[INFO] fetching crate macro_railroad 0.1.5...
[INFO] checking macro_railroad-0.1.5 against try#23ffd2897cbb44320ca18dfe4d05dbacb37d55e0 for pr-115950
[INFO] extracting crate macro_railroad 0.1.5 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate macro_railroad 0.1.5 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 macro_railroad 0.1.5
[INFO] finished tweaking crates.io crate macro_railroad 0.1.5
[INFO] tweaked toml for crates.io crate macro_railroad 0.1.5 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate crates.io crate macro_railroad 0.1.5 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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 9395b3544f57b4ac3b189a24806fb59f7ccaf154726a30e690e7a328fd8934d2
[INFO] running `Command { std: "docker" "start" "-a" "9395b3544f57b4ac3b189a24806fb59f7ccaf154726a30e690e7a328fd8934d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9395b3544f57b4ac3b189a24806fb59f7ccaf154726a30e690e7a328fd8934d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9395b3544f57b4ac3b189a24806fb59f7ccaf154726a30e690e7a328fd8934d2", kill_on_drop: false }`
[INFO] [stdout] 9395b3544f57b4ac3b189a24806fb59f7ccaf154726a30e690e7a328fd8934d2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 935aa3c3f781f842368f277c47211902b5c1388b73d6b874c8a759594da39da8
[INFO] running `Command { std: "docker" "start" "-a" "935aa3c3f781f842368f277c47211902b5c1388b73d6b874c8a759594da39da8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.142
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling io-lifetimes v1.0.10
[INFO] [stderr]    Compiling rustix v0.37.17
[INFO] [stderr]     Checking unicode-ident v1.0.8
[INFO] [stderr]     Checking linux-raw-sys v0.3.6
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]     Checking htmlescape v0.3.1
[INFO] [stderr]     Checking fastrand v1.9.0
[INFO] [stderr]     Checking railroad v0.2.0
[INFO] [stderr]     Checking syn v2.0.15
[INFO] [stderr]     Checking macro_railroad v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0505]: cannot move out of `mr.rules` because it is borrowed
[INFO] [stdout]    --> src/diagram.rs:207:33
[INFO] [stdout]     |
[INFO] [stdout] 200 |     mut mr: lowering::MacroRules,
[INFO] [stdout]     |     ------ binding `mr` declared here
[INFO] [stdout] ...
[INFO] [stdout] 203 |     let legend = if legend { create_legend(&mut mr) } else { None };
[INFO] [stdout]     |                                            ------- borrow of `mr` occurs here
[INFO] [stdout] ...
[INFO] [stdout] 207 |         Box::new(into_primitive(mr.rules)),
[INFO] [stdout]     |                                 ^^^^^^^^ move out of `mr.rules` occurs here
[INFO] [stdout] ...
[INFO] [stdout] 218 |             railroad::Diagram::new(Box::new(combined))
[INFO] [stdout]     |             ------------------------------------------ returning this value requires that `mr` is borrowed for `'static`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0515]: cannot return value referencing function parameter `mr`
[INFO] [stdout]    --> src/diagram.rs:218:13
[INFO] [stdout]     |
[INFO] [stdout] 203 |     let legend = if legend { create_legend(&mut mr) } else { None };
[INFO] [stdout]     |                                            ------- `mr` is borrowed here
[INFO] [stdout] ...
[INFO] [stdout] 218 |             railroad::Diagram::new(Box::new(combined))
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ returns a value referencing data owned by the current function
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0505, E0515.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0505`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `macro_railroad` (lib) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "935aa3c3f781f842368f277c47211902b5c1388b73d6b874c8a759594da39da8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "935aa3c3f781f842368f277c47211902b5c1388b73d6b874c8a759594da39da8", kill_on_drop: false }`
[INFO] [stdout] 935aa3c3f781f842368f277c47211902b5c1388b73d6b874c8a759594da39da8