[INFO] cloning repository https://github.com/jec/exercism-rust-dot-dsl
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jec/exercism-rust-dot-dsl" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjec%2Fexercism-rust-dot-dsl", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjec%2Fexercism-rust-dot-dsl'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 08b3807c582a0bf5ab377c045f893f1eed3732ec
[INFO] building jec/exercism-rust-dot-dsl against master#ad211ced81509462cdfe4c29ed10f97279a0acae for pr-135216
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjec%2Fexercism-rust-dot-dsl" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jec/exercism-rust-dot-dsl on toolchain ad211ced81509462cdfe4c29ed10f97279a0acae
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jec/exercism-rust-dot-dsl
[INFO] finished tweaking git repo https://github.com/jec/exercism-rust-dot-dsl
[INFO] tweaked toml for git repo https://github.com/jec/exercism-rust-dot-dsl written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/jec/exercism-rust-dot-dsl 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" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c03013a6709b460e535d737e41cdc7129dd9f878fbba6427eab5c96d0bafd284
[INFO] running `Command { std: "docker" "start" "-a" "c03013a6709b460e535d737e41cdc7129dd9f878fbba6427eab5c96d0bafd284", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c03013a6709b460e535d737e41cdc7129dd9f878fbba6427eab5c96d0bafd284", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c03013a6709b460e535d737e41cdc7129dd9f878fbba6427eab5c96d0bafd284", kill_on_drop: false }`
[INFO] [stdout] c03013a6709b460e535d737e41cdc7129dd9f878fbba6427eab5c96d0bafd284
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0049f26ad5d5154cb9ab8262fb16e072e4757305fc4c6b793b772d1c0c1719ee
[INFO] running `Command { std: "docker" "start" "-a" "0049f26ad5d5154cb9ab8262fb16e072e4757305fc4c6b793b772d1c0c1719ee", kill_on_drop: false }`
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling dot-dsl v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `nodes`
[INFO] [stdout]   --> src/lib.rs:24:37
[INFO] [stdout]    |
[INFO] [stdout] 24 |         pub fn with_nodes(mut self, nodes: Vec<Node>) -> Self {
[INFO] [stdout]    |                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_nodes`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:24:27
[INFO] [stdout]    |
[INFO] [stdout] 24 |         pub fn with_nodes(mut self, nodes: Vec<Node>) -> Self {
[INFO] [stdout]    |                           ----^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.21s
[INFO] running `Command { std: "docker" "inspect" "0049f26ad5d5154cb9ab8262fb16e072e4757305fc4c6b793b772d1c0c1719ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0049f26ad5d5154cb9ab8262fb16e072e4757305fc4c6b793b772d1c0c1719ee", kill_on_drop: false }`
[INFO] [stdout] 0049f26ad5d5154cb9ab8262fb16e072e4757305fc4c6b793b772d1c0c1719ee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d5c8886a005e199c8406b86a4416b63620c72bc1381fe254f9917340abf1776f
[INFO] running `Command { std: "docker" "start" "-a" "d5c8886a005e199c8406b86a4416b63620c72bc1381fe254f9917340abf1776f", kill_on_drop: false }`
[INFO] [stdout] warning: unused variable: `nodes`
[INFO] [stdout]   --> src/lib.rs:24:37
[INFO] [stdout]    |
[INFO] [stdout] 24 |         pub fn with_nodes(mut self, nodes: Vec<Node>) -> Self {
[INFO] [stdout]    |                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_nodes`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling dot-dsl v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:24:27
[INFO] [stdout]    |
[INFO] [stdout] 24 |         pub fn with_nodes(mut self, nodes: Vec<Node>) -> Self {
[INFO] [stdout]    |                           ----^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `dot_dsl::graph::graph_items::edge::Edge`
[INFO] [stdout]  --> tests/dot-dsl.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use dot_dsl::graph::graph_items::edge::Edge;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `dot_dsl::graph::graph_items::node::Node`
[INFO] [stdout]  --> tests/dot-dsl.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use dot_dsl::graph::graph_items::node::Node;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `maplit::hashmap`
[INFO] [stdout]  --> tests/dot-dsl.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use maplit::hashmap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nodes`
[INFO] [stdout]   --> src/lib.rs:24:37
[INFO] [stdout]    |
[INFO] [stdout] 24 |         pub fn with_nodes(mut self, nodes: Vec<Node>) -> Self {
[INFO] [stdout]    |                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_nodes`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:24:27
[INFO] [stdout]    |
[INFO] [stdout] 24 |         pub fn with_nodes(mut self, nodes: Vec<Node>) -> Self {
[INFO] [stdout]    |                           ----^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `Command { std: "docker" "inspect" "d5c8886a005e199c8406b86a4416b63620c72bc1381fe254f9917340abf1776f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5c8886a005e199c8406b86a4416b63620c72bc1381fe254f9917340abf1776f", kill_on_drop: false }`
[INFO] [stdout] d5c8886a005e199c8406b86a4416b63620c72bc1381fe254f9917340abf1776f