[INFO] cloning repository https://github.com/miyanokomiya/sts-deck-history
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/miyanokomiya/sts-deck-history" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmiyanokomiya%2Fsts-deck-history", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmiyanokomiya%2Fsts-deck-history'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fef0e020ea85310b64f847437aed047fcd8dc9b1
[INFO] checking miyanokomiya/sts-deck-history 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%2Fmiyanokomiya%2Fsts-deck-history" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/miyanokomiya/sts-deck-history
[INFO] finished tweaking git repo https://github.com/miyanokomiya/sts-deck-history
[INFO] tweaked toml for git repo https://github.com/miyanokomiya/sts-deck-history written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/miyanokomiya/sts-deck-history 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/miyanokomiya/sts-deck-history 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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 9d8e546e4f71e58620a705d619040bf542d29eb1584422784e369f9bf210331d
[INFO] running `Command { std: "docker" "start" "-a" "9d8e546e4f71e58620a705d619040bf542d29eb1584422784e369f9bf210331d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9d8e546e4f71e58620a705d619040bf542d29eb1584422784e369f9bf210331d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d8e546e4f71e58620a705d619040bf542d29eb1584422784e369f9bf210331d", kill_on_drop: false }`
[INFO] [stdout] 9d8e546e4f71e58620a705d619040bf542d29eb1584422784e369f9bf210331d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 61f5c8559b036b31b241b9bfcff87c1e8944c500d96fb2662bf9386f6a7a3450
[INFO] running `Command { std: "docker" "start" "-a" "61f5c8559b036b31b241b9bfcff87c1e8944c500d96fb2662bf9386f6a7a3450", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.34
[INFO] [stderr]    Compiling serde_derive v1.0.132
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling serde v1.0.132
[INFO] [stderr]    Compiling serde_json v1.0.73
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling clap_derive v3.0.0-rc.7
[INFO] [stderr]     Checking clap v3.0.0-rc.7
[INFO] [stderr]     Checking sts_deck_history v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `sts_deck_history` (bin "sts_deck_history") due to 1 previous error; 2 warnings emitted
[INFO] [stdout] warning: methods `downgrade` and `undo` are never used
[INFO] [stdout]   --> src/master_deck.rs:54:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl MasterDeck {
[INFO] [stdout]    | --------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 54 |     pub fn downgrade(&mut self, card: String) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 96 |     pub fn undo(&mut self, diff: &DeckDiff) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: function `downgrade_card` is never used
[INFO] [stdout]    --> src/master_deck.rs:125:4
[INFO] [stdout]     |
[INFO] [stdout] 125 | fn downgrade_card(card: String) -> String {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | /     #[clap(short, long)]
[INFO] [stdout] 17 | |     file: 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] warning: methods `downgrade` and `undo` are never used
[INFO] [stdout]   --> src/master_deck.rs:54:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl MasterDeck {
[INFO] [stdout]    | --------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 54 |     pub fn downgrade(&mut self, card: String) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 96 |     pub fn undo(&mut self, diff: &DeckDiff) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `downgrade_card` is never used
[INFO] [stdout]    --> src/master_deck.rs:125:4
[INFO] [stdout]     |
[INFO] [stdout] 125 | fn downgrade_card(card: String) -> String {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | /     #[clap(short, long)]
[INFO] [stdout] 17 | |     file: String,
[INFO] [stdout]    | |________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sts_deck_history` (bin "sts_deck_history" test) due to 1 previous error; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "61f5c8559b036b31b241b9bfcff87c1e8944c500d96fb2662bf9386f6a7a3450", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61f5c8559b036b31b241b9bfcff87c1e8944c500d96fb2662bf9386f6a7a3450", kill_on_drop: false }`
[INFO] [stdout] 61f5c8559b036b31b241b9bfcff87c1e8944c500d96fb2662bf9386f6a7a3450
