[INFO] fetching crate y-sweet-core 0.9.1...
[INFO] checking y-sweet-core-0.9.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate y-sweet-core 0.9.1 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate y-sweet-core 0.9.1
[INFO] finished tweaking crates.io crate y-sweet-core 0.9.1
[INFO] tweaked toml for crates.io crate y-sweet-core 0.9.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate y-sweet-core 0.9.1 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 y-sweet-core 0.9.1 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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 8523a539386b5f3f65d8d7fa9714c3240fafcfdc1314fc490bf6f28f0c536165
[INFO] running `Command { std: "docker" "start" "-a" "8523a539386b5f3f65d8d7fa9714c3240fafcfdc1314fc490bf6f28f0c536165", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8523a539386b5f3f65d8d7fa9714c3240fafcfdc1314fc490bf6f28f0c536165", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8523a539386b5f3f65d8d7fa9714c3240fafcfdc1314fc490bf6f28f0c536165", kill_on_drop: false }`
[INFO] [stdout] 8523a539386b5f3f65d8d7fa9714c3240fafcfdc1314fc490bf6f28f0c536165
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] c3830f5d89b08fc6684a6effe3e7977da2d9c2994c0ff9e3815797e7c446e3b7
[INFO] running `Command { std: "docker" "start" "-a" "c3830f5d89b08fc6684a6effe3e7977da2d9c2994c0ff9e3815797e7c446e3b7", kill_on_drop: false }`
[INFO] [stderr]     Checking bytes v1.7.1
[INFO] [stderr]    Compiling serde v1.0.210
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]     Checking rustls-pki-types v1.8.0
[INFO] [stderr]    Compiling cc v1.1.18
[INFO] [stderr]     Checking futures-task v0.3.30
[INFO] [stderr]    Compiling rustls v0.23.13
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking socket2 v0.5.7
[INFO] [stderr]    Compiling serde_json v1.0.128
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking fastrand v2.1.1
[INFO] [stderr]    Compiling anyhow v1.0.87
[INFO] [stderr]     Checking cpufeatures v0.2.14
[INFO] [stderr]     Checking time v0.3.36
[INFO] [stderr]     Checking sync_wrapper v1.0.1
[INFO] [stderr]     Checking ipnet v2.10.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking smallstr v0.3.0
[INFO] [stderr]     Checking parking_lot_core v0.9.10
[INFO] [stderr]     Checking http v1.1.0
[INFO] [stderr]     Checking webpki-roots v0.26.5
[INFO] [stderr]     Checking rustls-pemfile v2.1.3
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking dashmap v6.1.0
[INFO] [stderr]     Checking md-5 v0.10.6
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]     Checking hmac v0.12.1
[INFO] [stderr]     Checking http-body v1.0.1
[INFO] [stderr]    Compiling ring v0.17.8
[INFO] [stderr]     Checking http-body-util v0.1.2
[INFO] [stderr]    Compiling serde_derive v1.0.210
[INFO] [stderr]    Compiling tokio-macros v2.4.0
[INFO] [stderr]    Compiling pin-project-internal v1.1.5
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling thiserror-impl v1.0.63
[INFO] [stderr]    Compiling async-trait v0.1.82
[INFO] [stderr]     Checking tokio v1.40.0
[INFO] [stderr]     Checking rustls-webpki v0.102.8
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking pin-project v1.1.5
[INFO] [stderr]     Checking thiserror v1.0.63
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking tower v0.4.13
[INFO] [stderr]     Checking hyper v1.4.1
[INFO] [stderr]     Checking tokio-rustls v0.26.0
[INFO] [stderr]     Checking hyper-util v0.1.8
[INFO] [stderr]     Checking quick-xml v0.30.0
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking hyper-rustls v0.27.3
[INFO] [stderr]     Checking reqwest v0.12.7
[INFO] [stderr]     Checking yrs v0.19.2
[INFO] [stderr]     Checking rusty-s3 v0.5.0
[INFO] [stderr]     Checking yrs-kvstore v0.3.0
[INFO] [stderr]     Checking y-sweet-core v0.9.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::option::Option<Vec<u8>>, Infallible>
[INFO] [stdout]    --> src/sync_kv.rs:150:70
[INFO] [stdout]     |
[INFO] [stdout] 150 |       fn get(&self, key: &[u8]) -> Result<Option<Vec<u8>>, Infallible> {
[INFO] [stdout]     |  ______________________________________________________________________^
[INFO] [stdout] 151 | |         let map = self.data.lock().unwrap();
[INFO] [stdout] 152 | |         Ok(map.get(key).cloned())
[INFO] [stdout] 153 | |     }
[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: std::result::Result<std::option::Option<Vec<u8>>, Infallible>
[INFO] [stdout]    --> src/sync_kv.rs:152:9
[INFO] [stdout]     |
[INFO] [stdout] 152 |         Ok(map.get(key).cloned())
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<SyncKvCursor, Infallible>
[INFO] [stdout]    --> src/sync_kv.rs:162:87
[INFO] [stdout]     |
[INFO] [stdout] 162 |       fn iter_range(&self, from: &[u8], to: &[u8]) -> Result<Self::Cursor, Self::Error> {
[INFO] [stdout]     |  _______________________________________________________________________________________^
[INFO] [stdout] 163 | |         Ok(SyncKvCursor {
[INFO] [stdout] 164 | |             data: self.data.clone(),
[INFO] [stdout] 165 | |             next_key: Bound::Included(from.to_vec()),
[INFO] [stdout] 166 | |             to: to.to_vec(),
[INFO] [stdout] 167 | |         })
[INFO] [stdout] 168 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<SyncKvCursor, Infallible>
[INFO] [stdout]    --> src/sync_kv.rs:163:9
[INFO] [stdout]     |
[INFO] [stdout] 163 | /         Ok(SyncKvCursor {
[INFO] [stdout] 164 | |             data: self.data.clone(),
[INFO] [stdout] 165 | |             next_key: Bound::Included(from.to_vec()),
[INFO] [stdout] 166 | |             to: to.to_vec(),
[INFO] [stdout] 167 | |         })
[INFO] [stdout]     | |__________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::option::Option<SyncKvEntry>, Infallible>
[INFO] [stdout]    --> src/sync_kv.rs:170:81
[INFO] [stdout]     |
[INFO] [stdout] 170 |       fn peek_back(&self, key: &[u8]) -> Result<Option<Self::Entry>, Self::Error> {
[INFO] [stdout]     |  _________________________________________________________________________________^
[INFO] [stdout] 171 | |         let map = self.data.lock().unwrap();
[INFO] [stdout] 172 | |         let prev = map.range(..key.to_vec()).next_back();
[INFO] [stdout] 173 | |         Ok(prev.map(|(k, v)| SyncKvEntry {
[INFO] [stdout] ...   |
[INFO] [stdout] 176 | |         }))
[INFO] [stdout] 177 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::option::Option<SyncKvEntry>, Infallible>
[INFO] [stdout]    --> src/sync_kv.rs:173:9
[INFO] [stdout]     |
[INFO] [stdout] 173 | /         Ok(prev.map(|(k, v)| SyncKvEntry {
[INFO] [stdout] 174 | |             key: k.clone(),
[INFO] [stdout] 175 | |             value: v.clone(),
[INFO] [stdout] 176 | |         }))
[INFO] [stdout]     | |___________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<std::result::Result<Infallible, Infallible>, SyncKvCursor>
[INFO] [stdout]    --> src/sync_kv.rs:187:22
[INFO] [stdout]     |
[INFO] [stdout] 187 |         for entry in self.iter_range(from, to)? {
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<SyncKvCursor, Infallible>
[INFO] [stdout]    --> src/sync_kv.rs:187:22
[INFO] [stdout]     |
[INFO] [stdout] 187 |         for entry in self.iter_range(from, to)? {
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `y-sweet-core` (lib) due to 8 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::option::Option<Vec<u8>>, Infallible>
[INFO] [stdout]    --> src/sync_kv.rs:150:70
[INFO] [stdout]     |
[INFO] [stdout] 150 |       fn get(&self, key: &[u8]) -> Result<Option<Vec<u8>>, Infallible> {
[INFO] [stdout]     |  ______________________________________________________________________^
[INFO] [stdout] 151 | |         let map = self.data.lock().unwrap();
[INFO] [stdout] 152 | |         Ok(map.get(key).cloned())
[INFO] [stdout] 153 | |     }
[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: std::result::Result<std::option::Option<Vec<u8>>, Infallible>
[INFO] [stdout]    --> src/sync_kv.rs:152:9
[INFO] [stdout]     |
[INFO] [stdout] 152 |         Ok(map.get(key).cloned())
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<SyncKvCursor, Infallible>
[INFO] [stdout]    --> src/sync_kv.rs:162:87
[INFO] [stdout]     |
[INFO] [stdout] 162 |       fn iter_range(&self, from: &[u8], to: &[u8]) -> Result<Self::Cursor, Self::Error> {
[INFO] [stdout]     |  _______________________________________________________________________________________^
[INFO] [stdout] 163 | |         Ok(SyncKvCursor {
[INFO] [stdout] 164 | |             data: self.data.clone(),
[INFO] [stdout] 165 | |             next_key: Bound::Included(from.to_vec()),
[INFO] [stdout] 166 | |             to: to.to_vec(),
[INFO] [stdout] 167 | |         })
[INFO] [stdout] 168 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<SyncKvCursor, Infallible>
[INFO] [stdout]    --> src/sync_kv.rs:163:9
[INFO] [stdout]     |
[INFO] [stdout] 163 | /         Ok(SyncKvCursor {
[INFO] [stdout] 164 | |             data: self.data.clone(),
[INFO] [stdout] 165 | |             next_key: Bound::Included(from.to_vec()),
[INFO] [stdout] 166 | |             to: to.to_vec(),
[INFO] [stdout] 167 | |         })
[INFO] [stdout]     | |__________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::option::Option<SyncKvEntry>, Infallible>
[INFO] [stdout]    --> src/sync_kv.rs:170:81
[INFO] [stdout]     |
[INFO] [stdout] 170 |       fn peek_back(&self, key: &[u8]) -> Result<Option<Self::Entry>, Self::Error> {
[INFO] [stdout]     |  _________________________________________________________________________________^
[INFO] [stdout] 171 | |         let map = self.data.lock().unwrap();
[INFO] [stdout] 172 | |         let prev = map.range(..key.to_vec()).next_back();
[INFO] [stdout] 173 | |         Ok(prev.map(|(k, v)| SyncKvEntry {
[INFO] [stdout] ...   |
[INFO] [stdout] 176 | |         }))
[INFO] [stdout] 177 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::option::Option<SyncKvEntry>, Infallible>
[INFO] [stdout]    --> src/sync_kv.rs:173:9
[INFO] [stdout]     |
[INFO] [stdout] 173 | /         Ok(prev.map(|(k, v)| SyncKvEntry {
[INFO] [stdout] 174 | |             key: k.clone(),
[INFO] [stdout] 175 | |             value: v.clone(),
[INFO] [stdout] 176 | |         }))
[INFO] [stdout]     | |___________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<std::result::Result<Infallible, Infallible>, SyncKvCursor>
[INFO] [stdout]    --> src/sync_kv.rs:187:22
[INFO] [stdout]     |
[INFO] [stdout] 187 |         for entry in self.iter_range(from, to)? {
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<SyncKvCursor, Infallible>
[INFO] [stdout]    --> src/sync_kv.rs:187:22
[INFO] [stdout]     |
[INFO] [stdout] 187 |         for entry in self.iter_range(from, to)? {
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `y-sweet-core` (lib test) due to 8 previous errors
[INFO] running `Command { std: "docker" "inspect" "c3830f5d89b08fc6684a6effe3e7977da2d9c2994c0ff9e3815797e7c446e3b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3830f5d89b08fc6684a6effe3e7977da2d9c2994c0ff9e3815797e7c446e3b7", kill_on_drop: false }`
[INFO] [stdout] c3830f5d89b08fc6684a6effe3e7977da2d9c2994c0ff9e3815797e7c446e3b7
