[INFO] fetching crate rugraph 1.2.1...
[INFO] checking rugraph-1.2.1 against try#024378d9203a4009ed73d6db2681b88a8d74ce7a for pr-112160
[INFO] extracting crate rugraph 1.2.1 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate rugraph 1.2.1 on toolchain 024378d9203a4009ed73d6db2681b88a8d74ce7a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+024378d9203a4009ed73d6db2681b88a8d74ce7a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rugraph 1.2.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate rugraph 1.2.1
[INFO] tweaked toml for crates.io crate rugraph 1.2.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate crates.io crate rugraph 1.2.1 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" "+024378d9203a4009ed73d6db2681b88a8d74ce7a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+024378d9203a4009ed73d6db2681b88a8d74ce7a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0acf44776e195045a67bc2c6f5c71b16a89e1d25ee5a328b7782caa3ea5a7edb
[INFO] running `Command { std: "docker" "start" "-a" "0acf44776e195045a67bc2c6f5c71b16a89e1d25ee5a328b7782caa3ea5a7edb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0acf44776e195045a67bc2c6f5c71b16a89e1d25ee5a328b7782caa3ea5a7edb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0acf44776e195045a67bc2c6f5c71b16a89e1d25ee5a328b7782caa3ea5a7edb", kill_on_drop: false }`
[INFO] [stdout] 0acf44776e195045a67bc2c6f5c71b16a89e1d25ee5a328b7782caa3ea5a7edb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+024378d9203a4009ed73d6db2681b88a8d74ce7a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3e646a4c89eb83b4308feadd23d3254b0bda4661be4b945febd96d04dd69f67e
[INFO] running `Command { std: "docker" "start" "-a" "3e646a4c89eb83b4308feadd23d3254b0bda4661be4b945febd96d04dd69f67e", kill_on_drop: false }`
[INFO] [stderr]     Checking rugraph v1.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/digraph.rs:192:46
[INFO] [stdout]     |
[INFO] [stdout] 192 |         let s = self.to_dot_string(graph_name.borrow());
[INFO] [stdout]     |                                              ^^^^^^^^^ unnecessary method call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `String` does not implement `Borrow`, so calling `borrow` on `&String` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[deny(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/multidigraph.rs:248:46
[INFO] [stdout]     |
[INFO] [stdout] 248 |         let s = self.to_dot_string(graph_name.borrow());
[INFO] [stdout]     |                                              ^^^^^^^^^ unnecessary method call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `String` does not implement `Borrow`, so calling `borrow` on `&String` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/multidigraph.rs:340:32
[INFO] [stdout]     |
[INFO] [stdout] 340 |             n_from = v_nodes[0].clone().trim().to_string();
[INFO] [stdout]     |                                ^^^^^^^^ unnecessary method call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/multidigraph.rs:341:30
[INFO] [stdout]     |
[INFO] [stdout] 341 |             n_to = v_nodes[1].clone().trim().to_string();
[INFO] [stdout]     |                              ^^^^^^^^ unnecessary method call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rugraph` (lib) due to 5 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/digraph.rs:192:46
[INFO] [stdout]     |
[INFO] [stdout] 192 |         let s = self.to_dot_string(graph_name.borrow());
[INFO] [stdout]     |                                              ^^^^^^^^^ unnecessary method call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `String` does not implement `Borrow`, so calling `borrow` on `&String` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[deny(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/multidigraph.rs:248:46
[INFO] [stdout]     |
[INFO] [stdout] 248 |         let s = self.to_dot_string(graph_name.borrow());
[INFO] [stdout]     |                                              ^^^^^^^^^ unnecessary method call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `String` does not implement `Borrow`, so calling `borrow` on `&String` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/multidigraph.rs:340:32
[INFO] [stdout]     |
[INFO] [stdout] 340 |             n_from = v_nodes[0].clone().trim().to_string();
[INFO] [stdout]     |                                ^^^^^^^^ unnecessary method call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/multidigraph.rs:341:30
[INFO] [stdout]     |
[INFO] [stdout] 341 |             n_to = v_nodes[1].clone().trim().to_string();
[INFO] [stdout]     |                              ^^^^^^^^ unnecessary method call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rugraph` (lib test) due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "3e646a4c89eb83b4308feadd23d3254b0bda4661be4b945febd96d04dd69f67e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e646a4c89eb83b4308feadd23d3254b0bda4661be4b945febd96d04dd69f67e", kill_on_drop: false }`
[INFO] [stdout] 3e646a4c89eb83b4308feadd23d3254b0bda4661be4b945febd96d04dd69f67e