[INFO] fetching crate maze_rs 1.0.0...
[INFO] testing maze_rs-1.0.0 against try#b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b for pr-145330-1
[INFO] extracting crate maze_rs 1.0.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate maze_rs 1.0.0
[INFO] finished tweaking crates.io crate maze_rs 1.0.0
[INFO] tweaked toml for crates.io crate maze_rs 1.0.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate maze_rs 1.0.0 on toolchain b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate maze_rs 1.0.0 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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fe04b91eebcbcca7762bcffee4d63294faa2eeb3ed8bc9c971bc3bdd94c285b6
[INFO] running `Command { std: "docker" "start" "-a" "fe04b91eebcbcca7762bcffee4d63294faa2eeb3ed8bc9c971bc3bdd94c285b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fe04b91eebcbcca7762bcffee4d63294faa2eeb3ed8bc9c971bc3bdd94c285b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe04b91eebcbcca7762bcffee4d63294faa2eeb3ed8bc9c971bc3bdd94c285b6", kill_on_drop: false }`
[INFO] [stdout] fe04b91eebcbcca7762bcffee4d63294faa2eeb3ed8bc9c971bc3bdd94c285b6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 546952724ce3aea48673304a7903d65e250b239d8b7d818cdfde966e14cff961
[INFO] running `Command { std: "docker" "start" "-a" "546952724ce3aea48673304a7903d65e250b239d8b7d818cdfde966e14cff961", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling maze_rs v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `kind` is never read
[INFO] [stdout]   --> src/error/mod.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 59 | struct Custom {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 60 |     kind: ErrorKind,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Custom` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `v` is never read
[INFO] [stdout]    --> src/ds/graphs.rs:164:5
[INFO] [stdout]     |
[INFO] [stdout] 162 | struct Vertex {
[INFO] [stdout]     |        ------ field in this struct
[INFO] [stdout] 163 |     // the id of this vertex
[INFO] [stdout] 164 |     v: usize,
[INFO] [stdout]     |     ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Vertex` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.17s
[INFO] running `Command { std: "docker" "inspect" "546952724ce3aea48673304a7903d65e250b239d8b7d818cdfde966e14cff961", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "546952724ce3aea48673304a7903d65e250b239d8b7d818cdfde966e14cff961", kill_on_drop: false }`
[INFO] [stdout] 546952724ce3aea48673304a7903d65e250b239d8b7d818cdfde966e14cff961
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d6d55620158e505b4eedb93d738d35cf7dba597ffdd9cefd912f48cfabac2db7
[INFO] running `Command { std: "docker" "start" "-a" "d6d55620158e505b4eedb93d738d35cf7dba597ffdd9cefd912f48cfabac2db7", kill_on_drop: false }`
[INFO] [stderr]    Compiling maze_rs v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `kind` is never read
[INFO] [stdout]   --> src/error/mod.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 59 | struct Custom {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 60 |     kind: ErrorKind,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Custom` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `v` is never read
[INFO] [stdout]    --> src/ds/graphs.rs:164:5
[INFO] [stdout]     |
[INFO] [stdout] 162 | struct Vertex {
[INFO] [stdout]     |        ------ field in this struct
[INFO] [stdout] 163 |     // the id of this vertex
[INFO] [stdout] 164 |     v: usize,
[INFO] [stdout]     |     ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Vertex` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `ds`
[INFO] [stdout]   --> src/helper/mod.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |     use ds::Point;
[INFO] [stdout]    |         ^^ help: a similar path exists: `crate::ds`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `use` statements changed in Rust 2018; read more at <https://doc.rust-lang.org/edition-guide/rust-2018/module-system/path-clarity.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `maze_rs` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "d6d55620158e505b4eedb93d738d35cf7dba597ffdd9cefd912f48cfabac2db7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6d55620158e505b4eedb93d738d35cf7dba597ffdd9cefd912f48cfabac2db7", kill_on_drop: false }`
[INFO] [stdout] d6d55620158e505b4eedb93d738d35cf7dba597ffdd9cefd912f48cfabac2db7