[INFO] fetching crate generational-cache 0.2.2... [INFO] checking generational-cache-0.2.2 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577 [INFO] extracting crate generational-cache 0.2.2 into /workspace/builds/worker-6-tc2/source [INFO] started tweaking crates.io crate generational-cache 0.2.2 [INFO] finished tweaking crates.io crate generational-cache 0.2.2 [INFO] tweaked toml for crates.io crate generational-cache 0.2.2 written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate generational-cache 0.2.2 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 36530afba3d16ce847fdd30b60116f631c40446f8ff2cd7deee9c93fead48aad [INFO] running `Command { std: "docker" "start" "-a" "36530afba3d16ce847fdd30b60116f631c40446f8ff2cd7deee9c93fead48aad", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "36530afba3d16ce847fdd30b60116f631c40446f8ff2cd7deee9c93fead48aad", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "36530afba3d16ce847fdd30b60116f631c40446f8ff2cd7deee9c93fead48aad", kill_on_drop: false }` [INFO] [stdout] 36530afba3d16ce847fdd30b60116f631c40446f8ff2cd7deee9c93fead48aad [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] a1a1cde405870faa01a1a7b13144aa2e9b4bfa0cd42d2e37a5a020615b1966e3 [INFO] running `Command { std: "docker" "start" "-a" "a1a1cde405870faa01a1a7b13144aa2e9b4bfa0cd42d2e37a5a020615b1966e3", kill_on_drop: false }` [INFO] [stderr] Checking generational-cache v0.2.2 (/opt/rustwide/workdir) [INFO] [stdout] error: this type will no longer be must used: Result, Infallible> [INFO] [stdout] --> src/map/impls/alloc_btree_map.rs:36:78 [INFO] [stdout] | [INFO] [stdout] 36 | fn insert(&mut self, key: K, value: V) -> Result, Self::Error> { [INFO] [stdout] | ______________________________________________________________________________^ [INFO] [stdout] 37 | | Ok(self.btree_map.insert(key, value)) [INFO] [stdout] 38 | | } [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, Infallible> [INFO] [stdout] --> src/map/impls/alloc_btree_map.rs:37:9 [INFO] [stdout] | [INFO] [stdout] 37 | Ok(self.btree_map.insert(key, value)) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result, Infallible> [INFO] [stdout] --> src/map/impls/alloc_btree_map.rs:36:78 [INFO] [stdout] | [INFO] [stdout] 36 | fn insert(&mut self, key: K, value: V) -> Result, Self::Error> { [INFO] [stdout] | ______________________________________________________________________________^ [INFO] [stdout] 37 | | Ok(self.btree_map.insert(key, value)) [INFO] [stdout] 38 | | } [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, Infallible> [INFO] [stdout] --> src/map/impls/alloc_btree_map.rs:37:9 [INFO] [stdout] | [INFO] [stdout] 37 | Ok(self.btree_map.insert(key, value)) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `generational-cache` (lib) due to 2 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: could not compile `generational-cache` (lib test) due to 2 previous errors [INFO] running `Command { std: "docker" "inspect" "a1a1cde405870faa01a1a7b13144aa2e9b4bfa0cd42d2e37a5a020615b1966e3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a1a1cde405870faa01a1a7b13144aa2e9b4bfa0cd42d2e37a5a020615b1966e3", kill_on_drop: false }` [INFO] [stdout] a1a1cde405870faa01a1a7b13144aa2e9b4bfa0cd42d2e37a5a020615b1966e3