[INFO] fetching crate some-error 0.5.0...
[INFO] checking some-error-0.5.0 against try#23ffd2897cbb44320ca18dfe4d05dbacb37d55e0 for pr-115950
[INFO] extracting crate some-error 0.5.0 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate some-error 0.5.0 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 some-error 0.5.0
[INFO] finished tweaking crates.io crate some-error 0.5.0
[INFO] tweaked toml for crates.io crate some-error 0.5.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+23ffd2897cbb44320ca18dfe4d05dbacb37d55e0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] bce13fe469868c7430f4bf1819151b24ebe7208480c44110b77435ef886c7e2a
[INFO] running `Command { std: "docker" "start" "-a" "bce13fe469868c7430f4bf1819151b24ebe7208480c44110b77435ef886c7e2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bce13fe469868c7430f4bf1819151b24ebe7208480c44110b77435ef886c7e2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bce13fe469868c7430f4bf1819151b24ebe7208480c44110b77435ef886c7e2a", kill_on_drop: false }`
[INFO] [stdout] bce13fe469868c7430f4bf1819151b24ebe7208480c44110b77435ef886c7e2a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 5bbe9b056f103b50747a14fa731d4b26716616e358b76af320e2686e6cc6a65b
[INFO] running `Command { std: "docker" "start" "-a" "5bbe9b056f103b50747a14fa731d4b26716616e358b76af320e2686e6cc6a65b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking unicode-ident v1.0.12
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking proc-macro2 v1.0.67
[INFO] [stderr]     Checking quote v1.0.33
[INFO] [stderr]     Checking some-error v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0506]: cannot assign to `function.sig.output` because it is borrowed
[INFO] [stdout]    --> src/lib.rs:244:5
[INFO] [stdout]     |
[INFO] [stdout] 240 |       let err_type = get_err_type(&mut function.sig.output);
[INFO] [stdout]     |                                   ------------------------ `function.sig.output` is borrowed here
[INFO] [stdout] ...
[INFO] [stdout] 244 |       function.sig.output = syn::parse_quote!(
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^ `function.sig.output` is assigned to here but it was already borrowed
[INFO] [stdout] ...
[INFO] [stdout] 248 | /     quote!(
[INFO] [stdout] 249 | |         #vis mod #ident {
[INFO] [stdout] 250 | |             #error_enum
[INFO] [stdout] 251 | |         }
[INFO] [stdout] 252 | |
[INFO] [stdout] 253 | |         #function
[INFO] [stdout] 254 | |     ).into()
[INFO] [stdout]     | |_____- borrow later used 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 E0506`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `some-error` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0506]: cannot assign to `function.sig.output` because it is borrowed
[INFO] [stdout]    --> src/lib.rs:244:5
[INFO] [stdout]     |
[INFO] [stdout] 240 |       let err_type = get_err_type(&mut function.sig.output);
[INFO] [stdout]     |                                   ------------------------ `function.sig.output` is borrowed here
[INFO] [stdout] ...
[INFO] [stdout] 244 |       function.sig.output = syn::parse_quote!(
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^ `function.sig.output` is assigned to here but it was already borrowed
[INFO] [stdout] ...
[INFO] [stdout] 248 | /     quote!(
[INFO] [stdout] 249 | |         #vis mod #ident {
[INFO] [stdout] 250 | |             #error_enum
[INFO] [stdout] 251 | |         }
[INFO] [stdout] 252 | |
[INFO] [stdout] 253 | |         #function
[INFO] [stdout] 254 | |     ).into()
[INFO] [stdout]     | |_____- borrow later used 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 E0506`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `some-error` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "5bbe9b056f103b50747a14fa731d4b26716616e358b76af320e2686e6cc6a65b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5bbe9b056f103b50747a14fa731d4b26716616e358b76af320e2686e6cc6a65b", kill_on_drop: false }`
[INFO] [stdout] 5bbe9b056f103b50747a14fa731d4b26716616e358b76af320e2686e6cc6a65b