mrandri19/lettera
[INFO] finished tweaking git repo https://github.com/mrandri19/lettera
[INFO] tweaked toml for git repo https://github.com/mrandri19/lettera written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/mrandri19/lettera already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: dependency (gl) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: the lock file /workspace/builds/worker-12/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "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" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: dependency (gl) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] af4f531f3fcc2e0345733b7fc8f9c6339e8b1687fab3749c0ab152dcdbceb9a8
[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" "af4f531f3fcc2e0345733b7fc8f9c6339e8b1687fab3749c0ab152dcdbceb9a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "af4f531f3fcc2e0345733b7fc8f9c6339e8b1687fab3749c0ab152dcdbceb9a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af4f531f3fcc2e0345733b7fc8f9c6339e8b1687fab3749c0ab152dcdbceb9a8", kill_on_drop: false }`
[INFO] [stdout] af4f531f3fcc2e0345733b7fc8f9c6339e8b1687fab3749c0ab152dcdbceb9a8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5c880778129cc6d3e25830257afdea17e73971fd6d9a9fbc1bc566fb94c0448b
[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" "5c880778129cc6d3e25830257afdea17e73971fd6d9a9fbc1bc566fb94c0448b", kill_on_drop: false }`
[INFO] [stderr] warning: dependency (gl) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling servo-freetype-sys v4.0.5
[INFO] [stderr]    Compiling expat-sys v2.1.6
[INFO] [stderr]    Compiling gl_generator v0.14.0
[INFO] [stderr]    Compiling euclid v0.20.14
[INFO] [stderr]    Compiling wayland-commons v0.21.13
[INFO] [stderr]    Compiling osmesa-sys v0.1.2
[INFO] [stderr]    Compiling rusttype v0.7.9
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling andrew v0.2.1
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling wayland-client v0.21.13
[INFO] [stderr]    Compiling servo-fontconfig-sys v4.0.9
[INFO] [stderr]    Compiling freetype v0.4.1
[INFO] [stderr]    Compiling servo-fontconfig v0.4.0
[INFO] [stderr]    Compiling glutin_egl_sys v0.1.5
[INFO] [stderr]    Compiling glutin_glx_sys v0.1.7
[INFO] [stderr]    Compiling gl v0.14.0
[INFO] [stderr]    Compiling lyon_geom v0.14.1
[INFO] [stderr]    Compiling wayland-protocols v0.21.13
[INFO] [stderr]    Compiling lyon_path v0.14.0
[INFO] [stderr]    Compiling font-kit v0.4.0
[INFO] [stderr]    Compiling smithay-client-toolkit v0.4.6
[INFO] [stderr]    Compiling winit v0.19.5
[INFO] [stderr]    Compiling glutin v0.21.2
[INFO] [stderr]    Compiling lettera v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/main.rs:122:34
[INFO] [stdout]     |
[INFO] [stdout] 122 |         gl::DebugMessageCallback(debug_message_callback::callback, std::ptr::null())
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                  |
[INFO] [stdout]     |                                  expected enum `Option`, found fn item
[INFO] [stdout]     |                                  help: try using a variant of the expected enum: `Some(debug_message_callback::callback)`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected enum `Option<extern "system" fn(u32, u32, u32, u32, i32, *const i8, *mut c_void)>`
[INFO] [stdout]             found fn item `extern "system" fn(u32, u32, u32, u32, i32, *const i8, *mut c_void) {callback}`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lettera`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "5c880778129cc6d3e25830257afdea17e73971fd6d9a9fbc1bc566fb94c0448b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c880778129cc6d3e25830257afdea17e73971fd6d9a9fbc1bc566fb94c0448b", kill_on_drop: false }`
[INFO] [stdout] 5c880778129cc6d3e25830257afdea17e73971fd6d9a9fbc1bc566fb94c0448b