[INFO] fetching crate xapphire 0.1.0...
[INFO] building xapphire-0.1.0 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate xapphire 0.1.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate xapphire 0.1.0
[INFO] finished tweaking crates.io crate xapphire 0.1.0
[INFO] tweaked toml for crates.io crate xapphire 0.1.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate xapphire 0.1.0 on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 12 packages to latest compatible versions
[INFO] [stderr]       Adding ndarray v0.13.1 (available: v0.16.1)
[INFO] [stderr]       Adding num v0.3.1 (available: v0.4.3)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ea2cf9425591187852c25125cf8f7d15b6af954c1ba53dd1d9f4043c65c87616
[INFO] running `Command { std: "docker" "start" "-a" "ea2cf9425591187852c25125cf8f7d15b6af954c1ba53dd1d9f4043c65c87616", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ea2cf9425591187852c25125cf8f7d15b6af954c1ba53dd1d9f4043c65c87616", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea2cf9425591187852c25125cf8f7d15b6af954c1ba53dd1d9f4043c65c87616", kill_on_drop: false }`
[INFO] [stdout] ea2cf9425591187852c25125cf8f7d15b6af954c1ba53dd1d9f4043c65c87616
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a655963ba0f4bdcdc26b2ae7ad6d2864120a169f82e3b18ed551616b6585a713
[INFO] running `Command { std: "docker" "start" "-a" "a655963ba0f4bdcdc26b2ae7ad6d2864120a169f82e3b18ed551616b6585a713", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling num-bigint v0.3.3
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling rawpointer v0.2.1
[INFO] [stderr]    Compiling ndarray v0.13.1
[INFO] [stderr]    Compiling matrixmultiply v0.2.4
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling num-complex v0.3.1
[INFO] [stderr]    Compiling num-iter v0.1.45
[INFO] [stderr]    Compiling num v0.3.1
[INFO] [stderr]    Compiling xapphire v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `num::Float`
[INFO] [stdout]  --> src/cg.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use num::Float;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `num::Float`
[INFO] [stdout]  --> src/ssor.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use num::Float;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `num::Float`
[INFO] [stdout]  --> src/gs.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use num::Float;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `num::Float`
[INFO] [stdout]  --> src/jacobi.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use num::Float;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `alpha` is never read
[INFO] [stdout]   --> src/cg.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let mut alpha = 0.;
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `alpha` is never read
[INFO] [stdout]    --> src/cg.rs:105:13
[INFO] [stdout]     |
[INFO] [stdout] 105 |     let mut alpha = 0.;
[INFO] [stdout]     |             ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `det` is never used
[INFO] [stdout]   --> src/lu.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub fn det(a: &mut Array<f64, Ix2>, count_permute: usize) -> Option<f64> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `permute` is never used
[INFO] [stdout]    --> src/lu.rs:134:4
[INFO] [stdout]     |
[INFO] [stdout] 134 | fn permute(a: &mut Array<f64, Ix2>, p: &mut [usize]) {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.03s
[INFO] running `Command { std: "docker" "inspect" "a655963ba0f4bdcdc26b2ae7ad6d2864120a169f82e3b18ed551616b6585a713", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a655963ba0f4bdcdc26b2ae7ad6d2864120a169f82e3b18ed551616b6585a713", kill_on_drop: false }`
[INFO] [stdout] a655963ba0f4bdcdc26b2ae7ad6d2864120a169f82e3b18ed551616b6585a713
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a0279f2c296c370d64938d754b536bd64c9598dc24abc9dfe98e919ba1192fe2
[INFO] running `Command { std: "docker" "start" "-a" "a0279f2c296c370d64938d754b536bd64c9598dc24abc9dfe98e919ba1192fe2", kill_on_drop: false }`
[INFO] [stderr]    Compiling xapphire v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `num::Float`
[INFO] [stdout]  --> src/cg.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use num::Float;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `num::Float`
[INFO] [stdout]  --> src/ssor.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use num::Float;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `num::Float`
[INFO] [stdout]  --> src/gs.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use num::Float;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `num::Float`
[INFO] [stdout]  --> src/jacobi.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use num::Float;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `alpha` is never read
[INFO] [stdout]   --> src/cg.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let mut alpha = 0.;
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `alpha` is never read
[INFO] [stdout]    --> src/cg.rs:105:13
[INFO] [stdout]     |
[INFO] [stdout] 105 |     let mut alpha = 0.;
[INFO] [stdout]     |             ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `det` is never used
[INFO] [stdout]   --> src/lu.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub fn det(a: &mut Array<f64, Ix2>, count_permute: usize) -> Option<f64> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `permute` is never used
[INFO] [stdout]    --> src/lu.rs:134:4
[INFO] [stdout]     |
[INFO] [stdout] 134 | fn permute(a: &mut Array<f64, Ix2>, p: &mut [usize]) {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `num::Float`
[INFO] [stdout]  --> src/cg.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use num::Float;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `num::Float`
[INFO] [stdout]  --> src/util.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use num::Float;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `num::Float`
[INFO] [stdout]  --> src/ssor.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use num::Float;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `num::Float`
[INFO] [stdout]  --> src/gs.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use num::Float;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `num::Float`
[INFO] [stdout]  --> src/jacobi.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use num::Float;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `orig`
[INFO] [stdout]   --> src/cg.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |     let orig = a.clone();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_orig`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `alpha` is never read
[INFO] [stdout]    --> src/cg.rs:105:13
[INFO] [stdout]     |
[INFO] [stdout] 105 |     let mut alpha = 0.;
[INFO] [stdout]     |             ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `alpha` is never read
[INFO] [stdout]   --> src/cg.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let mut alpha = 0.;
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `orig`
[INFO] [stdout]   --> src/cg.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |     let orig = a.clone();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_orig`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/cg.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 |     let mut a = arr2(&[[5., 3., 1.], [3., 4., 2.], [1., 2., 3.]]);
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/cg.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |     let mut a = arr2(&[[4., 1.], [1., 3.]]);
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `orig`
[INFO] [stdout]    --> src/cg.rs:135:9
[INFO] [stdout]     |
[INFO] [stdout] 135 |     let orig = a.clone();
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_orig`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/cg.rs:133:9
[INFO] [stdout]     |
[INFO] [stdout] 133 |     let mut a = arr2(&[[5., 3., 1.], [3., 4., 2.], [1., 2., 3.]]);
[INFO] [stdout]     |         ----^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/cg.rs:141:9
[INFO] [stdout]     |
[INFO] [stdout] 141 |     let mut precond = arr2(&[[5., 0., 0.], [0., 4., 0.], [0., 0., 5.]]);
[INFO] [stdout]     |         ----^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `arr2_eq_tol` is never used
[INFO] [stdout]   --> src/util.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn arr2_eq_tol(a: &Array<f64, Ix2>, b: &Array<f64, Ix2>, tol: f64) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `det` is never used
[INFO] [stdout]   --> src/lu.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub fn det(a: &mut Array<f64, Ix2>, count_permute: usize) -> Option<f64> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.28s
[INFO] running `Command { std: "docker" "inspect" "a0279f2c296c370d64938d754b536bd64c9598dc24abc9dfe98e919ba1192fe2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0279f2c296c370d64938d754b536bd64c9598dc24abc9dfe98e919ba1192fe2", kill_on_drop: false }`
[INFO] [stdout] a0279f2c296c370d64938d754b536bd64c9598dc24abc9dfe98e919ba1192fe2