[INFO] fetching crate rmcmc 0.1.0...
[INFO] testing rmcmc-0.1.0 against 1.75.0 for beta-1.76-1
[INFO] extracting crate rmcmc 0.1.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate rmcmc 0.1.0 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rmcmc 0.1.0
[INFO] finished tweaking crates.io crate rmcmc 0.1.0
[INFO] tweaked toml for crates.io crate rmcmc 0.1.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded special v0.7.8
[INFO] [stderr]   Downloaded rv v0.4.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a428e3fcfe75aa39ccce8007dfb414478a023056b33db3eead268a5d3826f634
[INFO] running `Command { std: "docker" "start" "-a" "a428e3fcfe75aa39ccce8007dfb414478a023056b33db3eead268a5d3826f634", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a428e3fcfe75aa39ccce8007dfb414478a023056b33db3eead268a5d3826f634", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a428e3fcfe75aa39ccce8007dfb414478a023056b33db3eead268a5d3826f634", kill_on_drop: false }`
[INFO] [stdout] a428e3fcfe75aa39ccce8007dfb414478a023056b33db3eead268a5d3826f634
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5e645ff706f9324ec77629cef3c425a65e5abe9fee51c2e3f689ccceae97d6b2
[INFO] running `Command { std: "docker" "start" "-a" "5e645ff706f9324ec77629cef3c425a65e5abe9fee51c2e3f689ccceae97d6b2", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling libm v0.1.4
[INFO] [stderr]    Compiling typenum v1.17.0
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling matrixmultiply v0.1.15
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rawpointer v0.1.0
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling special v0.7.8
[INFO] [stderr]    Compiling approx v0.3.2
[INFO] [stderr]    Compiling generic-array v0.11.2
[INFO] [stderr]    Compiling alga v0.7.2
[INFO] [stderr]    Compiling nalgebra v0.16.14
[INFO] [stderr]    Compiling num v0.2.1
[INFO] [stderr]    Compiling rv v0.4.1
[INFO] [stdout] error[E0502]: cannot borrow `summed` as immutable because it is also borrowed as mutable
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/rv-0.4.1/src/misc/func.rs:55:22
[INFO] [stdout]    |
[INFO] [stdout] 55 |         summed[i] += summed[i - 1].clone();
[INFO] [stdout]    |         -------------^^^^^^---------------
[INFO] [stdout]    |         |            |
[INFO] [stdout]    |         |            immutable borrow occurs here
[INFO] [stdout]    |         mutable borrow occurs here
[INFO] [stdout]    |         mutable borrow later used here
[INFO] [stdout]    |
[INFO] [stdout] help: try adding a local storing this...
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/rv-0.4.1/src/misc/func.rs:55:28
[INFO] [stdout]    |
[INFO] [stdout] 55 |         summed[i] += summed[i - 1].clone();
[INFO] [stdout]    |                            ^^^^^^^
[INFO] [stdout] help: ...and then using that local here
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/rv-0.4.1/src/misc/func.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |         summed[i] += summed[i - 1].clone();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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] [stderr] error: could not compile `rv` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "5e645ff706f9324ec77629cef3c425a65e5abe9fee51c2e3f689ccceae97d6b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e645ff706f9324ec77629cef3c425a65e5abe9fee51c2e3f689ccceae97d6b2", kill_on_drop: false }`
[INFO] [stdout] 5e645ff706f9324ec77629cef3c425a65e5abe9fee51c2e3f689ccceae97d6b2
