[INFO] cloning repository https://github.com/MarkV43/m43lang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MarkV43/m43lang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMarkV43%2Fm43lang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMarkV43%2Fm43lang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 309773d0e0bbbed5499f0b1327427e3c19d46c0b
[INFO] checking MarkV43/m43lang 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%2FMarkV43%2Fm43lang" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/MarkV43/m43lang
[INFO] finished tweaking git repo https://github.com/MarkV43/m43lang
[INFO] tweaked toml for git repo https://github.com/MarkV43/m43lang written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/MarkV43/m43lang 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/MarkV43/m43lang 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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] d80ab7c026e63c656f636bcfd2b104ba56c25754f77474f46b7bbbb0edd83c2e
[INFO] running `Command { std: "docker" "start" "-a" "d80ab7c026e63c656f636bcfd2b104ba56c25754f77474f46b7bbbb0edd83c2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d80ab7c026e63c656f636bcfd2b104ba56c25754f77474f46b7bbbb0edd83c2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d80ab7c026e63c656f636bcfd2b104ba56c25754f77474f46b7bbbb0edd83c2e", kill_on_drop: false }`
[INFO] [stdout] d80ab7c026e63c656f636bcfd2b104ba56c25754f77474f46b7bbbb0edd83c2e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 686bbb708f51fd57fe82c0c9122bfa3d6336d7cb0cc250127df68700d695b410
[INFO] running `Command { std: "docker" "start" "-a" "686bbb708f51fd57fe82c0c9122bfa3d6336d7cb0cc250127df68700d695b410", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling m43lang_derive v0.1.0 (/opt/rustwide/workdir/m43lang_derive)
[INFO] [stderr]     Checking m43lang-visual v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `implementations::*`
[INFO] [stdout]  --> src/logic/structure.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub use implementations::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Option<T>>, Infallible>
[INFO] [stdout]    --> src/logic/structure/implementations.rs:187:20
[INFO] [stdout]     |
[INFO] [stdout] 187 |             cells: vec.try_into().expect("Could not convert vec to grid"),
[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<Vec<Option<T>>, Infallible>
[INFO] [stdout]    --> src/logic/structure/implementations.rs:200:20
[INFO] [stdout]     |
[INFO] [stdout] 200 |               cells: vec
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 201 | |                 .into_iter()
[INFO] [stdout] 202 | |                 .cloned()
[INFO] [stdout] 203 | |                 .collect::<Vec<_>>()
[INFO] [stdout] 204 | |                 .try_into()
[INFO] [stdout]     | |___________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Option<T>>, Infallible>
[INFO] [stdout]    --> src/logic/structure/implementations.rs:269:20
[INFO] [stdout]     |
[INFO] [stdout] 269 |             cells: cells.try_into().expect("Could not convert vec to grid"),
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `m43lang-visual` (lib test) due to 3 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused import: `implementations::*`
[INFO] [stdout]  --> src/logic/structure.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub use implementations::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Option<T>>, Infallible>
[INFO] [stdout]    --> src/logic/structure/implementations.rs:187:20
[INFO] [stdout]     |
[INFO] [stdout] 187 |             cells: vec.try_into().expect("Could not convert vec to grid"),
[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<Vec<Option<T>>, Infallible>
[INFO] [stdout]    --> src/logic/structure/implementations.rs:200:20
[INFO] [stdout]     |
[INFO] [stdout] 200 |               cells: vec
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 201 | |                 .into_iter()
[INFO] [stdout] 202 | |                 .cloned()
[INFO] [stdout] 203 | |                 .collect::<Vec<_>>()
[INFO] [stdout] 204 | |                 .try_into()
[INFO] [stdout]     | |___________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Option<T>>, Infallible>
[INFO] [stdout]    --> src/logic/structure/implementations.rs:269:20
[INFO] [stdout]     |
[INFO] [stdout] 269 |             cells: cells.try_into().expect("Could not convert vec to grid"),
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `m43lang-visual` (lib) due to 3 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "686bbb708f51fd57fe82c0c9122bfa3d6336d7cb0cc250127df68700d695b410", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "686bbb708f51fd57fe82c0c9122bfa3d6336d7cb0cc250127df68700d695b410", kill_on_drop: false }`
[INFO] [stdout] 686bbb708f51fd57fe82c0c9122bfa3d6336d7cb0cc250127df68700d695b410
