[INFO] cloning repository https://github.com/LLayta/tree-to-dot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LLayta/tree-to-dot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLLayta%2Ftree-to-dot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLLayta%2Ftree-to-dot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 743613b73af15851abc0f600586ee939b7e788bb
[INFO] checking LLayta/tree-to-dot against master#4d1bd0db7f489b22c6d8aa2385937a95412c015b for pr-114682
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLLayta%2Ftree-to-dot" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LLayta/tree-to-dot on toolchain 4d1bd0db7f489b22c6d8aa2385937a95412c015b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/LLayta/tree-to-dot
[INFO] finished tweaking git repo https://github.com/LLayta/tree-to-dot
[INFO] tweaked toml for git repo https://github.com/LLayta/tree-to-dot written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/LLayta/tree-to-dot 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" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking LLayta/tree-to-dot against try#785364c7e5e0804473a3fddfb579798ea14e3493 for pr-114682
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLLayta%2Ftree-to-dot" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LLayta/tree-to-dot on toolchain 785364c7e5e0804473a3fddfb579798ea14e3493
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+785364c7e5e0804473a3fddfb579798ea14e3493" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/LLayta/tree-to-dot
[INFO] finished tweaking git repo https://github.com/LLayta/tree-to-dot
[INFO] tweaked toml for git repo https://github.com/LLayta/tree-to-dot written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/LLayta/tree-to-dot 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" "+785364c7e5e0804473a3fddfb579798ea14e3493" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking LLayta/tree-to-dot against try#785364c7e5e0804473a3fddfb579798ea14e3493 for pr-114682
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLLayta%2Ftree-to-dot" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LLayta/tree-to-dot on toolchain 785364c7e5e0804473a3fddfb579798ea14e3493
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+785364c7e5e0804473a3fddfb579798ea14e3493" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/LLayta/tree-to-dot
[INFO] finished tweaking git repo https://github.com/LLayta/tree-to-dot
[INFO] tweaked toml for git repo https://github.com/LLayta/tree-to-dot written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/LLayta/tree-to-dot 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" "+785364c7e5e0804473a3fddfb579798ea14e3493" "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-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+785364c7e5e0804473a3fddfb579798ea14e3493" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3494a50f6c2fdeb377327cc080a5ac0d0abd5735f4e43fefd15796871f7f3e4b
[INFO] running `Command { std: "docker" "start" "-a" "3494a50f6c2fdeb377327cc080a5ac0d0abd5735f4e43fefd15796871f7f3e4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3494a50f6c2fdeb377327cc080a5ac0d0abd5735f4e43fefd15796871f7f3e4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3494a50f6c2fdeb377327cc080a5ac0d0abd5735f4e43fefd15796871f7f3e4b", kill_on_drop: false }`
[INFO] [stdout] 3494a50f6c2fdeb377327cc080a5ac0d0abd5735f4e43fefd15796871f7f3e4b
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+785364c7e5e0804473a3fddfb579798ea14e3493" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3ba40ba9854c166edc86506f1ff1e1261126eb6c7eb450e847b7d306a6ec6ec7
[INFO] running `Command { std: "docker" "start" "-a" "3ba40ba9854c166edc86506f1ff1e1261126eb6c7eb450e847b7d306a6ec6ec7", kill_on_drop: false }`
[INFO] [stderr]     Checking hashbrown v0.14.0
[INFO] [stderr]     Checking equivalent v1.0.1
[INFO] [stderr]     Checking fixedbitset v0.4.2
[INFO] [stderr]     Checking indexmap v2.0.0
[INFO] [stderr]     Checking petgraph v0.6.4
[INFO] [stderr]     Checking dot_testing v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `value`, `left`, and `right` are never read
[INFO] [stdout]   --> src/lib.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct Node<T>
[INFO] [stdout]    |        ---- fields in this struct
[INFO] [stdout] 14 | where T: Ord + ToString {
[INFO] [stdout] 15 |     value: T,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 16 |     left:  Option<Box<Node<T>>>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 17 |     right: Option<Box<Node<T>>>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Node` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/lib.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | / impl<T> Node<T> 
[INFO] [stdout] 21 | | where T: Ord + ToString {
[INFO] [stdout]    | |_______________________- associated function in this implementation
[INFO] [stdout] 22 |       fn new(value: T) -> Self {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `root` is never read
[INFO] [stdout]   --> src/lib.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | struct Tree<T> 
[INFO] [stdout]    |        ---- field in this struct
[INFO] [stdout] 33 | where T: Ord + ToString {
[INFO] [stdout] 34 |     root: Option<Box<Node<T>>>
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Tree` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `insert`, `insert_helper`, `generate_dot_graph`, and `write_dot_file` are never used
[INFO] [stdout]    --> src/lib.rs:39:8
[INFO] [stdout]     |
[INFO] [stdout] 37  | / impl<T> Tree<T> 
[INFO] [stdout] 38  | | where T: Ord + ToString {
[INFO] [stdout]     | |_______________________- associated items in this implementation
[INFO] [stdout] 39  |       fn new() -> Self {
[INFO] [stdout]     |          ^^^
[INFO] [stdout] ...
[INFO] [stdout] 43  |       fn insert(mut self, value: T) -> Self {
[INFO] [stdout]     |          ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 57  |       fn insert_helper(node: &mut Node<T>, value: T) {
[INFO] [stdout]     |          ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 83  |       fn generate_dot_graph(
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 115 |       fn write_dot_file(&self) {
[INFO] [stdout]     |          ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `value`, `left`, and `right` are never read
[INFO] [stdout]   --> src/lib.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct Node<T>
[INFO] [stdout]    |        ---- fields in this struct
[INFO] [stdout] 14 | where T: Ord + ToString {
[INFO] [stdout] 15 |     value: T,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 16 |     left:  Option<Box<Node<T>>>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 17 |     right: Option<Box<Node<T>>>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Node` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/lib.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | / impl<T> Node<T> 
[INFO] [stdout] 21 | | where T: Ord + ToString {
[INFO] [stdout]    | |_______________________- associated function in this implementation
[INFO] [stdout] 22 |       fn new(value: T) -> Self {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `root` is never read
[INFO] [stdout]   --> src/lib.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | struct Tree<T> 
[INFO] [stdout]    |        ---- field in this struct
[INFO] [stdout] 33 | where T: Ord + ToString {
[INFO] [stdout] 34 |     root: Option<Box<Node<T>>>
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Tree` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `insert`, `insert_helper`, `generate_dot_graph`, and `write_dot_file` are never used
[INFO] [stdout]    --> src/lib.rs:39:8
[INFO] [stdout]     |
[INFO] [stdout] 37  | / impl<T> Tree<T> 
[INFO] [stdout] 38  | | where T: Ord + ToString {
[INFO] [stdout]     | |_______________________- associated items in this implementation
[INFO] [stdout] 39  |       fn new() -> Self {
[INFO] [stdout]     |          ^^^
[INFO] [stdout] ...
[INFO] [stdout] 43  |       fn insert(mut self, value: T) -> Self {
[INFO] [stdout]     |          ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 57  |       fn insert_helper(node: &mut Node<T>, value: T) {
[INFO] [stdout]     |          ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 83  |       fn generate_dot_graph(
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 115 |       fn write_dot_file(&self) {
[INFO] [stdout]     |          ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.84s
[INFO] running `Command { std: "docker" "inspect" "3ba40ba9854c166edc86506f1ff1e1261126eb6c7eb450e847b7d306a6ec6ec7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ba40ba9854c166edc86506f1ff1e1261126eb6c7eb450e847b7d306a6ec6ec7", kill_on_drop: false }`
[INFO] [stdout] 3ba40ba9854c166edc86506f1ff1e1261126eb6c7eb450e847b7d306a6ec6ec7
