[INFO] cloning repository https://github.com/Sach97/dagr
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Sach97/dagr" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSach97%2Fdagr", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSach97%2Fdagr'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e11815cc75e80648fb382a6a18fff7a4d42c34d5
[INFO] checking Sach97/dagr against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSach97%2Fdagr" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Sach97/dagr on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Sach97/dagr
[INFO] finished tweaking git repo https://github.com/Sach97/dagr
[INFO] tweaked toml for git repo https://github.com/Sach97/dagr written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/Sach97/dagr already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b841636de42c75394a02fb083dcbb05229a44b6c5c3d90aa972b15265df1a99c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b841636de42c75394a02fb083dcbb05229a44b6c5c3d90aa972b15265df1a99c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b841636de42c75394a02fb083dcbb05229a44b6c5c3d90aa972b15265df1a99c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b841636de42c75394a02fb083dcbb05229a44b6c5c3d90aa972b15265df1a99c", kill_on_drop: false }`
[INFO] [stdout] b841636de42c75394a02fb083dcbb05229a44b6c5c3d90aa972b15265df1a99c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 32557a49996d779932c2978abeba77c2b304fbf4a78e7e9207c7af415cd9bb99
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "32557a49996d779932c2978abeba77c2b304fbf4a78e7e9207c7af415cd9bb99", kill_on_drop: false }`
[INFO] [stderr]     Checking fixedbitset v0.1.9
[INFO] [stderr]     Checking ordermap v0.3.5
[INFO] [stderr]     Checking petgraph v0.4.13
[INFO] [stderr]     Checking daggy v0.6.0 (https://github.com/mitchmindtree/daggy?branch=master#bcb36c7b)
[INFO] [stderr]     Checking dagr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `EdgeRef`, `IntoEdgeReferences`, `IntoEdges`
[INFO] [stdout]  --> src/lib.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     EdgeRef, IntoEdgeReferences, IntoEdges, IntoNodeReferences, NodeIndexable,
[INFO] [stdout]   |     ^^^^^^^  ^^^^^^^^^^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `EdgeIndex`, `Parents`
[INFO] [stdout]  --> src/lib.rs:4:24
[INFO] [stdout]   |
[INFO] [stdout] 4 | use daggy::stabledag::{EdgeIndex, NodeIndex, Parents, StableDag, Walker};
[INFO] [stdout]   |                        ^^^^^^^^^             ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `child3`
[INFO] [stdout]    --> src/lib.rs:104:13
[INFO] [stdout]     |
[INFO] [stdout] 104 |         let child3 = child_walker.walk_next(&self.dag).map(|(e, _)| e).unwrap();
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_child3`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `EdgeRef`, `IntoEdgeReferences`, `IntoEdges`
[INFO] [stdout]  --> src/lib.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     EdgeRef, IntoEdgeReferences, IntoEdges, IntoNodeReferences, NodeIndexable,
[INFO] [stdout]   |     ^^^^^^^  ^^^^^^^^^^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `EdgeIndex`, `Parents`
[INFO] [stdout]  --> src/lib.rs:4:24
[INFO] [stdout]   |
[INFO] [stdout] 4 | use daggy::stabledag::{EdgeIndex, NodeIndex, Parents, StableDag, Walker};
[INFO] [stdout]   |                        ^^^^^^^^^             ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/lib.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 | /         self.dag.add_edge(
[INFO] [stdout] 72 | |             NodeIndex::new(idx1),
[INFO] [stdout] 73 | |             NodeIndex::new(idx2),
[INFO] [stdout] 74 | |             relationship.to_owned(),
[INFO] [stdout] 75 | |         );
[INFO] [stdout]    | |__________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `child3`
[INFO] [stdout]    --> src/lib.rs:104:13
[INFO] [stdout]     |
[INFO] [stdout] 104 |         let child3 = child_walker.walk_next(&self.dag).map(|(e, _)| e).unwrap();
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_child3`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/lib.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 | /         self.dag.add_edge(
[INFO] [stdout] 72 | |             NodeIndex::new(idx1),
[INFO] [stdout] 73 | |             NodeIndex::new(idx2),
[INFO] [stdout] 74 | |             relationship.to_owned(),
[INFO] [stdout] 75 | |         );
[INFO] [stdout]    | |__________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.41s
[INFO] running `Command { std: "docker" "inspect" "32557a49996d779932c2978abeba77c2b304fbf4a78e7e9207c7af415cd9bb99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32557a49996d779932c2978abeba77c2b304fbf4a78e7e9207c7af415cd9bb99", kill_on_drop: false }`
[INFO] [stdout] 32557a49996d779932c2978abeba77c2b304fbf4a78e7e9207c7af415cd9bb99