[INFO] fetching crate casec 0.1.3...
[INFO] checking casec-0.1.3 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate casec 0.1.3 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate casec 0.1.3
[INFO] finished tweaking crates.io crate casec 0.1.3
[INFO] tweaked toml for crates.io crate casec 0.1.3 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate casec 0.1.3 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 casec 0.1.3 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] 4ae7010482fa5eab4ac4cd386a52fd7ee60d74cd9b8049445881e6e5a5cec13c
[INFO] running `Command { std: "docker" "start" "-a" "4ae7010482fa5eab4ac4cd386a52fd7ee60d74cd9b8049445881e6e5a5cec13c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ae7010482fa5eab4ac4cd386a52fd7ee60d74cd9b8049445881e6e5a5cec13c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ae7010482fa5eab4ac4cd386a52fd7ee60d74cd9b8049445881e6e5a5cec13c", kill_on_drop: false }`
[INFO] [stdout] 4ae7010482fa5eab4ac4cd386a52fd7ee60d74cd9b8049445881e6e5a5cec13c
[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] 0f4013e47d181c1338da08df60b2da21c2bb853b87baca5b2391eae4a7db7429
[INFO] running `Command { std: "docker" "start" "-a" "0f4013e47d181c1338da08df60b2da21c2bb853b87baca5b2391eae4a7db7429", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking once_cell v1.7.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]     Checking regex-syntax v0.6.22
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking regex v1.4.3
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]     Checking structopt v0.3.21
[INFO] [stderr]     Checking casec v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Replacer` is never constructed
[INFO] [stdout]   --> src/converter.rs:72:8
[INFO] [stdout]    |
[INFO] [stdout] 72 | struct Replacer {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `append_cammel` and `append_snake` are never used
[INFO] [stdout]   --> src/converter.rs:77:8
[INFO] [stdout]    |
[INFO] [stdout] 76 | impl Replacer {
[INFO] [stdout]    | ------------- methods in this implementation
[INFO] [stdout] 77 |     fn append_cammel(&self, chars: Chars, dst: &mut String) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 94 |     fn append_snake(&self, chars: Chars, dst: &mut String) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | /     /// The list of patterns to look for
[INFO] [stdout] 35 | |     #[structopt(long, short)]
[INFO] [stdout] 36 | |     patterns: Vec<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: struct `Replacer` is never constructed
[INFO] [stdout]   --> src/converter.rs:72:8
[INFO] [stdout]    |
[INFO] [stdout] 72 | struct Replacer {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `append_cammel` and `append_snake` are never used
[INFO] [stdout]   --> src/converter.rs:77:8
[INFO] [stdout]    |
[INFO] [stdout] 76 | impl Replacer {
[INFO] [stdout]    | ------------- methods in this implementation
[INFO] [stdout] 77 |     fn append_cammel(&self, chars: Chars, dst: &mut String) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 94 |     fn append_snake(&self, chars: Chars, dst: &mut String) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | /     /// The list of patterns to look for
[INFO] [stdout] 35 | |     #[structopt(long, short)]
[INFO] [stdout] 36 | |     patterns: Vec<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 `casec` (bin "casec") due to 1 previous error; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `casec` (bin "casec" test) due to 1 previous error; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "0f4013e47d181c1338da08df60b2da21c2bb853b87baca5b2391eae4a7db7429", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f4013e47d181c1338da08df60b2da21c2bb853b87baca5b2391eae4a7db7429", kill_on_drop: false }`
[INFO] [stdout] 0f4013e47d181c1338da08df60b2da21c2bb853b87baca5b2391eae4a7db7429
