[INFO] fetching crate unflappable 0.2.0... [INFO] checking unflappable-0.2.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577 [INFO] extracting crate unflappable 0.2.0 into /workspace/builds/worker-3-tc2/source [INFO] removed /workspace/builds/worker-3-tc2/source/rust-toolchain [INFO] started tweaking crates.io crate unflappable 0.2.0 [INFO] finished tweaking crates.io crate unflappable 0.2.0 [INFO] tweaked toml for crates.io crate unflappable 0.2.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate unflappable 0.2.0 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] [stderr] Updating crates.io index [INFO] [stderr] Locking 5 packages to latest compatible versions [INFO] [stderr] Adding embedded-hal v0.2.7 (available: v1.0.0) [INFO] [stderr] Adding embedded-hal-mock v0.7.2 (available: v0.11.1) [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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 83a2e5c28e3e2629eed7c8070f5103ea9d8c31d72539137e0e75b606a6c18574 [INFO] running `Command { std: "docker" "start" "-a" "83a2e5c28e3e2629eed7c8070f5103ea9d8c31d72539137e0e75b606a6c18574", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "83a2e5c28e3e2629eed7c8070f5103ea9d8c31d72539137e0e75b606a6c18574", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "83a2e5c28e3e2629eed7c8070f5103ea9d8c31d72539137e0e75b606a6c18574", kill_on_drop: false }` [INFO] [stdout] 83a2e5c28e3e2629eed7c8070f5103ea9d8c31d72539137e0e75b606a6c18574 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 3454e19179848715a0f928d8ce06ccef304bab3771113c6d5014d3d3c9bb7612 [INFO] running `Command { std: "docker" "start" "-a" "3454e19179848715a0f928d8ce06ccef304bab3771113c6d5014d3d3c9bb7612", kill_on_drop: false }` [INFO] [stderr] Checking embedded-hal-mock v0.7.2 [INFO] [stderr] Checking unflappable v0.2.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/lib.rs:488:24 [INFO] [stdout] | [INFO] [stdout] 488 | pub unsafe fn init(&self, pin: Pin) -> Result, InitError> { [INFO] [stdout] | ^^^^^ ^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 488 | pub unsafe fn init(&self, pin: Pin) -> Result, InitError> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/lib.rs:504:20 [INFO] [stdout] | [INFO] [stdout] 504 | fn init_linted(&self, pin: Pin) -> Result, InitError> { [INFO] [stdout] | ^^^^^ ^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 504 | fn init_linted(&self, pin: Pin) -> Result, InitError> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/lib.rs:812:52 [INFO] [stdout] | [INFO] [stdout] 812 | fn is_high(&self) -> Result { [INFO] [stdout] | ____________________________________________________^ [INFO] [stdout] 813 | | let state_ptr = self.storage.get(); [INFO] [stdout] 814 | | // This is safe since the read is atomic. [INFO] [stdout] 815 | | let state = unsafe { *state_ptr }; [INFO] [stdout] 816 | | let flag = state & Cfg::state_mask(); [INFO] [stdout] 817 | | Ok(flag != Cfg::zero()) [INFO] [stdout] 818 | | } [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 [INFO] [stdout] --> src/lib.rs:817:9 [INFO] [stdout] | [INFO] [stdout] 817 | Ok(flag != Cfg::zero()) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/lib.rs:821:51 [INFO] [stdout] | [INFO] [stdout] 821 | fn is_low(&self) -> Result { [INFO] [stdout] | ___________________________________________________^ [INFO] [stdout] 822 | | let state_ptr = self.storage.get(); [INFO] [stdout] 823 | | // This is safe since the read is atomic. [INFO] [stdout] 824 | | let state = unsafe { *state_ptr }; [INFO] [stdout] 825 | | let flag = state & Cfg::state_mask(); [INFO] [stdout] 826 | | Ok(flag == Cfg::zero()) [INFO] [stdout] 827 | | } [INFO] [stdout] | |_____^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/lib.rs:826:9 [INFO] [stdout] | [INFO] [stdout] 826 | Ok(flag == Cfg::zero()) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `unflappable` (lib) due to 4 previous errors; 2 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "3454e19179848715a0f928d8ce06ccef304bab3771113c6d5014d3d3c9bb7612", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3454e19179848715a0f928d8ce06ccef304bab3771113c6d5014d3d3c9bb7612", kill_on_drop: false }` [INFO] [stdout] 3454e19179848715a0f928d8ce06ccef304bab3771113c6d5014d3d3c9bb7612