[INFO] fetching crate xapphire 0.1.0...
[INFO] checking xapphire-0.1.0 against beta-2020-07-24 for pr-75494-beta
[INFO] extracting crate xapphire 0.1.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate xapphire 0.1.0 on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a6318cfa1e3fd5f2b2a7b16b8a933dee0cf44ff43892b7e54f0a0790e7a7d6df
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a6318cfa1e3fd5f2b2a7b16b8a933dee0cf44ff43892b7e54f0a0790e7a7d6df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a6318cfa1e3fd5f2b2a7b16b8a933dee0cf44ff43892b7e54f0a0790e7a7d6df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6318cfa1e3fd5f2b2a7b16b8a933dee0cf44ff43892b7e54f0a0790e7a7d6df", kill_on_drop: false }`
[INFO] [stdout] a6318cfa1e3fd5f2b2a7b16b8a933dee0cf44ff43892b7e54f0a0790e7a7d6df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 98bdc843afd1a92515b6c06ac7f44374655419155e78eb84022f2b47104b4fff
[INFO] running `Command { std: "docker" "start" "-a" "98bdc843afd1a92515b6c06ac7f44374655419155e78eb84022f2b47104b4fff", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling ndarray v0.13.1
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-bigint v0.3.0
[INFO] [stderr]    Compiling num-rational v0.3.0
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]     Checking num-complex v0.3.0
[INFO] [stderr]     Checking num v0.3.0
[INFO] [stderr]     Checking 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)]` on by default
[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)]` on by default
[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 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: value assigned to `alpha` is never read
[INFO] [stdout]   --> src/cg.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let mut alpha = 0.;
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `alpha` is never read
[INFO] [stdout]    --> src/cg.rs:105:9
[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 is never used: `det`
[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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `permute`
[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: 8 warnings emitted
[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/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 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: value assigned to `alpha` is never read
[INFO] [stdout]   --> src/cg.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let mut alpha = 0.;
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `alpha` is never read
[INFO] [stdout]    --> src/cg.rs:105:9
[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: 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]    = note: `#[warn(unused_variables)]` on by default
[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] 
[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: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]    = note: `#[warn(unused_mut)]` on by default
[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] 
[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 is never used: `arr2_eq_tol`
[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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `det`
[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] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.30s
[INFO] running `Command { std: "docker" "inspect" "98bdc843afd1a92515b6c06ac7f44374655419155e78eb84022f2b47104b4fff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98bdc843afd1a92515b6c06ac7f44374655419155e78eb84022f2b47104b4fff", kill_on_drop: false }`
[INFO] [stdout] 98bdc843afd1a92515b6c06ac7f44374655419155e78eb84022f2b47104b4fff
