[INFO] cloning repository https://github.com/grkuntzmd/rust-sudoku
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/grkuntzmd/rust-sudoku" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgrkuntzmd%2Frust-sudoku", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgrkuntzmd%2Frust-sudoku'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d7816f6f254b7f1be45dee2026a79e57a7ee373b
[INFO] checking grkuntzmd/rust-sudoku 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%2Fgrkuntzmd%2Frust-sudoku" "/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/grkuntzmd/rust-sudoku
[INFO] finished tweaking git repo https://github.com/grkuntzmd/rust-sudoku
[INFO] tweaked toml for git repo https://github.com/grkuntzmd/rust-sudoku written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/grkuntzmd/rust-sudoku 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/grkuntzmd/rust-sudoku 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] 8878f1c6dbafd557649a63e459b4ef27c732f6a56b3e334b7bb0dbb3da3a575b
[INFO] running `Command { std: "docker" "start" "-a" "8878f1c6dbafd557649a63e459b4ef27c732f6a56b3e334b7bb0dbb3da3a575b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8878f1c6dbafd557649a63e459b4ef27c732f6a56b3e334b7bb0dbb3da3a575b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8878f1c6dbafd557649a63e459b4ef27c732f6a56b3e334b7bb0dbb3da3a575b", kill_on_drop: false }`
[INFO] [stdout] 8878f1c6dbafd557649a63e459b4ef27c732f6a56b3e334b7bb0dbb3da3a575b
[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] 6affde4abfdebe6ff220a257f58874ff6961b746ded260f0bffbbd60b9802c05
[INFO] running `Command { std: "docker" "start" "-a" "6affde4abfdebe6ff220a257f58874ff6961b746ded260f0bffbbd60b9802c05", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.4
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking num_cpus v1.12.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking crossbeam-queue v0.2.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling chrono v0.4.11
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]     Checking atoi v0.3.2
[INFO] [stderr]    Compiling sudoku v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking regex v1.3.6
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/main.rs:115:18
[INFO] [stdout]     |
[INFO] [stdout] 115 |     let inputs = values_t!(matches, "inputs", String).unwrap_or_else(|_e| Vec::new());
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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 `values_t` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/solver/mod.rs:548:42
[INFO] [stdout]     |
[INFO] [stdout] 548 |     fn index<'a>(&'a self, p: &Point) -> &Cell {
[INFO] [stdout]     |                   --                     ^^^^^ the same lifetime is elided here
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 548 |     fn index<'a>(&'a self, p: &Point) -> &'a Cell {
[INFO] [stdout]     |                                           ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/solver/mod.rs:554:50
[INFO] [stdout]     |
[INFO] [stdout] 554 |     fn index_mut<'a>(&'a mut self, p: &Point) -> &mut Cell {
[INFO] [stdout]     |                       --                         ^^^^^^^^^ the same lifetime is elided here
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 554 |     fn index_mut<'a>(&'a mut self, p: &Point) -> &'a mut Cell {
[INFO] [stdout]     |                                                   ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sudoku` (bin "sudoku") due to 1 previous error; 2 warnings 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/main.rs:115:18
[INFO] [stdout]     |
[INFO] [stdout] 115 |     let inputs = values_t!(matches, "inputs", String).unwrap_or_else(|_e| Vec::new());
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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 `values_t` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/solver/mod.rs:548:42
[INFO] [stdout]     |
[INFO] [stdout] 548 |     fn index<'a>(&'a self, p: &Point) -> &Cell {
[INFO] [stdout]     |                   --                     ^^^^^ the same lifetime is elided here
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 548 |     fn index<'a>(&'a self, p: &Point) -> &'a Cell {
[INFO] [stdout]     |                                           ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/solver/mod.rs:554:50
[INFO] [stdout]     |
[INFO] [stdout] 554 |     fn index_mut<'a>(&'a mut self, p: &Point) -> &mut Cell {
[INFO] [stdout]     |                       --                         ^^^^^^^^^ the same lifetime is elided here
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 554 |     fn index_mut<'a>(&'a mut self, p: &Point) -> &'a mut Cell {
[INFO] [stdout]     |                                                   ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sudoku` (bin "sudoku" test) due to 1 previous error; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "6affde4abfdebe6ff220a257f58874ff6961b746ded260f0bffbbd60b9802c05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6affde4abfdebe6ff220a257f58874ff6961b746ded260f0bffbbd60b9802c05", kill_on_drop: false }`
[INFO] [stdout] 6affde4abfdebe6ff220a257f58874ff6961b746ded260f0bffbbd60b9802c05