[INFO] cloning repository https://github.com/realaravinth/mCaptcha
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/realaravinth/mCaptcha" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frealaravinth%2FmCaptcha", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frealaravinth%2FmCaptcha'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 86bfa464b153bdab0c58433e2296b2887cf90c37
[INFO] checking realaravinth/mCaptcha against a5689b034ad287112f709693384a37f1377eb9cc for pr-129249-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frealaravinth%2FmCaptcha" "/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/realaravinth/mCaptcha
[INFO] finished tweaking git repo https://github.com/realaravinth/mCaptcha
[INFO] tweaked toml for git repo https://github.com/realaravinth/mCaptcha written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/realaravinth/mCaptcha on toolchain a5689b034ad287112f709693384a37f1377eb9cc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/realaravinth/mCaptcha 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" "+a5689b034ad287112f709693384a37f1377eb9cc" "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/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 514b9709141fddef89e30d93046ebbf2f63a2d34871535e13fc90845fd6341fa
[INFO] running `Command { std: "docker" "start" "514b9709141fddef89e30d93046ebbf2f63a2d34871535e13fc90845fd6341fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "514b9709141fddef89e30d93046ebbf2f63a2d34871535e13fc90845fd6341fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "514b9709141fddef89e30d93046ebbf2f63a2d34871535e13fc90845fd6341fa" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "514b9709141fddef89e30d93046ebbf2f63a2d34871535e13fc90845fd6341fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "514b9709141fddef89e30d93046ebbf2f63a2d34871535e13fc90845fd6341fa" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
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[INFO] [stderr]     Checking icu_provider v2.2.0
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[INFO] [stderr]     Checking icu_normalizer v2.2.0
[INFO] [stderr]     Checking idna_adapter v1.2.2
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[INFO] [stderr]     Checking num v0.4.1
[INFO] [stderr]     Checking redis v1.2.1
[INFO] [stderr]     Checking mcaptcha_pow_sha256 v0.5.0
[INFO] [stderr]     Checking libmcaptcha v0.2.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::mcaptcha`
[INFO] [stdout]    --> src/master/embedded/counter.rs:226:9
[INFO] [stdout]     |
[INFO] [stdout] 226 |     use crate::mcaptcha;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `log::debug`
[INFO] [stdout]   --> src/queue.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | use log::debug;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `log::debug`
[INFO] [stdout]   --> src/queue.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | use log::debug;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `log::error`
[INFO] [stdout]   --> src/queue.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 | use log::error;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `m`
[INFO] [stdout]    --> src/master/redis/master.rs:118:26
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn handle(&mut self, m: GetInternalData, ctx: &mut Self::Context) -> Self::Result {
[INFO] [stdout]     |                          ^ help: if this is intentional, prefix it with an underscore: `_m`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctx`
[INFO] [stdout]    --> src/master/redis/master.rs:118:46
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn handle(&mut self, m: GetInternalData, ctx: &mut Self::Context) -> Self::Result {
[INFO] [stdout]     |                                              ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `m`
[INFO] [stdout]    --> src/master/redis/master.rs:126:26
[INFO] [stdout]     |
[INFO] [stdout] 126 |     fn handle(&mut self, m: SetInternalData, ctx: &mut Self::Context) -> Self::Result {
[INFO] [stdout]     |                          ^ help: if this is intentional, prefix it with an underscore: `_m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctx`
[INFO] [stdout]    --> src/master/redis/master.rs:126:46
[INFO] [stdout]     |
[INFO] [stdout] 126 |     fn handle(&mut self, m: SetInternalData, ctx: &mut Self::Context) -> Self::Result {
[INFO] [stdout]     |                                              ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `m`
[INFO] [stdout]    --> src/master/redis/master.rs:118:26
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn handle(&mut self, m: GetInternalData, ctx: &mut Self::Context) -> Self::Result {
[INFO] [stdout]     |                          ^ help: if this is intentional, prefix it with an underscore: `_m`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctx`
[INFO] [stdout]    --> src/master/redis/master.rs:118:46
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn handle(&mut self, m: GetInternalData, ctx: &mut Self::Context) -> Self::Result {
[INFO] [stdout]     |                                              ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `m`
[INFO] [stdout]    --> src/master/redis/master.rs:126:26
[INFO] [stdout]     |
[INFO] [stdout] 126 |     fn handle(&mut self, m: SetInternalData, ctx: &mut Self::Context) -> Self::Result {
[INFO] [stdout]     |                          ^ help: if this is intentional, prefix it with an underscore: `_m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctx`
[INFO] [stdout]    --> src/master/redis/master.rs:126:46
[INFO] [stdout]     |
[INFO] [stdout] 126 |     fn handle(&mut self, m: SetInternalData, ctx: &mut Self::Context) -> Self::Result {
[INFO] [stdout]     |                                              ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/master/embedded/master.rs:254:13
[INFO] [stdout]     |
[INFO] [stdout] 254 |             tx.send(Ok(data));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _unused = ...` to ignore the resulting value without dropping it immediately
[INFO] [stdout]     |
[INFO] [stdout] 254 |             let _unused = tx.send(Ok(data));
[INFO] [stdout]     |             +++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `std::string::String`
[INFO] [stdout]    --> src/cache/redis.rs:180:56
[INFO] [stdout]     |
[INFO] [stdout] 180 |         let addr = RedisCache::new(RedisConfig::Single(redis_url().into()))
[INFO] [stdout]     |                                                        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]     = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 180 -         let addr = RedisCache::new(RedisConfig::Single(redis_url().into()))
[INFO] [stdout] 180 +         let addr = RedisCache::new(RedisConfig::Single(redis_url()))
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 180 -         let addr = RedisCache::new(RedisConfig::Single(redis_url().into()))
[INFO] [stdout] 180 +         let addr = RedisCache::new(RedisConfig::Single(<std::string::String as Into<_>>::into(redis_url())))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `std::string::String`
[INFO] [stdout]    --> src/cache/redis.rs:233:56
[INFO] [stdout]     |
[INFO] [stdout] 233 |         let addr = RedisCache::new(RedisConfig::Single(redis_url().into()))
[INFO] [stdout]     |                                                        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 233 -         let addr = RedisCache::new(RedisConfig::Single(redis_url().into()))
[INFO] [stdout] 233 +         let addr = RedisCache::new(RedisConfig::Single(redis_url()))
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 233 -         let addr = RedisCache::new(RedisConfig::Single(redis_url().into()))
[INFO] [stdout] 233 +         let addr = RedisCache::new(RedisConfig::Single(<std::string::String as Into<_>>::into(redis_url())))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/master/embedded/master.rs:254:13
[INFO] [stdout]     |
[INFO] [stdout] 254 |             tx.send(Ok(data));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _unused = ...` to ignore the resulting value without dropping it immediately
[INFO] [stdout]     |
[INFO] [stdout] 254 |             let _unused = tx.send(Ok(data));
[INFO] [stdout]     |             +++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `libmcaptcha` (lib test) due to 2 previous errors; 7 warnings emitted
[INFO] [stderr] warning: unused dependency `num_cpus`
[INFO] [stderr]   --> Cargo.toml:26:15
[INFO] [stderr]    |
[INFO] [stderr] 26 | [dependencies.num_cpus]
[INFO] [stderr]    |               ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::unused_dependencies` is set to `warn` by default
[INFO] [stderr] help: consider removing the dependency on `num_cpus`
[INFO] [stderr] warning: unused dependency `pretty_env_logger`
[INFO] [stderr]   --> Cargo.toml:30:15
[INFO] [stderr]    |
[INFO] [stderr] 30 | [dependencies.pretty_env_logger]
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] help: consider removing the dependency on `pretty_env_logger`
[INFO] [stderr] warning: `libmcaptcha` (manifest) generated 2 warnings
[INFO] running `Command { std: "docker" "inspect" "514b9709141fddef89e30d93046ebbf2f63a2d34871535e13fc90845fd6341fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "514b9709141fddef89e30d93046ebbf2f63a2d34871535e13fc90845fd6341fa", kill_on_drop: false }`
[INFO] [stdout] 514b9709141fddef89e30d93046ebbf2f63a2d34871535e13fc90845fd6341fa
