[INFO] cloning repository https://github.com/asuyou/selfmine
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/asuyou/selfmine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fasuyou%2Fselfmine", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fasuyou%2Fselfmine'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 46a9dcbf6a9c4d2d52c27caa0a0676a6fe09d7ff
[INFO] checking asuyou/selfmine against try#23ffd2897cbb44320ca18dfe4d05dbacb37d55e0 for pr-115950
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fasuyou%2Fselfmine" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/asuyou/selfmine 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 git repo https://github.com/asuyou/selfmine
[INFO] finished tweaking git repo https://github.com/asuyou/selfmine
[INFO] tweaked toml for git repo https://github.com/asuyou/selfmine written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/asuyou/selfmine 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] 01b300954abf9f5b094eecaaedffbd9d1dab1272ff271f6f550148b4da03e55c
[INFO] running `Command { std: "docker" "start" "-a" "01b300954abf9f5b094eecaaedffbd9d1dab1272ff271f6f550148b4da03e55c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "01b300954abf9f5b094eecaaedffbd9d1dab1272ff271f6f550148b4da03e55c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01b300954abf9f5b094eecaaedffbd9d1dab1272ff271f6f550148b4da03e55c", kill_on_drop: false }`
[INFO] [stdout] 01b300954abf9f5b094eecaaedffbd9d1dab1272ff271f6f550148b4da03e55c
[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] 72987123b4d6524372412fbaf291d6279251e7b2aa4964d30c2e466abb85b6bb
[INFO] running `Command { std: "docker" "start" "-a" "72987123b4d6524372412fbaf291d6279251e7b2aa4964d30c2e466abb85b6bb", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking selfmine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0502]: cannot borrow `self.pos_open` as immutable because it is also borrowed as mutable
[INFO] [stdout]    --> src/game.rs:115:15
[INFO] [stdout]     |
[INFO] [stdout] 112 |     pub fn iter_neighbors_open(&mut self, pos: Position) -> impl Iterator<Item = Position> + '_ {
[INFO] [stdout]     |                                - let's call the lifetime of this reference `'1`
[INFO] [stdout] 113 |       self
[INFO] [stdout]     |       ----
[INFO] [stdout]     |       |
[INFO] [stdout]     |  _____mutable borrow occurs here
[INFO] [stdout]     | |
[INFO] [stdout] 114 | |       .iter_neighbors(pos)
[INFO] [stdout] 115 | |       .filter(|pos| self.pos_open.contains(&pos))
[INFO] [stdout]     | |_______________^^^^^_-------------_______________- returning this value requires that `*self` is borrowed for `'1`
[INFO] [stdout]     |                 |     |
[INFO] [stdout]     |                 |     second borrow occurs due to use of `self.pos_open` in closure
[INFO] [stdout]     |                 immutable borrow occurs here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0502]: cannot borrow `self.pos_open` as immutable because it is also borrowed as mutable
[INFO] [stdout]    --> src/game.rs:115:15
[INFO] [stdout]     |
[INFO] [stdout] 112 |     pub fn iter_neighbors_open(&mut self, pos: Position) -> impl Iterator<Item = Position> + '_ {
[INFO] [stdout]     |                                - let's call the lifetime of this reference `'1`
[INFO] [stdout] 113 |       self
[INFO] [stdout]     |       ----
[INFO] [stdout]     |       |
[INFO] [stdout]     |  _____mutable borrow occurs here
[INFO] [stdout]     | |
[INFO] [stdout] 114 | |       .iter_neighbors(pos)
[INFO] [stdout] 115 | |       .filter(|pos| self.pos_open.contains(&pos))
[INFO] [stdout]     | |_______________^^^^^_-------------_______________- returning this value requires that `*self` is borrowed for `'1`
[INFO] [stdout]     |                 |     |
[INFO] [stdout]     |                 |     second borrow occurs due to use of `self.pos_open` in closure
[INFO] [stdout]     |                 immutable borrow occurs here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0502`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0502`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `selfmine` (bin "selfmine") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `selfmine` (bin "selfmine" test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "72987123b4d6524372412fbaf291d6279251e7b2aa4964d30c2e466abb85b6bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72987123b4d6524372412fbaf291d6279251e7b2aa4964d30c2e466abb85b6bb", kill_on_drop: false }`
[INFO] [stdout] 72987123b4d6524372412fbaf291d6279251e7b2aa4964d30c2e466abb85b6bb