[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 [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>>, [INFO] [stdout] | ^^^^ [INFO] [stdout] 17 | right: Option>>, [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 Node [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 [INFO] [stdout] | ---- field in this struct [INFO] [stdout] 33 | where T: Ord + ToString { [INFO] [stdout] 34 | root: Option>> [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 Tree [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, 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 [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>>, [INFO] [stdout] | ^^^^ [INFO] [stdout] 17 | right: Option>>, [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 Node [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 [INFO] [stdout] | ---- field in this struct [INFO] [stdout] 33 | where T: Ord + ToString { [INFO] [stdout] 34 | root: Option>> [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 Tree [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, 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