[INFO] fetching crate swls 0.2.2...
[INFO] checking swls-0.2.2 against try#8e819ff5434466e9a823e03871a1775ac7d84ddf for pr-156027
[INFO] extracting crate swls 0.2.2 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate swls 0.2.2
[INFO] finished tweaking crates.io crate swls 0.2.2
[INFO] tweaked toml for crates.io crate swls 0.2.2 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate swls 0.2.2 on toolchain 8e819ff5434466e9a823e03871a1775ac7d84ddf
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8e819ff5434466e9a823e03871a1775ac7d84ddf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate swls 0.2.2 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" "+8e819ff5434466e9a823e03871a1775ac7d84ddf" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+8e819ff5434466e9a823e03871a1775ac7d84ddf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b93f185ea2edf768481bb8dd97a213289d07aa13fa7dae1204eb1ab0a5711b4c
[INFO] running `Command { std: "docker" "start" "-a" "b93f185ea2edf768481bb8dd97a213289d07aa13fa7dae1204eb1ab0a5711b4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b93f185ea2edf768481bb8dd97a213289d07aa13fa7dae1204eb1ab0a5711b4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b93f185ea2edf768481bb8dd97a213289d07aa13fa7dae1204eb1ab0a5711b4c", kill_on_drop: false }`
[INFO] [stdout] b93f185ea2edf768481bb8dd97a213289d07aa13fa7dae1204eb1ab0a5711b4c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+8e819ff5434466e9a823e03871a1775ac7d84ddf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 44a22641b0c69b1a4fbc866584cf262d5d2326f8609cb4f20f3ed90a7ed84833
[INFO] running `Command { std: "docker" "start" "-a" "44a22641b0c69b1a4fbc866584cf262d5d2326f8609cb4f20f3ed90a7ed84833", kill_on_drop: false }`
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[INFO] [stderr]    Compiling tower-lsp-macros v0.8.0
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[INFO] [stderr]    Compiling vergen v8.3.2
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[INFO] [stdout] error[E0499]: cannot borrow `*context` as mutable more than once at a time
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/spareval-0.2.6/src/expression.rs:97:31
[INFO] [stdout]    |
[INFO] [stdout] 96 |             let lookup = context.build_variable_lookup(v);
[INFO] [stdout]    |                          ------- first mutable borrow occurs here
[INFO] [stdout] 97 |             let externalize = context.build_externalize_expression_term();
[INFO] [stdout]    |                               ^^^^^^^ second mutable borrow occurs here
[INFO] [stdout] 98 |             Rc::new(move |t| externalize(lookup(t)?))
[INFO] [stdout]    |                                          ------ first borrow later captured here by closure
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking tracing-flame v0.2.0
[INFO] [stdout] For more information about this error, try `rustc --explain E0499`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `spareval` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "44a22641b0c69b1a4fbc866584cf262d5d2326f8609cb4f20f3ed90a7ed84833", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44a22641b0c69b1a4fbc866584cf262d5d2326f8609cb4f20f3ed90a7ed84833", kill_on_drop: false }`
[INFO] [stdout] 44a22641b0c69b1a4fbc866584cf262d5d2326f8609cb4f20f3ed90a7ed84833
