[INFO] fetching crate monty-type-checking 0.0.21...
[INFO] checking monty-type-checking-0.0.21 against 49a6044d37d694890450f52ceaceb66277a36b1e for pr-161154
[INFO] extracting crate monty-type-checking 0.0.21 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate monty-type-checking 0.0.21
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate monty-type-checking 0.0.21
[INFO] tweaked toml for crates.io crate monty-type-checking 0.0.21 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate monty-type-checking 0.0.21 on toolchain 49a6044d37d694890450f52ceaceb66277a36b1e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+49a6044d37d694890450f52ceaceb66277a36b1e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate monty-type-checking 0.0.21 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" "+49a6044d37d694890450f52ceaceb66277a36b1e" "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/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 4dd2738a0be82b5ef5e240f5fcda8ed76a8a15fd9721987022d587408afcc3a5
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[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4dd2738a0be82b5ef5e240f5fcda8ed76a8a15fd9721987022d587408afcc3a5" "/opt/rustwide/cargo-home/bin/cargo" "+49a6044d37d694890450f52ceaceb66277a36b1e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] [stdout] error[E0502]: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/ty_python_semantic-0.0.2/src/types/call/bind.rs:5286:39
[INFO] [stdout]      |
[INFO] [stdout] 5273 | /          for (argument_index, adjusted_argument_index, argument, argument_types) in
[INFO] [stdout] 5274 | |              self.enumerate_argument_types()
[INFO] [stdout]      | |              -------------------------------
[INFO] [stdout]      | |              |
[INFO] [stdout]      | |              immutable borrow occurs here
[INFO] [stdout]      | |              immutable borrow later used here
[INFO] [stdout] 5275 | |          {
[INFO] [stdout] 5276 | |              let matched_parameters = &self.argument_matches[argument_index].parameters;
[INFO] [stdout] ...    |
[INFO] [stdout] 5286 | |                  Argument::Variadic => self.check_variadic_argument_type(
[INFO] [stdout]      | | _______________________________________^
[INFO] [stdout] 5287 | ||                     constraints,
[INFO] [stdout] 5288 | ||                     argument_index,
[INFO] [stdout] 5289 | ||                     adjusted_argument_index,
[INFO] [stdout] 5290 | ||                     argument,
[INFO] [stdout] 5291 | ||                     paramspec_component_start,
[INFO] [stdout] 5292 | ||                 ),
[INFO] [stdout]      | ||_________________^ mutable borrow occurs here
[INFO] [stdout] ...    |
[INFO] [stdout] 5324 | |          }
[INFO] [stdout]      | |__________- this for loop borrows `*self` immutably, preventing mutation within its body
[INFO] [stdout]      |
[INFO] [stdout]      = help: consider using an index-based loop instead, or collecting modifications into a separate collection
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0502]: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/ty_python_semantic-0.0.2/src/types/call/bind.rs:5293:39
[INFO] [stdout]      |
[INFO] [stdout] 5273 | /          for (argument_index, adjusted_argument_index, argument, argument_types) in
[INFO] [stdout] 5274 | |              self.enumerate_argument_types()
[INFO] [stdout]      | |              -------------------------------
[INFO] [stdout]      | |              |
[INFO] [stdout]      | |              immutable borrow occurs here
[INFO] [stdout]      | |              immutable borrow later used here
[INFO] [stdout] 5275 | |          {
[INFO] [stdout] 5276 | |              let matched_parameters = &self.argument_matches[argument_index].parameters;
[INFO] [stdout] ...    |
[INFO] [stdout] 5293 | |                  Argument::Keywords => self.check_keyword_variadic_argument_type(
[INFO] [stdout]      | | _______________________________________^
[INFO] [stdout] 5294 | ||                     constraints,
[INFO] [stdout] 5295 | ||                     argument_index,
[INFO] [stdout] 5296 | ||                     adjusted_argument_index,
[INFO] [stdout] ...    ||
[INFO] [stdout] 5299 | ||                     paramspec_component_start,
[INFO] [stdout] 5300 | ||                 ),
[INFO] [stdout]      | ||_________________^ mutable borrow occurs here
[INFO] [stdout] ...    |
[INFO] [stdout] 5324 | |          }
[INFO] [stdout]      | |__________- this for loop borrows `*self` immutably, preventing mutation within its body
[INFO] [stdout]      |
[INFO] [stdout]      = help: consider using an index-based loop instead, or collecting modifications into a separate collection
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0502]: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/ty_python_semantic-0.0.2/src/types/call/bind.rs:5313:25
[INFO] [stdout]      |
[INFO] [stdout] 5273 | /          for (argument_index, adjusted_argument_index, argument, argument_types) in
[INFO] [stdout] 5274 | |              self.enumerate_argument_types()
[INFO] [stdout]      | |              -------------------------------
[INFO] [stdout]      | |              |
[INFO] [stdout]      | |              immutable borrow occurs here
[INFO] [stdout]      | |              immutable borrow later used here
[INFO] [stdout] 5275 | |          {
[INFO] [stdout] 5276 | |              let matched_parameters = &self.argument_matches[argument_index].parameters;
[INFO] [stdout] ...    |
[INFO] [stdout] 5313 | |/                         self.check_argument_type(
[INFO] [stdout] 5314 | ||                             constraints,
[INFO] [stdout] 5315 | ||                             argument_index,
[INFO] [stdout] 5316 | ||                             adjusted_argument_index,
[INFO] [stdout] ...    ||
[INFO] [stdout] 5319 | ||                             matched_parameter,
[INFO] [stdout] 5320 | ||                         );
[INFO] [stdout]      | ||_________________________^ mutable borrow occurs here
[INFO] [stdout] ...    |
[INFO] [stdout] 5324 | |          }
[INFO] [stdout]      | |__________- this for loop borrows `*self` immutably, preventing mutation within its body
[INFO] [stdout]      |
[INFO] [stdout]      = help: consider using an index-based loop instead, or collecting modifications into a separate collection
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0502`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ty_python_semantic` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "4dd2738a0be82b5ef5e240f5fcda8ed76a8a15fd9721987022d587408afcc3a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4dd2738a0be82b5ef5e240f5fcda8ed76a8a15fd9721987022d587408afcc3a5", kill_on_drop: false }`
[INFO] [stdout] 4dd2738a0be82b5ef5e240f5fcda8ed76a8a15fd9721987022d587408afcc3a5
