[INFO] cloning repository https://github.com/hsanzg/exact-covers
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hsanzg/exact-covers" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhsanzg%2Fexact-covers", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhsanzg%2Fexact-covers'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9b6abf3f96554f859b124935c0476673998fe291
[INFO] checking hsanzg/exact-covers against 5f93549e108157f071a34f220b74b25690496aa1 for pr-162986
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhsanzg%2Fexact-covers" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/hsanzg/exact-covers
[INFO] removed 0 missing examples
[INFO] finished tweaking git repo https://github.com/hsanzg/exact-covers
[INFO] tweaked toml for git repo https://github.com/hsanzg/exact-covers written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/hsanzg/exact-covers on toolchain 5f93549e108157f071a34f220b74b25690496aa1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5f93549e108157f071a34f220b74b25690496aa1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/hsanzg/exact-covers 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" "+5f93549e108157f071a34f220b74b25690496aa1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: `package.homepage` is redundant with `package.repository`
[INFO] [stderr]   --> Cargo.toml:18:12
[INFO] [stderr]    |
[INFO] [stderr] 18 | homepage = "https://github.com/hsanzg/exact-covers"
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 23 | repository = "https://github.com/hsanzg/exact-covers"
[INFO] [stderr]    |              ----------------------------------------
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::redundant_homepage` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.homepage`
[INFO] [stderr] warning: `exact-covers` (manifest) generated 1 warning
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 8a2399d6ab63bb9a90501d0085c27d86f7c126e0c4f19fb7c27e61528b902882
[INFO] running `Command { std: "docker" "start" "8a2399d6ab63bb9a90501d0085c27d86f7c126e0c4f19fb7c27e61528b902882", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8a2399d6ab63bb9a90501d0085c27d86f7c126e0c4f19fb7c27e61528b902882", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "8a2399d6ab63bb9a90501d0085c27d86f7c126e0c4f19fb7c27e61528b902882" "/opt/rustwide/cargo-home/bin/cargo" "+5f93549e108157f071a34f220b74b25690496aa1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8a2399d6ab63bb9a90501d0085c27d86f7c126e0c4f19fb7c27e61528b902882", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "8a2399d6ab63bb9a90501d0085c27d86f7c126e0c4f19fb7c27e61528b902882" "/opt/rustwide/cargo-home/bin/cargo" "+5f93549e108157f071a34f220b74b25690496aa1" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] warning: `package.homepage` is redundant with `package.repository`
[INFO] [stderr]   --> Cargo.toml:18:12
[INFO] [stderr]    |
[INFO] [stderr] 18 | homepage = "https://github.com/hsanzg/exact-covers"
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 23 | repository = "https://github.com/hsanzg/exact-covers"
[INFO] [stderr]    |              ----------------------------------------
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::redundant_homepage` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.homepage`
[INFO] [stderr] warning: `exact-covers` (manifest) generated 1 warning
[INFO] [stderr]     Checking allocator-api2 v0.4.0
[INFO] [stderr]     Checking exact-covers v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: the type parameter `I` may not live long enough
[INFO] [stdout]   --> src/dc.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 |     F: FnMut(Solution<'_, 'i, I, C, Self>) -> ControlFlow<()>,
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `I` must outlive `'i`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #162200 <https://github.com/rust-lang/rust/issues/162200>
[INFO] [stdout]    = note: `#[forbid(unsatisfied_hrtb_arg)]` (part of `#[forbid(future_incompatible)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the type parameter `I` may not live long enough
[INFO] [stdout]   --> src/dc.rs:29:47
[INFO] [stdout]    |
[INFO] [stdout] 29 |     F: FnMut(Solution<'_, 'i, I, C, Self>) -> ControlFlow<()>,
[INFO] [stdout]    |                                               ^^^^^^^^^^^^^^^ `I` must outlive `'i`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #162200 <https://github.com/rust-lang/rust/issues/162200>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the trait bound `Self: Sized` is not satisfied
[INFO] [stdout]    --> src/lib.rs:226:8
[INFO] [stdout]     |
[INFO] [stdout] 226 |     F: FnMut(Solution<'_, 'i, I, C, Self>) -> ControlFlow<()>;
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #162200 <https://github.com/rust-lang/rust/issues/162200>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the trait bound `Self: Sized` is not satisfied
[INFO] [stdout]    --> src/lib.rs:226:47
[INFO] [stdout]     |
[INFO] [stdout] 226 |     F: FnMut(Solution<'_, 'i, I, C, Self>) -> ControlFlow<()>;
[INFO] [stdout]     |                                               ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #162200 <https://github.com/rust-lang/rust/issues/162200>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exact-covers` (lib) due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "8a2399d6ab63bb9a90501d0085c27d86f7c126e0c4f19fb7c27e61528b902882", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a2399d6ab63bb9a90501d0085c27d86f7c126e0c4f19fb7c27e61528b902882", kill_on_drop: false }`
[INFO] [stdout] 8a2399d6ab63bb9a90501d0085c27d86f7c126e0c4f19fb7c27e61528b902882
