[INFO] cloning repository https://github.com/Carlettos1/c2048
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Carlettos1/c2048" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCarlettos1%2Fc2048", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCarlettos1%2Fc2048'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a4d3265fa80f1d1f30c35e742d1bd49bd07703a2
[INFO] checking Carlettos1/c2048 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%2FCarlettos1%2Fc2048" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Carlettos1/c2048
[INFO] finished tweaking git repo https://github.com/Carlettos1/c2048
[INFO] tweaked toml for git repo https://github.com/Carlettos1/c2048 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Carlettos1/c2048 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/Carlettos1/c2048 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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 9b2431b8384d5318072c7c6607b90305ce993681b62863dd5ab8005b447b41cd
[INFO] running `Command { std: "docker" "start" "-a" "9b2431b8384d5318072c7c6607b90305ce993681b62863dd5ab8005b447b41cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9b2431b8384d5318072c7c6607b90305ce993681b62863dd5ab8005b447b41cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b2431b8384d5318072c7c6607b90305ce993681b62863dd5ab8005b447b41cd", kill_on_drop: false }`
[INFO] [stdout] 9b2431b8384d5318072c7c6607b90305ce993681b62863dd5ab8005b447b41cd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 83616d1243d92ae580c5e5973bcc58281c99fa6237c7c9d1d5a01ce4589b579f
[INFO] running `Command { std: "docker" "start" "-a" "83616d1243d92ae580c5e5973bcc58281c99fa6237c7c9d1d5a01ce4589b579f", kill_on_drop: false }`
[INFO] [stderr]    Compiling target-lexicon v0.12.16
[INFO] [stderr]     Checking unindent v0.2.3
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling pyo3-build-config v0.22.2
[INFO] [stderr]    Compiling pyo3-macros-backend v0.22.2
[INFO] [stderr]    Compiling pyo3-ffi v0.22.2
[INFO] [stderr]    Compiling pyo3 v0.22.2
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling pyo3-macros v0.22.2
[INFO] [stderr]     Checking c2048 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]   --> src/lib.rs:46:32
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn to_number(&self) -> usize {
[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/lib.rs:51:32
[INFO] [stdout]    |
[INFO] [stdout] 51 |     pub fn to_string(&self) -> String {
[INFO] [stdout]    |                                ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Move, Infallible>
[INFO] [stdout]    --> src/lib.rs:128:24
[INFO] [stdout]     |
[INFO] [stdout] 128 |     pub fn random() -> Self {
[INFO] [stdout]     |                        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]    --> src/lib.rs:177:32
[INFO] [stdout]     |
[INFO] [stdout] 177 |     pub fn has_space(&self) -> bool {
[INFO] [stdout]     |                                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/lib.rs:185:30
[INFO] [stdout]     |
[INFO] [stdout] 185 |     pub fn highest(&self) -> usize {
[INFO] [stdout]     |                              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/lib.rs:189:28
[INFO] [stdout]     |
[INFO] [stdout] 189 |     pub fn score(&self) -> usize {
[INFO] [stdout]     |                            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]    --> src/lib.rs:193:30
[INFO] [stdout]     |
[INFO] [stdout] 193 |     pub fn is_lose(&self) -> bool {
[INFO] [stdout]     |                              ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]    --> src/lib.rs:216:29
[INFO] [stdout]     |
[INFO] [stdout] 216 |     pub fn is_win(&self) -> bool {
[INFO] [stdout]     |                             ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<C2048, Infallible>
[INFO] [stdout]    --> src/lib.rs:239:43
[INFO] [stdout]     |
[INFO] [stdout] 239 |     pub fn clone_move(&self, mv: Move) -> Self {
[INFO] [stdout]     |                                           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<C2048, Infallible>
[INFO] [stdout]    --> src/lib.rs:245:41
[INFO] [stdout]     |
[INFO] [stdout] 245 |     pub fn lowest_energy_move(&self) -> Self {
[INFO] [stdout]     |                                         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<isize, Infallible>
[INFO] [stdout]    --> src/lib.rs:326:29
[INFO] [stdout]     |
[INFO] [stdout] 326 |     pub fn energy(&self) -> isize {
[INFO] [stdout]     |                             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<FullEnergy, Infallible>
[INFO] [stdout]    --> src/lib.rs:337:47
[INFO] [stdout]     |
[INFO] [stdout] 337 |     pub fn full_energy_at(&self, i: usize) -> FullEnergy {
[INFO] [stdout]     |                                               ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Energy, Infallible>
[INFO] [stdout]    --> src/lib.rs:466:29
[INFO] [stdout]     |
[INFO] [stdout] 466 |     pub fn reduce(&self) -> Energy {
[INFO] [stdout]     |                             ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<isize, Infallible>
[INFO] [stdout]    --> src/lib.rs:488:26
[INFO] [stdout]     |
[INFO] [stdout] 488 |     pub fn sum(&self) -> isize {
[INFO] [stdout]     |                          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `c2048` (lib test) due to 14 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<usize, Infallible>
[INFO] [stdout]   --> src/lib.rs:46:32
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn to_number(&self) -> usize {
[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/lib.rs:51:32
[INFO] [stdout]    |
[INFO] [stdout] 51 |     pub fn to_string(&self) -> String {
[INFO] [stdout]    |                                ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Move, Infallible>
[INFO] [stdout]    --> src/lib.rs:128:24
[INFO] [stdout]     |
[INFO] [stdout] 128 |     pub fn random() -> Self {
[INFO] [stdout]     |                        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]    --> src/lib.rs:177:32
[INFO] [stdout]     |
[INFO] [stdout] 177 |     pub fn has_space(&self) -> bool {
[INFO] [stdout]     |                                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/lib.rs:185:30
[INFO] [stdout]     |
[INFO] [stdout] 185 |     pub fn highest(&self) -> usize {
[INFO] [stdout]     |                              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/lib.rs:189:28
[INFO] [stdout]     |
[INFO] [stdout] 189 |     pub fn score(&self) -> usize {
[INFO] [stdout]     |                            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]    --> src/lib.rs:193:30
[INFO] [stdout]     |
[INFO] [stdout] 193 |     pub fn is_lose(&self) -> bool {
[INFO] [stdout]     |                              ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]    --> src/lib.rs:216:29
[INFO] [stdout]     |
[INFO] [stdout] 216 |     pub fn is_win(&self) -> bool {
[INFO] [stdout]     |                             ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<C2048, Infallible>
[INFO] [stdout]    --> src/lib.rs:239:43
[INFO] [stdout]     |
[INFO] [stdout] 239 |     pub fn clone_move(&self, mv: Move) -> Self {
[INFO] [stdout]     |                                           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<C2048, Infallible>
[INFO] [stdout]    --> src/lib.rs:245:41
[INFO] [stdout]     |
[INFO] [stdout] 245 |     pub fn lowest_energy_move(&self) -> Self {
[INFO] [stdout]     |                                         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<isize, Infallible>
[INFO] [stdout]    --> src/lib.rs:326:29
[INFO] [stdout]     |
[INFO] [stdout] 326 |     pub fn energy(&self) -> isize {
[INFO] [stdout]     |                             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<FullEnergy, Infallible>
[INFO] [stdout]    --> src/lib.rs:337:47
[INFO] [stdout]     |
[INFO] [stdout] 337 |     pub fn full_energy_at(&self, i: usize) -> FullEnergy {
[INFO] [stdout]     |                                               ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Energy, Infallible>
[INFO] [stdout]    --> src/lib.rs:466:29
[INFO] [stdout]     |
[INFO] [stdout] 466 |     pub fn reduce(&self) -> Energy {
[INFO] [stdout]     |                             ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<isize, Infallible>
[INFO] [stdout]    --> src/lib.rs:488:26
[INFO] [stdout]     |
[INFO] [stdout] 488 |     pub fn sum(&self) -> isize {
[INFO] [stdout]     |                          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `c2048` (lib) due to 14 previous errors
[INFO] running `Command { std: "docker" "inspect" "83616d1243d92ae580c5e5973bcc58281c99fa6237c7c9d1d5a01ce4589b579f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83616d1243d92ae580c5e5973bcc58281c99fa6237c7c9d1d5a01ce4589b579f", kill_on_drop: false }`
[INFO] [stdout] 83616d1243d92ae580c5e5973bcc58281c99fa6237c7c9d1d5a01ce4589b579f
