[INFO] cloning repository https://github.com/vyacheslavhere/butterfly
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vyacheslavhere/butterfly" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvyacheslavhere%2Fbutterfly", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvyacheslavhere%2Fbutterfly'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2b931eec4c44566199976f11cd62ed21f8cb280b
[INFO] checking vyacheslavhere/butterfly against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvyacheslavhere%2Fbutterfly" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/vyacheslavhere/butterfly
[INFO] finished tweaking git repo https://github.com/vyacheslavhere/butterfly
[INFO] tweaked toml for git repo https://github.com/vyacheslavhere/butterfly written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/vyacheslavhere/butterfly on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/vyacheslavhere/butterfly 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9f3b967c96bcceeeeb56a252621df97050828cf1b327183c751e8ca6d7e9d903
[INFO] running `Command { std: "docker" "start" "-a" "9f3b967c96bcceeeeb56a252621df97050828cf1b327183c751e8ca6d7e9d903", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9f3b967c96bcceeeeb56a252621df97050828cf1b327183c751e8ca6d7e9d903", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f3b967c96bcceeeeb56a252621df97050828cf1b327183c751e8ca6d7e9d903", kill_on_drop: false }`
[INFO] [stdout] 9f3b967c96bcceeeeb56a252621df97050828cf1b327183c751e8ca6d7e9d903
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] df19798aebcc85825b4ae03eee8aae1262b5f040f476215322d871d0420d4ac9
[INFO] running `Command { std: "docker" "start" "-a" "df19798aebcc85825b4ae03eee8aae1262b5f040f476215322d871d0420d4ac9", kill_on_drop: false }`
[INFO] [stderr]    Compiling version-compare v0.1.1
[INFO] [stderr]    Compiling sdl2 v0.38.0
[INFO] [stderr]    Compiling sdl2-sys v0.38.0
[INFO] [stderr]     Checking butterfly v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<Surface<'_>, !>
[INFO] [stdout]    --> src/lib.rs:174:19
[INFO] [stdout]     |
[INFO] [stdout] 174 |       let surface = (*SDL2.fonts)[font_id]
[INFO] [stdout]     |  ___________________^
[INFO] [stdout] 175 | |         .render((*text).clone().as_str())
[INFO] [stdout] 176 | |         .blended(Color::RGB(r, g, b))
[INFO] [stdout] 177 | |         .map_err(|e| panic!("[butterfly] failed to render text: {}", e))
[INFO] [stdout]     | |________________________________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Texture<'_>, !>
[INFO] [stdout]    --> src/lib.rs:180:19
[INFO] [stdout]     |
[INFO] [stdout] 180 |       let texture = (*SDL2.texture_creator).create_texture_from_surface(
[INFO] [stdout]     |  ___________________^
[INFO] [stdout] 181 | |         &surface,
[INFO] [stdout] 182 | |     ).map_err(|e| panic!("[butterfly] failed to create texture from surface: {}", e)).unwrap();
[INFO] [stdout]     | |_____________________________________________________________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `butterfly` (lib test) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<Surface<'_>, !>
[INFO] [stdout]    --> src/lib.rs:174:19
[INFO] [stdout]     |
[INFO] [stdout] 174 |       let surface = (*SDL2.fonts)[font_id]
[INFO] [stdout]     |  ___________________^
[INFO] [stdout] 175 | |         .render((*text).clone().as_str())
[INFO] [stdout] 176 | |         .blended(Color::RGB(r, g, b))
[INFO] [stdout] 177 | |         .map_err(|e| panic!("[butterfly] failed to render text: {}", e))
[INFO] [stdout]     | |________________________________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Texture<'_>, !>
[INFO] [stdout]    --> src/lib.rs:180:19
[INFO] [stdout]     |
[INFO] [stdout] 180 |       let texture = (*SDL2.texture_creator).create_texture_from_surface(
[INFO] [stdout]     |  ___________________^
[INFO] [stdout] 181 | |         &surface,
[INFO] [stdout] 182 | |     ).map_err(|e| panic!("[butterfly] failed to create texture from surface: {}", e)).unwrap();
[INFO] [stdout]     | |_____________________________________________________________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `butterfly` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "df19798aebcc85825b4ae03eee8aae1262b5f040f476215322d871d0420d4ac9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df19798aebcc85825b4ae03eee8aae1262b5f040f476215322d871d0420d4ac9", kill_on_drop: false }`
[INFO] [stdout] df19798aebcc85825b4ae03eee8aae1262b5f040f476215322d871d0420d4ac9