[INFO] fetching crate flag-algebra 0.2.1...
[INFO] checking flag-algebra-0.2.1 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate flag-algebra 0.2.1 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate flag-algebra 0.2.1 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate flag-algebra 0.2.1
[INFO] finished tweaking crates.io crate flag-algebra 0.2.1
[INFO] tweaked toml for crates.io crate flag-algebra 0.2.1 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate flag-algebra 0.2.1 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stdout] warning: the item `Result` is imported redundantly
[INFO] [stdout]  --> src/tools/sdpa_problem.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::result::Result;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Result` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Result` is imported redundantly
[INFO] [stdout]  --> src/sdpa.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::result::Result;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Result` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Canonize` is imported redundantly
[INFO] [stdout]    --> src/flags/tool.rs:113:9
[INFO] [stdout]     |
[INFO] [stdout] 111 |     use super::*;
[INFO] [stdout]     |         -------- the item `Canonize` is already imported here
[INFO] [stdout] 112 |     use crate::flags::Graph;
[INFO] [stdout] 113 |     use canonical_form::Canonize;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Result` is imported redundantly
[INFO] [stdout]  --> src/tools/sdpa_problem.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::result::Result;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Result` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Result` is imported redundantly
[INFO] [stdout]  --> src/sdpa.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::result::Result;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Result` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `index_iter` is never used
[INFO] [stdout]   --> src/flags/common.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub trait FlatMatrix: Sized {
[INFO] [stdout]    |           ---------- associated function in this trait
[INFO] [stdout] ...
[INFO] [stdout] 32 |     fn index_iter(n: usize) -> Self::IndexIter;
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `count` is never used
[INFO] [stdout]   --> src/iterators.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub trait StreamingIterator<A>
[INFO] [stdout]    |           ----------------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 25 |     fn count(mut self) -> usize
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Basis` is imported redundantly
[INFO] [stdout]  --> examples/turan.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use flag_algebra::*;
[INFO] [stdout]   |     --------------- the item `Basis` is already imported here
[INFO] [stdout] 2 | use flags::Graph;
[INFO] [stdout] 3 | use operator::Basis;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Problem` is imported redundantly
[INFO] [stdout]  --> examples/c5-free.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use flag_algebra::*;
[INFO] [stdout]   |     --------------- the item `Problem` is already imported here
[INFO] [stdout] 2 | use flags::Graph;
[INFO] [stdout] 3 | use sdp::Problem;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Problem` is imported redundantly
[INFO] [stdout]  --> examples/turan.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use flag_algebra::*;
[INFO] [stdout]   |     --------------- the item `Problem` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 4 | use sdp::Problem;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 26.91s
[INFO] running `Command { std: "docker" "inspect" "ed876f4c07b4dae37ac3f326717ff07e0023f078a3746de228591cac80bf7295", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed876f4c07b4dae37ac3f326717ff07e0023f078a3746de228591cac80bf7295", kill_on_drop: false }`
[INFO] [stdout] ed876f4c07b4dae37ac3f326717ff07e0023f078a3746de228591cac80bf7295