[INFO] fetching crate similar 2.2.1...
[INFO] checking similar-2.2.1 against try#23ffd2897cbb44320ca18dfe4d05dbacb37d55e0 for pr-115950
[INFO] extracting crate similar 2.2.1 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate similar 2.2.1 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 similar 2.2.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate similar 2.2.1
[INFO] tweaked toml for crates.io crate similar 2.2.1 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate crates.io crate similar 2.2.1 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-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] 17b000b2d1552809cd8a141046b3dcd64f8830002d82e9cc54f7971696008f2d
[INFO] running `Command { std: "docker" "start" "-a" "17b000b2d1552809cd8a141046b3dcd64f8830002d82e9cc54f7971696008f2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "17b000b2d1552809cd8a141046b3dcd64f8830002d82e9cc54f7971696008f2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17b000b2d1552809cd8a141046b3dcd64f8830002d82e9cc54f7971696008f2d", kill_on_drop: false }`
[INFO] [stdout] 17b000b2d1552809cd8a141046b3dcd64f8830002d82e9cc54f7971696008f2d
[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] 157c395ea8f550ef5c1590374b06356858606a0bed9d990569071570b6d756ac
[INFO] running `Command { std: "docker" "start" "-a" "157c395ea8f550ef5c1590374b06356858606a0bed9d990569071570b6d756ac", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling libc v0.2.107
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.70
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking dtoa v0.4.8
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]     Checking similar v2.1.0
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking similar v2.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stdout] error: captured variable cannot escape `FnMut` closure body
[INFO] [stdout]    --> src/utils.rs:254:28
[INFO] [stdout]     |
[INFO] [stdout] 251 |     let remapper = TextDiffRemapper::from_text_diff(&diff, old, new);
[INFO] [stdout]     |         -------- variable defined here
[INFO] [stdout] ...
[INFO] [stdout] 254 |         .flat_map(move |x| remapper.iter_slices(x))
[INFO] [stdout]     |                          - --------^^^^^^^^^^^^^^^
[INFO] [stdout]     |                          | |
[INFO] [stdout]     |                          | returns a closure that contains a reference to a captured variable, which then escapes the closure body
[INFO] [stdout]     |                          | variable captured here
[INFO] [stdout]     |                          inferred to be a `FnMut` closure
[INFO] [stdout]     |
[INFO] [stdout]     = note: `FnMut` closures only have access to their captured variables while they are executing...
[INFO] [stdout]     = note: ...therefore, they cannot allow references to captured variables to escape
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: captured variable cannot escape `FnMut` closure body
[INFO] [stdout]    --> src/utils.rs:286:28
[INFO] [stdout]     |
[INFO] [stdout] 283 |     let remapper = TextDiffRemapper::from_text_diff(&diff, old, new);
[INFO] [stdout]     |         -------- variable defined here
[INFO] [stdout] ...
[INFO] [stdout] 286 |         .flat_map(move |x| remapper.iter_slices(x))
[INFO] [stdout]     |                          - --------^^^^^^^^^^^^^^^
[INFO] [stdout]     |                          | |
[INFO] [stdout]     |                          | returns a closure that contains a reference to a captured variable, which then escapes the closure body
[INFO] [stdout]     |                          | variable captured here
[INFO] [stdout]     |                          inferred to be a `FnMut` closure
[INFO] [stdout]     |
[INFO] [stdout]     = note: `FnMut` closures only have access to their captured variables while they are executing...
[INFO] [stdout]     = note: ...therefore, they cannot allow references to captured variables to escape
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `similar` (lib) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "157c395ea8f550ef5c1590374b06356858606a0bed9d990569071570b6d756ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "157c395ea8f550ef5c1590374b06356858606a0bed9d990569071570b6d756ac", kill_on_drop: false }`
[INFO] [stdout] 157c395ea8f550ef5c1590374b06356858606a0bed9d990569071570b6d756ac