[INFO] fetching crate logru 0.2.0...
[INFO] checking logru-0.2.0 against try#23ffd2897cbb44320ca18dfe4d05dbacb37d55e0 for pr-115950
[INFO] extracting crate logru 0.2.0 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate logru 0.2.0 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 logru 0.2.0
[INFO] finished tweaking crates.io crate logru 0.2.0
[INFO] tweaked toml for crates.io crate logru 0.2.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate crates.io crate logru 0.2.0 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" "+23ffd2897cbb44320ca18dfe4d05dbacb37d55e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 6a851585693ef582e4e2556d895b067a59a435644414a0277895ea2e0180cd29
[INFO] running `Command { std: "docker" "start" "-a" "6a851585693ef582e4e2556d895b067a59a435644414a0277895ea2e0180cd29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6a851585693ef582e4e2556d895b067a59a435644414a0277895ea2e0180cd29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a851585693ef582e4e2556d895b067a59a435644414a0277895ea2e0180cd29", kill_on_drop: false }`
[INFO] [stdout] 6a851585693ef582e4e2556d895b067a59a435644414a0277895ea2e0180cd29
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 39ee71a62aa0614b360d18883ec2a49d95256c0eef17a2187d0b903093ced52f
[INFO] running `Command { std: "docker" "start" "-a" "39ee71a62aa0614b360d18883ec2a49d95256c0eef17a2187d0b903093ced52f", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
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[INFO] [stderr]    Compiling proc-macro2 v1.0.29
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[INFO] [stderr]     Checking logru v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0499]: cannot borrow `*self` as mutable more than once at a time
[INFO] [stdout]    --> src/solver.rs:457:12
[INFO] [stdout]     |
[INFO] [stdout] 454 |         let conv_rule_head = self.terms.instantiate_blueprint(head_blueprint, var_offset);
[INFO] [stdout]     |                              ---------- first mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 457 |         if self.unify(goal_term, instantiated_rule_head) {
[INFO] [stdout]     |            ^^^^ second mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 467 |     }
[INFO] [stdout]     |     - first borrow might be used here, when `conv_rule_head` is dropped and runs the destructor for type `impl Fn(TermId) -> TermId`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0499]: cannot borrow `self.terms` as mutable more than once at a time
[INFO] [stdout]    --> src/solver.rs:460:34
[INFO] [stdout]     |
[INFO] [stdout] 454 |         let conv_rule_head = self.terms.instantiate_blueprint(head_blueprint, var_offset);
[INFO] [stdout]     |                              ---------- first mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 460 |             let conv_rule_tail = self.terms.instantiate_blueprint(tail_blueprint, var_offset);
[INFO] [stdout]     |                                  ^^^^^^^^^^ second mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 467 |     }
[INFO] [stdout]     |     - first borrow might be used here, when `conv_rule_head` is dropped and runs the destructor for type `impl Fn(TermId) -> TermId`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: lifetime may not live long enough
[INFO] [stdout]    --> src/solver.rs:463:13
[INFO] [stdout]     |
[INFO] [stdout] 443 |     fn unify_rule<'a>(
[INFO] [stdout]     |                   -- lifetime `'a` defined here
[INFO] [stdout] 444 |         &mut self,
[INFO] [stdout]     |         - let's call the lifetime of this reference `'1`
[INFO] [stdout] ...
[INFO] [stdout] 463 |             Some(tail.iter().rev().map(move |tail| conv_rule_tail(*tail)))
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ method was supposed to return data with lifetime `'a` but it is returning data with lifetime `'1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0499`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `logru` (lib) due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "39ee71a62aa0614b360d18883ec2a49d95256c0eef17a2187d0b903093ced52f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39ee71a62aa0614b360d18883ec2a49d95256c0eef17a2187d0b903093ced52f", kill_on_drop: false }`
[INFO] [stdout] 39ee71a62aa0614b360d18883ec2a49d95256c0eef17a2187d0b903093ced52f