[INFO] fetching crate cursormatrix 0.4.0...
[INFO] checking cursormatrix-0.4.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate cursormatrix 0.4.0 into /workspace/builds/worker-3-tc2/source
[INFO] removed /workspace/builds/worker-3-tc2/source/rust-toolchain
[INFO] started tweaking crates.io crate cursormatrix 0.4.0
[INFO] finished tweaking crates.io crate cursormatrix 0.4.0
[INFO] tweaked toml for crates.io crate cursormatrix 0.4.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate cursormatrix 0.4.0 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] crate crates.io crate cursormatrix 0.4.0 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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 822711c8b5b398e01f8cc2ce585d077c90efa0ec31e611e5e41409beda6e81f9
[INFO] running `Command { std: "docker" "start" "-a" "822711c8b5b398e01f8cc2ce585d077c90efa0ec31e611e5e41409beda6e81f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "822711c8b5b398e01f8cc2ce585d077c90efa0ec31e611e5e41409beda6e81f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "822711c8b5b398e01f8cc2ce585d077c90efa0ec31e611e5e41409beda6e81f9", kill_on_drop: false }`
[INFO] [stdout] 822711c8b5b398e01f8cc2ce585d077c90efa0ec31e611e5e41409beda6e81f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 15203da7214c2713776d86df75dfe848b30fdc96eb4625b76ebdd2d04624f261
[INFO] running `Command { std: "docker" "start" "-a" "15203da7214c2713776d86df75dfe848b30fdc96eb4625b76ebdd2d04624f261", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]     Checking unicode-normalization v0.1.22
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking termios v0.3.3
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking term v0.7.0
[INFO] [stderr]     Checking cursormatrix v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::core::rune::*`
[INFO] [stdout]   --> src/core/mod.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub use crate::core::rune::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::core::rune::*`
[INFO] [stdout]   --> src/core/mod.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub use crate::core::rune::*;
[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<String, Infallible>
[INFO] [stdout]   --> src/core/rune.rs:15:24
[INFO] [stdout]    |
[INFO] [stdout] 15 |             Rune::UStr(String::from_str(s).unwrap(), UWStr::width_cjk(s))
[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<String, Infallible>
[INFO] [stdout]   --> src/core/rune.rs:17:24
[INFO] [stdout]    |
[INFO] [stdout] 17 |             Rune::UStr(String::from_str(s).unwrap(), UWStr::width(s))
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/events.rs:177:70
[INFO] [stdout]     |
[INFO] [stdout] 177 | ...                   (String::from_str(k).unwrap(), v.clone())
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cursormatrix` (lib test) due to 3 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/core/rune.rs:15:24
[INFO] [stdout]    |
[INFO] [stdout] 15 |             Rune::UStr(String::from_str(s).unwrap(), UWStr::width_cjk(s))
[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<String, Infallible>
[INFO] [stdout]   --> src/core/rune.rs:17:24
[INFO] [stdout]    |
[INFO] [stdout] 17 |             Rune::UStr(String::from_str(s).unwrap(), UWStr::width(s))
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/events.rs:177:70
[INFO] [stdout]     |
[INFO] [stdout] 177 | ...                   (String::from_str(k).unwrap(), v.clone())
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cursormatrix` (lib) due to 3 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "15203da7214c2713776d86df75dfe848b30fdc96eb4625b76ebdd2d04624f261", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15203da7214c2713776d86df75dfe848b30fdc96eb4625b76ebdd2d04624f261", kill_on_drop: false }`
[INFO] [stdout] 15203da7214c2713776d86df75dfe848b30fdc96eb4625b76ebdd2d04624f261