[INFO] fetching crate best-path 0.1.1...
[INFO] checking best-path-0.1.1 against master#80399064afa4a2cd153f30d02c25f7ea0383ed65 for opaque-soundness-fix
[INFO] extracting crate best-path 0.1.1 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate best-path 0.1.1 on toolchain 80399064afa4a2cd153f30d02c25f7ea0383ed65
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate best-path 0.1.1
[INFO] finished tweaking crates.io crate best-path 0.1.1
[INFO] tweaked toml for crates.io crate best-path 0.1.1 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5777b4e3abaafe6308a6c97c961b31d1f1636c24c76409734c3b5b69cb4d87d6
[INFO] running `Command { std: "docker" "start" "-a" "5777b4e3abaafe6308a6c97c961b31d1f1636c24c76409734c3b5b69cb4d87d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5777b4e3abaafe6308a6c97c961b31d1f1636c24c76409734c3b5b69cb4d87d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5777b4e3abaafe6308a6c97c961b31d1f1636c24c76409734c3b5b69cb4d87d6", kill_on_drop: false }`
[INFO] [stdout] 5777b4e3abaafe6308a6c97c961b31d1f1636c24c76409734c3b5b69cb4d87d6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 69d0b791ffc9898c0ac6edf60582983282e25bbc82466960abdf4f287f2b9877
[INFO] running `Command { std: "docker" "start" "-a" "69d0b791ffc9898c0ac6edf60582983282e25bbc82466960abdf4f287f2b9877", kill_on_drop: false }`
[INFO] [stderr]    Compiling toml_datetime v0.6.3
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling libm v0.2.8
[INFO] [stderr]     Checking byte-slice-cast v1.2.2
[INFO] [stderr]     Checking arrayvec v0.7.4
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling toml_edit v0.20.2
[INFO] [stderr]    Compiling toml_edit v0.19.15
[INFO] [stderr]    Compiling proc-macro-crate v1.3.1
[INFO] [stderr]    Compiling proc-macro-crate v2.0.2
[INFO] [stderr]    Compiling impl-trait-for-tuples v0.2.2
[INFO] [stderr]    Compiling parity-scale-codec-derive v3.6.9
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]    Compiling scale-info-derive v2.11.0
[INFO] [stderr]     Checking parity-scale-codec v3.6.9
[INFO] [stderr]     Checking scale-info v2.11.0
[INFO] [stderr]     Checking best-path v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `BTreeMap` is imported redundantly
[INFO] [stdout]   --> src/best_path_calculator/floyd_warshall/calculator.rs:13:24
[INFO] [stdout]    |
[INFO] [stdout] 11 | use crate::*;
[INFO] [stdout]    |     -------- the item `BTreeMap` is already imported here
[INFO] [stdout] 12 | #[cfg(feature = "std")]
[INFO] [stdout] 13 | use std::collections::{BTreeMap, BTreeSet};
[INFO] [stdout]    |                        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `BTreeMap` is imported redundantly
[INFO] [stdout]   --> src/best_path_calculator/floyd_warshall/calculator.rs:13:24
[INFO] [stdout]    |
[INFO] [stdout] 11 | use crate::*;
[INFO] [stdout]    |     -------- the item `BTreeMap` is already imported here
[INFO] [stdout] 12 | #[cfg(feature = "std")]
[INFO] [stdout] 13 | use std::collections::{BTreeMap, BTreeSet};
[INFO] [stdout]    |                        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.20s
[INFO] running `Command { std: "docker" "inspect" "69d0b791ffc9898c0ac6edf60582983282e25bbc82466960abdf4f287f2b9877", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69d0b791ffc9898c0ac6edf60582983282e25bbc82466960abdf4f287f2b9877", kill_on_drop: false }`
[INFO] [stdout] 69d0b791ffc9898c0ac6edf60582983282e25bbc82466960abdf4f287f2b9877
