[INFO] cloning repository https://github.com/fifth-postulate/double-memory [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fifth-postulate/double-memory" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffifth-postulate%2Fdouble-memory", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffifth-postulate%2Fdouble-memory'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 09d21bcdd7f40abb4c8ccc3091951a0cf8e9ff51 [INFO] checking fifth-postulate/double-memory/09d21bcdd7f40abb4c8ccc3091951a0cf8e9ff51 against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffifth-postulate%2Fdouble-memory" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/fifth-postulate/double-memory on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/fifth-postulate/double-memory [INFO] finished tweaking git repo https://github.com/fifth-postulate/double-memory [INFO] tweaked toml for git repo https://github.com/fifth-postulate/double-memory written to /workspace/builds/worker-4-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/fifth-postulate/double-memory 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" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded petgraph v0.4.13 [INFO] [stderr] Downloaded fixedbitset v0.1.9 [INFO] [stderr] Downloaded ordermap v0.3.5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 23dc9e80ff221e813ceef40fb939c5be85f6901cefe3dc0129ea6b60dbd8da14 [INFO] running `Command { std: "docker" "start" "-a" "23dc9e80ff221e813ceef40fb939c5be85f6901cefe3dc0129ea6b60dbd8da14", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "23dc9e80ff221e813ceef40fb939c5be85f6901cefe3dc0129ea6b60dbd8da14", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "23dc9e80ff221e813ceef40fb939c5be85f6901cefe3dc0129ea6b60dbd8da14", kill_on_drop: false }` [INFO] [stdout] 23dc9e80ff221e813ceef40fb939c5be85f6901cefe3dc0129ea6b60dbd8da14 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 1c2eb7a5a4b70999bf016607b2badff87d6d517fa4a585b8ccad26ee4073a0af [INFO] running `Command { std: "docker" "start" "-a" "1c2eb7a5a4b70999bf016607b2badff87d6d517fa4a585b8ccad26ee4073a0af", kill_on_drop: false }` [INFO] [stderr] Checking fixedbitset v0.1.9 [INFO] [stderr] Checking ordermap v0.3.5 [INFO] [stderr] Checking petgraph v0.4.13 [INFO] [stderr] Checking matching v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: elided lifetime has a name [INFO] [stdout] --> src/lib.rs:15:88 [INFO] [stdout] | [INFO] [stdout] 15 | pub fn maximal_matching<'a, N, E, I>(graph: &'a Graph) -> Matching [INFO] [stdout] | -- lifetime `'a` declared here ^ this elided lifetime gets resolved as `'a` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(elided_named_lifetimes)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: elided lifetime has a name [INFO] [stdout] --> src/lib.rs:15:88 [INFO] [stdout] | [INFO] [stdout] 15 | pub fn maximal_matching<'a, N, E, I>(graph: &'a Graph) -> Matching [INFO] [stdout] | -- lifetime `'a` declared here ^ this elided lifetime gets resolved as `'a` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(elided_named_lifetimes)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0283]: type annotations needed [INFO] [stdout] --> src/lib.rs:49:41 [INFO] [stdout] | [INFO] [stdout] 49 | let path_edges = Set::from(path.into()); [INFO] [stdout] | --- ^^^^ [INFO] [stdout] | | [INFO] [stdout] | type must be known at this point [INFO] [stdout] | [INFO] [stdout] = note: multiple `impl`s satisfying `HashSet<&EdgeIndex>: From<_>` found in the following crates: `core`, `std`: [INFO] [stdout] - impl From<[T; N]> for HashSet [INFO] [stdout] where the constant `N` has type `usize`, T: Eq, T: Hash; [INFO] [stdout] - impl From for T; [INFO] [stdout] help: try using a fully qualified path to specify the expected types [INFO] [stdout] | [INFO] [stdout] 49 | let path_edges = Set::from( as Into>::into(path)); [INFO] [stdout] | +++++++++++++++++++++++++++++++ ~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0283]: type annotations needed [INFO] [stdout] --> src/lib.rs:49:41 [INFO] [stdout] | [INFO] [stdout] 49 | let path_edges = Set::from(path.into()); [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] note: multiple `impl`s satisfying `Path<'_, I>: Into<_>` found [INFO] [stdout] --> src/lib.rs:88:1 [INFO] [stdout] | [INFO] [stdout] 88 | / impl<'a, I> Into>> for Path<'a, I> [INFO] [stdout] 89 | | where [INFO] [stdout] 90 | | I: Eq + Hash, [INFO] [stdout] | |_________________^ [INFO] [stdout] = note: and another `impl` found in the `core` crate: [INFO] [stdout] - impl Into for T [INFO] [stdout] where U: From; [INFO] [stdout] help: try using a fully qualified path to specify the expected types [INFO] [stdout] | [INFO] [stdout] 49 | let path_edges = Set::from( as Into>::into(path)); [INFO] [stdout] | +++++++++++++++++++++++++++++++ ~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0283]: type annotations needed [INFO] [stdout] --> src/lib.rs:49:41 [INFO] [stdout] | [INFO] [stdout] 49 | let path_edges = Set::from(path.into()); [INFO] [stdout] | --- ^^^^ [INFO] [stdout] | | [INFO] [stdout] | type must be known at this point [INFO] [stdout] | [INFO] [stdout] = note: multiple `impl`s satisfying `HashSet<&EdgeIndex>: From<_>` found in the following crates: `core`, `std`: [INFO] [stdout] - impl From<[T; N]> for HashSet [INFO] [stdout] where the constant `N` has type `usize`, T: Eq, T: Hash; [INFO] [stdout] - impl From for T; [INFO] [stdout] help: try using a fully qualified path to specify the expected types [INFO] [stdout] | [INFO] [stdout] 49 | let path_edges = Set::from( as Into>::into(path)); [INFO] [stdout] | +++++++++++++++++++++++++++++++ ~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0283]: type annotations needed [INFO] [stdout] --> src/lib.rs:49:41 [INFO] [stdout] | [INFO] [stdout] 49 | let path_edges = Set::from(path.into()); [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] note: multiple `impl`s satisfying `Path<'_, I>: Into<_>` found [INFO] [stdout] --> src/lib.rs:88:1 [INFO] [stdout] | [INFO] [stdout] 88 | / impl<'a, I> Into>> for Path<'a, I> [INFO] [stdout] 89 | | where [INFO] [stdout] 90 | | I: Eq + Hash, [INFO] [stdout] | |_________________^ [INFO] [stdout] = note: and another `impl` found in the `core` crate: [INFO] [stdout] - impl Into for T [INFO] [stdout] where U: From; [INFO] [stdout] help: try using a fully qualified path to specify the expected types [INFO] [stdout] | [INFO] [stdout] 49 | let path_edges = Set::from( as Into>::into(path)); [INFO] [stdout] | +++++++++++++++++++++++++++++++ ~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `graph` [INFO] [stdout] --> src/lib.rs:59:5 [INFO] [stdout] | [INFO] [stdout] 59 | graph: &'a Graph, [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_graph` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `graph` [INFO] [stdout] --> src/lib.rs:59:5 [INFO] [stdout] | [INFO] [stdout] 59 | graph: &'a Graph, [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_graph` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `matching` [INFO] [stdout] --> src/lib.rs:60:5 [INFO] [stdout] | [INFO] [stdout] 60 | matching: &Matching<'a, I>, [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_matching` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `matching` [INFO] [stdout] --> src/lib.rs:60:5 [INFO] [stdout] | [INFO] [stdout] 60 | matching: &Matching<'a, I>, [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_matching` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 2 previous errors; 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0283`. [INFO] [stdout] [INFO] [stdout] error: aborting due to 2 previous errors; 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0283`. [INFO] [stdout] [INFO] [stderr] error: could not compile `matching` (lib) due to 3 previous errors; 3 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: could not compile `matching` (lib test) due to 3 previous errors; 3 warnings emitted [INFO] running `Command { std: "docker" "inspect" "1c2eb7a5a4b70999bf016607b2badff87d6d517fa4a585b8ccad26ee4073a0af", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1c2eb7a5a4b70999bf016607b2badff87d6d517fa4a585b8ccad26ee4073a0af", kill_on_drop: false }` [INFO] [stdout] 1c2eb7a5a4b70999bf016607b2badff87d6d517fa4a585b8ccad26ee4073a0af