[INFO] cloning repository https://github.com/Redstone-Compiler/redstone-compiler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Redstone-Compiler/redstone-compiler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRedstone-Compiler%2Fredstone-compiler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRedstone-Compiler%2Fredstone-compiler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e3ea26095033b6eea47149cf14cf89c6f87ff2c7
[INFO] checking Redstone-Compiler/redstone-compiler/e3ea26095033b6eea47149cf14cf89c6f87ff2c7 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRedstone-Compiler%2Fredstone-compiler" "/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/Redstone-Compiler/redstone-compiler on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Redstone-Compiler/redstone-compiler
[INFO] finished tweaking git repo https://github.com/Redstone-Compiler/redstone-compiler
[INFO] tweaked toml for git repo https://github.com/Redstone-Compiler/redstone-compiler written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Redstone-Compiler/redstone-compiler 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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
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[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "d3afd1a676069ff5bc394a6e2e3ef6bd060f0ee94dac009950af37f8c9481b08", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "rm" "-f" "d3afd1a676069ff5bc394a6e2e3ef6bd060f0ee94dac009950af37f8c9481b08", kill_on_drop: false }`
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[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "da2be512f15ab7b360d8dd308de36fa4220763bb6ed33fef3746fb21e63ffc8d", kill_on_drop: false }`
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[INFO] [stderr]     Checking redstone-compiler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `petgraph::stable_graph::NodeIndex`
[INFO] [stdout]  --> src/transform/placer/mod.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use petgraph::stable_graph::NodeIndex;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `GraphNodeId`
[INFO] [stdout]   --> src/transform/placer/mod.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |         GraphNodeId, GraphNodeKind, SubGraphWithGraph,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `petgraph::stable_graph::NodeIndex`
[INFO] [stdout]  --> src/transform/placer/mod.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use petgraph::stable_graph::NodeIndex;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `GraphNodeId`
[INFO] [stdout]   --> src/transform/placer/mod.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |         GraphNodeId, GraphNodeKind, SubGraphWithGraph,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/graph/mod.rs:185:17
[INFO] [stdout]     |
[INFO] [stdout] 185 |             let mut node = other.nodes.iter_mut().find(|node| node.id == from).unwrap();
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/graph/mod.rs:185:17
[INFO] [stdout]     |
[INFO] [stdout] 185 |             let mut node = other.nodes.iter_mut().find(|node| node.id == from).unwrap();
[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: fields `graph`, `max_width_size`, and `max_height_size` are never read
[INFO] [stdout]   --> src/transform/placer/mod.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub struct LocalPlacer<'a> {
[INFO] [stdout]    |            ----------- fields in this struct
[INFO] [stdout] 41 |     graph: SubGraphWithGraph<'a>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 42 |     try_count: usize,
[INFO] [stdout] 43 |     max_width_size: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 44 |     max_height_size: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `graph`, `max_width_size`, and `max_height_size` are never read
[INFO] [stdout]   --> src/transform/placer/mod.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub struct LocalPlacer<'a> {
[INFO] [stdout]    |            ----------- fields in this struct
[INFO] [stdout] 41 |     graph: SubGraphWithGraph<'a>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 42 |     try_count: usize,
[INFO] [stdout] 43 |     max_width_size: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 44 |     max_height_size: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[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` profile [unoptimized + debuginfo] target(s) in 1m 50s
[INFO] running `Command { std: "docker" "inspect" "da2be512f15ab7b360d8dd308de36fa4220763bb6ed33fef3746fb21e63ffc8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da2be512f15ab7b360d8dd308de36fa4220763bb6ed33fef3746fb21e63ffc8d", kill_on_drop: false }`
[INFO] [stdout] da2be512f15ab7b360d8dd308de36fa4220763bb6ed33fef3746fb21e63ffc8d