[INFO] fetching crate genref 0.8.0... [INFO] checking genref-0.8.0 against try#23ffd2897cbb44320ca18dfe4d05dbacb37d55e0 for pr-115950 [INFO] extracting crate genref 0.8.0 into /workspace/builds/worker-0-tc2/source [INFO] validating manifest of crates.io crate genref 0.8.0 on toolchain 23ffd2897cbb44320ca18dfe4d05dbacb37d55e0 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+23ffd2897cbb44320ca18dfe4d05dbacb37d55e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate genref 0.8.0 [INFO] finished tweaking crates.io crate genref 0.8.0 [INFO] tweaked toml for crates.io crate genref 0.8.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+23ffd2897cbb44320ca18dfe4d05dbacb37d55e0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+23ffd2897cbb44320ca18dfe4d05dbacb37d55e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4f8da3c744d2da974e54ce020a79f4ad54313e914ebeaab8fc086f07e8d8b066" "/opt/rustwide/cargo-home/bin/cargo" "+23ffd2897cbb44320ca18dfe4d05dbacb37d55e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 58abf4ddfd913d6391460f6a712203f740b6333c1b2110e6230937b67b4b8741 [INFO] running `Command { std: "docker" "start" "-a" "58abf4ddfd913d6391460f6a712203f740b6333c1b2110e6230937b67b4b8741", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "58abf4ddfd913d6391460f6a712203f740b6333c1b2110e6230937b67b4b8741", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "58abf4ddfd913d6391460f6a712203f740b6333c1b2110e6230937b67b4b8741", kill_on_drop: false }` [INFO] [stdout] 58abf4ddfd913d6391460f6a712203f740b6333c1b2110e6230937b67b4b8741 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "-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@sha256:4f8da3c744d2da974e54ce020a79f4ad54313e914ebeaab8fc086f07e8d8b066" "/opt/rustwide/cargo-home/bin/cargo" "+23ffd2897cbb44320ca18dfe4d05dbacb37d55e0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 07552ed3e9ebab739e74f4a2e5e7b212236681a3dd8248aa5b8e69708f139e02 [INFO] running `Command { std: "docker" "start" "-a" "07552ed3e9ebab739e74f4a2e5e7b212236681a3dd8248aa5b8e69708f139e02", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Checking genref v0.8.0 (/opt/rustwide/workdir) [INFO] [stdout] error: lifetime may not live long enough [INFO] [stdout] --> src/lib.rs:198:67 [INFO] [stdout] | [INFO] [stdout] 198 | fn clear(wl: &mut Writing) -> impl Drop { DROPQUEUE.with(|dq| dq.borrow_mut().clear_(wl)) } [INFO] [stdout] | --- ^^^^^^^^^^^^^^^^^^^^^^^^^^ returning this value requires that `'1` must outlive `'2` [INFO] [stdout] | | | [INFO] [stdout] | | return type of closure `impl Drop` contains a lifetime `'2` [INFO] [stdout] | has type `&'1 RefCell` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0515]: cannot return value referencing temporary value [INFO] [stdout] --> src/lib.rs:198:67 [INFO] [stdout] | [INFO] [stdout] 198 | fn clear(wl: &mut Writing) -> impl Drop { DROPQUEUE.with(|dq| dq.borrow_mut().clear_(wl)) } [INFO] [stdout] | ---------------^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | returns a value referencing data owned by the current function [INFO] [stdout] | temporary value created here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: lifetime may not live long enough [INFO] [stdout] --> src/lib.rs:198:67 [INFO] [stdout] | [INFO] [stdout] 198 | fn clear(wl: &mut Writing) -> impl Drop { DROPQUEUE.with(|dq| dq.borrow_mut().clear_(wl)) } [INFO] [stdout] | --- ^^^^^^^^^^^^^^^^^^^^^^^^^^ returning this value requires that `'1` must outlive `'2` [INFO] [stdout] | | | [INFO] [stdout] | | return type of closure `impl Drop` contains a lifetime `'2` [INFO] [stdout] | has type `&'1 RefCell` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0515]: cannot return value referencing temporary value [INFO] [stdout] --> src/lib.rs:198:67 [INFO] [stdout] | [INFO] [stdout] 198 | fn clear(wl: &mut Writing) -> impl Drop { DROPQUEUE.with(|dq| dq.borrow_mut().clear_(wl)) } [INFO] [stdout] | ---------------^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | returns a value referencing data owned by the current function [INFO] [stdout] | temporary value created here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0716]: temporary value dropped while borrowed [INFO] [stdout] --> src/global.rs:207:47 [INFO] [stdout] | [INFO] [stdout] 207 | fn clear(wl: &mut Writing) -> impl Drop { DROPQUEUE.lock().clear_(wl) } [INFO] [stdout] | - ^^^^^^^^^^^^^^^^----------- - temporary value is freed at the end of this statement [INFO] [stdout] | | | [INFO] [stdout] | | creates a temporary value which is freed while still in use [INFO] [stdout] | | argument requires that borrow lasts for `'1` [INFO] [stdout] | let's call the lifetime of this reference `'1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0716]: temporary value dropped while borrowed [INFO] [stdout] --> src/global.rs:207:47 [INFO] [stdout] | [INFO] [stdout] 207 | fn clear(wl: &mut Writing) -> impl Drop { DROPQUEUE.lock().clear_(wl) } [INFO] [stdout] | - ^^^^^^^^^^^^^^^^----------- - temporary value is freed at the end of this statement [INFO] [stdout] | | | [INFO] [stdout] | | creates a temporary value which is freed while still in use [INFO] [stdout] | | argument requires that borrow lasts for `'1` [INFO] [stdout] | let's call the lifetime of this reference `'1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 3 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0515, E0716. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0515`. [INFO] [stdout] [INFO] [stderr] error: could not compile `genref` (lib) due to 4 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error: aborting due to 3 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0515, E0716. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0515`. [INFO] [stdout] [INFO] [stderr] error: could not compile `genref` (lib test) due to 4 previous errors [INFO] running `Command { std: "docker" "inspect" "07552ed3e9ebab739e74f4a2e5e7b212236681a3dd8248aa5b8e69708f139e02", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "07552ed3e9ebab739e74f4a2e5e7b212236681a3dd8248aa5b8e69708f139e02", kill_on_drop: false }` [INFO] [stdout] 07552ed3e9ebab739e74f4a2e5e7b212236681a3dd8248aa5b8e69708f139e02