[INFO] cloning repository https://github.com/MattWhelan/words
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MattWhelan/words" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMattWhelan%2Fwords", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMattWhelan%2Fwords'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ca0788715a3af47e4b09157b0f60aa36af513f6a
[INFO] checking MattWhelan/words 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%2FMattWhelan%2Fwords" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/MattWhelan/words
[INFO] finished tweaking git repo https://github.com/MattWhelan/words
[INFO] tweaked toml for git repo https://github.com/MattWhelan/words written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/MattWhelan/words 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/MattWhelan/words 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] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[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] 62dc947282f59dea182d2577289a4c23e3dd080244db5c9103471df8ff84128f
[INFO] running `Command { std: "docker" "start" "-a" "62dc947282f59dea182d2577289a4c23e3dd080244db5c9103471df8ff84128f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "62dc947282f59dea182d2577289a4c23e3dd080244db5c9103471df8ff84128f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62dc947282f59dea182d2577289a4c23e3dd080244db5c9103471df8ff84128f", kill_on_drop: false }`
[INFO] [stdout] 62dc947282f59dea182d2577289a4c23e3dd080244db5c9103471df8ff84128f
[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] 86f60e5cd8bf2861ed1f64a3321aa434b01bc5c6a9374653a8310f63a0b9e621
[INFO] running `Command { std: "docker" "start" "-a" "86f60e5cd8bf2861ed1f64a3321aa434b01bc5c6a9374653a8310f63a0b9e621", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling libc v0.2.116
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling anyhow v1.0.52
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking wordlib v0.1.0 (/opt/rustwide/workdir/wordlib)
[INFO] [stderr]     Checking textwrap v0.14.2
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking static v0.1.0 (/opt/rustwide/workdir/static)
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking getrandom v0.2.4
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling clap_derive v3.0.12
[INFO] [stderr]     Checking clap v3.0.13
[INFO] [stderr]     Checking solver v0.2.0 (/opt/rustwide/workdir/solver)
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> solver/src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | /     /// The word list to draw guesses from
[INFO] [stdout] 12 | |     #[clap(short, default_value = "/usr/share/dict/words", env = "WORDLIST")]
[INFO] [stdout] 13 | |     wordlist: String,
[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]   --> solver/src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | /     /// The list of known disallowed words in the word list
[INFO] [stdout] 15 | |     #[clap(short, default_value = "disallowed")]
[INFO] [stdout] 16 | |     disallowed: String,
[INFO] [stdout]    | |______________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> solver/src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | /     /// A pattern describing the known positions of letters, and the length of the word.
[INFO] [stdout] 18 | |     /// Use '.' for unknown positions. E.g. "f...." for a five-letter word known to start with 'f'.
[INFO] [stdout] 19 | |     pattern: String,
[INFO] [stdout]    | |___________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> solver/src/main.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | /     /// Characters that are known to appear in the word, whether or not their positions are known.
[INFO] [stdout] 21 | |     /// Order doesn't matter.
[INFO] [stdout] 22 | |     #[clap(default_value = "")]
[INFO] [stdout] 23 | |     chars: String,
[INFO] [stdout]    | |_________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> solver/src/main.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | /     /// Previous guesses. Used to derive information about what letters are not present, and what
[INFO] [stdout] 25 | |     /// positions letters are not in.
[INFO] [stdout] 26 | |     tried: Vec<String>,
[INFO] [stdout]    | |______________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `solver` (bin "solver") due to 5 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<String, Infallible>
[INFO] [stdout]   --> solver/src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | /     /// The word list to draw guesses from
[INFO] [stdout] 12 | |     #[clap(short, default_value = "/usr/share/dict/words", env = "WORDLIST")]
[INFO] [stdout] 13 | |     wordlist: String,
[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]   --> solver/src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | /     /// The list of known disallowed words in the word list
[INFO] [stdout] 15 | |     #[clap(short, default_value = "disallowed")]
[INFO] [stdout] 16 | |     disallowed: String,
[INFO] [stdout]    | |______________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> solver/src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | /     /// A pattern describing the known positions of letters, and the length of the word.
[INFO] [stdout] 18 | |     /// Use '.' for unknown positions. E.g. "f...." for a five-letter word known to start with 'f'.
[INFO] [stdout] 19 | |     pattern: String,
[INFO] [stdout]    | |___________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> solver/src/main.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | /     /// Characters that are known to appear in the word, whether or not their positions are known.
[INFO] [stdout] 21 | |     /// Order doesn't matter.
[INFO] [stdout] 22 | |     #[clap(default_value = "")]
[INFO] [stdout] 23 | |     chars: String,
[INFO] [stdout]    | |_________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> solver/src/main.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | /     /// Previous guesses. Used to derive information about what letters are not present, and what
[INFO] [stdout] 25 | |     /// positions letters are not in.
[INFO] [stdout] 26 | |     tried: Vec<String>,
[INFO] [stdout]    | |______________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `solver` (bin "solver" test) due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "86f60e5cd8bf2861ed1f64a3321aa434b01bc5c6a9374653a8310f63a0b9e621", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86f60e5cd8bf2861ed1f64a3321aa434b01bc5c6a9374653a8310f63a0b9e621", kill_on_drop: false }`
[INFO] [stdout] 86f60e5cd8bf2861ed1f64a3321aa434b01bc5c6a9374653a8310f63a0b9e621
