[INFO] fetching crate griditer 0.1.0...
[INFO] checking griditer-0.1.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate griditer 0.1.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate griditer 0.1.0
[INFO] finished tweaking crates.io crate griditer 0.1.0
[INFO] tweaked toml for crates.io crate griditer 0.1.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate griditer 0.1.0 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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] 1ea33897d306fc0ab98b4fcabd863727fd78c810b7fb25873b0f72926f9de755
[INFO] running `Command { std: "docker" "start" "-a" "1ea33897d306fc0ab98b4fcabd863727fd78c810b7fb25873b0f72926f9de755", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1ea33897d306fc0ab98b4fcabd863727fd78c810b7fb25873b0f72926f9de755", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ea33897d306fc0ab98b4fcabd863727fd78c810b7fb25873b0f72926f9de755", kill_on_drop: false }`
[INFO] [stdout] 1ea33897d306fc0ab98b4fcabd863727fd78c810b7fb25873b0f72926f9de755
[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] d39eb843103678b43d1cfdf114b11ee8236fe73cae8651604b857e41f310ca14
[INFO] running `Command { std: "docker" "start" "-a" "d39eb843103678b43d1cfdf114b11ee8236fe73cae8651604b857e41f310ca14", kill_on_drop: false }`
[INFO] [stderr]     Checking griditer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<i8, Infallible>
[INFO] [stdout]   --> src/coord.rs:62:17
[INFO] [stdout]    |
[INFO] [stdout] 62 |                 value.try_into()
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 95 | impl_coord!(i8, i8);
[INFO] [stdout]    | ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]    = note: this error originates in the macro `impl_coord` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i8, Infallible>
[INFO] [stdout]   --> src/coord.rs:71:17
[INFO] [stdout]    |
[INFO] [stdout] 71 |                 self.try_into()
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 95 | impl_coord!(i8, i8);
[INFO] [stdout]    | ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `impl_coord` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i16, Infallible>
[INFO] [stdout]   --> src/coord.rs:62:17
[INFO] [stdout]    |
[INFO] [stdout] 62 |                 value.try_into()
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 98 | impl_coord!(i16, i16);
[INFO] [stdout]    | --------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `impl_coord` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i16, Infallible>
[INFO] [stdout]   --> src/coord.rs:71:17
[INFO] [stdout]    |
[INFO] [stdout] 71 |                 self.try_into()
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 98 | impl_coord!(i16, i16);
[INFO] [stdout]    | --------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `impl_coord` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]    --> src/coord.rs:62:17
[INFO] [stdout]     |
[INFO] [stdout]  62 |                 value.try_into()
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 101 | impl_coord!(i32, i32);
[INFO] [stdout]     | --------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `impl_coord` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]    --> src/coord.rs:71:17
[INFO] [stdout]     |
[INFO] [stdout]  71 |                 self.try_into()
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 101 | impl_coord!(i32, i32);
[INFO] [stdout]     | --------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `impl_coord` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i64, Infallible>
[INFO] [stdout]    --> src/coord.rs:62:17
[INFO] [stdout]     |
[INFO] [stdout]  62 |                 value.try_into()
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 104 | impl_coord!(i64, i64);
[INFO] [stdout]     | --------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `impl_coord` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i64, Infallible>
[INFO] [stdout]    --> src/coord.rs:71:17
[INFO] [stdout]     |
[INFO] [stdout]  71 |                 self.try_into()
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 104 | impl_coord!(i64, i64);
[INFO] [stdout]     | --------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `impl_coord` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i128, Infallible>
[INFO] [stdout]    --> src/coord.rs:62:17
[INFO] [stdout]     |
[INFO] [stdout]  62 |                 value.try_into()
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 107 | impl_coord!(i128, i128);
[INFO] [stdout]     | ----------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `impl_coord` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i128, Infallible>
[INFO] [stdout]    --> src/coord.rs:71:17
[INFO] [stdout]     |
[INFO] [stdout]  71 |                 self.try_into()
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 107 | impl_coord!(i128, i128);
[INFO] [stdout]     | ----------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `impl_coord` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<isize, Infallible>
[INFO] [stdout]    --> src/coord.rs:62:17
[INFO] [stdout]     |
[INFO] [stdout]  62 |                 value.try_into()
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 110 | impl_coord!(isize, isize);
[INFO] [stdout]     | ------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `impl_coord` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<isize, Infallible>
[INFO] [stdout]    --> src/coord.rs:71:17
[INFO] [stdout]     |
[INFO] [stdout]  71 |                 self.try_into()
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 110 | impl_coord!(isize, isize);
[INFO] [stdout]     | ------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `impl_coord` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `griditer` (lib) due to 12 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<i8, Infallible>
[INFO] [stdout]   --> src/coord.rs:62:17
[INFO] [stdout]    |
[INFO] [stdout] 62 |                 value.try_into()
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 95 | impl_coord!(i8, i8);
[INFO] [stdout]    | ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]    = note: this error originates in the macro `impl_coord` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i8, Infallible>
[INFO] [stdout]   --> src/coord.rs:71:17
[INFO] [stdout]    |
[INFO] [stdout] 71 |                 self.try_into()
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 95 | impl_coord!(i8, i8);
[INFO] [stdout]    | ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `impl_coord` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i16, Infallible>
[INFO] [stdout]   --> src/coord.rs:62:17
[INFO] [stdout]    |
[INFO] [stdout] 62 |                 value.try_into()
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 98 | impl_coord!(i16, i16);
[INFO] [stdout]    | --------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `impl_coord` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i16, Infallible>
[INFO] [stdout]   --> src/coord.rs:71:17
[INFO] [stdout]    |
[INFO] [stdout] 71 |                 self.try_into()
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 98 | impl_coord!(i16, i16);
[INFO] [stdout]    | --------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `impl_coord` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]    --> src/coord.rs:62:17
[INFO] [stdout]     |
[INFO] [stdout]  62 |                 value.try_into()
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 101 | impl_coord!(i32, i32);
[INFO] [stdout]     | --------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `impl_coord` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]    --> src/coord.rs:71:17
[INFO] [stdout]     |
[INFO] [stdout]  71 |                 self.try_into()
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 101 | impl_coord!(i32, i32);
[INFO] [stdout]     | --------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `impl_coord` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i64, Infallible>
[INFO] [stdout]    --> src/coord.rs:62:17
[INFO] [stdout]     |
[INFO] [stdout]  62 |                 value.try_into()
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 104 | impl_coord!(i64, i64);
[INFO] [stdout]     | --------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `impl_coord` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i64, Infallible>
[INFO] [stdout]    --> src/coord.rs:71:17
[INFO] [stdout]     |
[INFO] [stdout]  71 |                 self.try_into()
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 104 | impl_coord!(i64, i64);
[INFO] [stdout]     | --------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `impl_coord` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i128, Infallible>
[INFO] [stdout]    --> src/coord.rs:62:17
[INFO] [stdout]     |
[INFO] [stdout]  62 |                 value.try_into()
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 107 | impl_coord!(i128, i128);
[INFO] [stdout]     | ----------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `impl_coord` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i128, Infallible>
[INFO] [stdout]    --> src/coord.rs:71:17
[INFO] [stdout]     |
[INFO] [stdout]  71 |                 self.try_into()
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 107 | impl_coord!(i128, i128);
[INFO] [stdout]     | ----------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `impl_coord` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<isize, Infallible>
[INFO] [stdout]    --> src/coord.rs:62:17
[INFO] [stdout]     |
[INFO] [stdout]  62 |                 value.try_into()
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 110 | impl_coord!(isize, isize);
[INFO] [stdout]     | ------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `impl_coord` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<isize, Infallible>
[INFO] [stdout]    --> src/coord.rs:71:17
[INFO] [stdout]     |
[INFO] [stdout]  71 |                 self.try_into()
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 110 | impl_coord!(isize, isize);
[INFO] [stdout]     | ------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `impl_coord` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `griditer` (lib test) due to 12 previous errors
[INFO] running `Command { std: "docker" "inspect" "d39eb843103678b43d1cfdf114b11ee8236fe73cae8651604b857e41f310ca14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d39eb843103678b43d1cfdf114b11ee8236fe73cae8651604b857e41f310ca14", kill_on_drop: false }`
[INFO] [stdout] d39eb843103678b43d1cfdf114b11ee8236fe73cae8651604b857e41f310ca14