[INFO] fetching crate flag-algebra 0.2.1...
[INFO] checking flag-algebra-0.2.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate flag-algebra 0.2.1 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate flag-algebra 0.2.1 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "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-0-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] [stderr]     Checking ndarray-linalg v0.16.0
[INFO] [stderr]     Checking flag-algebra v0.2.1 (/opt/rustwide/workdir)
[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/385fa9d845dd326c6bbfd58c22244215e431948a/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/385fa9d845dd326c6bbfd58c22244215e431948a/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/385fa9d845dd326c6bbfd58c22244215e431948a/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/385fa9d845dd326c6bbfd58c22244215e431948a/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/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: 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: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning 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 28.61s
[INFO] running `Command { std: "docker" "inspect" "a0b9d386ec210aab606d5679a8bf2a9c4a945a8f6f2d1217185b7fe6cd01ba0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0b9d386ec210aab606d5679a8bf2a9c4a945a8f6f2d1217185b7fe6cd01ba0e", kill_on_drop: false }`
[INFO] [stdout] a0b9d386ec210aab606d5679a8bf2a9c4a945a8f6f2d1217185b7fe6cd01ba0e
[INFO] checking flag-algebra-0.2.1 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate flag-algebra 0.2.1 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate flag-algebra 0.2.1 on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "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-0-tc2/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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e93a4cf5c543c796cd05e5c62627337b57bad28377ebfd772976a1eb29a6fd70
[INFO] running `Command { std: "docker" "start" "-a" "e93a4cf5c543c796cd05e5c62627337b57bad28377ebfd772976a1eb29a6fd70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e93a4cf5c543c796cd05e5c62627337b57bad28377ebfd772976a1eb29a6fd70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e93a4cf5c543c796cd05e5c62627337b57bad28377ebfd772976a1eb29a6fd70", kill_on_drop: false }`
[INFO] [stdout] e93a4cf5c543c796cd05e5c62627337b57bad28377ebfd772976a1eb29a6fd70
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a0731fbc0b615ea564bcd119c69830f7cd82a66e919f5e7c78dc1449a85f25f0
[INFO] running `Command { std: "docker" "start" "-a" "a0731fbc0b615ea564bcd119c69830f7cd82a66e919f5e7c78dc1449a85f25f0", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.60
[INFO] [stderr]    Compiling quote v1.0.28
[INFO] [stderr]    Compiling unicode-ident v1.0.9
[INFO] [stderr]    Compiling libc v0.2.146
[INFO] [stderr]    Compiling libm v0.2.7
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling serde v1.0.164
[INFO] [stderr]    Compiling cc v1.0.79
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling memoffset v0.9.0
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.15
[INFO] [stderr]     Checking itoa v1.0.6
[INFO] [stderr]    Compiling cmake v0.1.50
[INFO] [stderr]    Compiling syn v2.0.18
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]    Compiling matrixmultiply v0.3.7
[INFO] [stderr]     Checking rand_core v0.6.4
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[INFO] [stderr]    Compiling rayon-core v1.11.0
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[INFO] [stderr]    Compiling serde_json v1.0.96
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[INFO] [stderr]    Compiling serde_derive v1.0.164
[INFO] [stderr]    Compiling thiserror-impl v1.0.40
[INFO] [stderr]     Checking addr2line v0.19.0
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[INFO] [stderr]     Checking plotters-backend v0.3.4
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[INFO] [stderr]     Checking flag-algebra v0.2.1 (/opt/rustwide/workdir)
[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/645bb72776a6a56a1a8f52631a44bd082b2ba509/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/645bb72776a6a56a1a8f52631a44bd082b2ba509/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/645bb72776a6a56a1a8f52631a44bd082b2ba509/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/645bb72776a6a56a1a8f52631a44bd082b2ba509/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 `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 `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/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 26.94s
[INFO] running `Command { std: "docker" "inspect" "a0731fbc0b615ea564bcd119c69830f7cd82a66e919f5e7c78dc1449a85f25f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0731fbc0b615ea564bcd119c69830f7cd82a66e919f5e7c78dc1449a85f25f0", kill_on_drop: false }`
[INFO] [stdout] a0731fbc0b615ea564bcd119c69830f7cd82a66e919f5e7c78dc1449a85f25f0