[INFO] cloning repository https://github.com/indutny/qcd
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/indutny/qcd" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Findutny%2Fqcd", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Findutny%2Fqcd'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 54097f9a952391cd23fa94b7e3ddd288627cf9f2
[INFO] checking indutny/qcd against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Findutny%2Fqcd" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/indutny/qcd on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/indutny/qcd
[INFO] finished tweaking git repo https://github.com/indutny/qcd
[INFO] tweaked toml for git repo https://github.com/indutny/qcd written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/indutny/qcd already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 917a8819e77ae73b9f52187cee6cfa6f868c1180ec54da4de187b63eddf0157b
[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" "917a8819e77ae73b9f52187cee6cfa6f868c1180ec54da4de187b63eddf0157b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "917a8819e77ae73b9f52187cee6cfa6f868c1180ec54da4de187b63eddf0157b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "917a8819e77ae73b9f52187cee6cfa6f868c1180ec54da4de187b63eddf0157b", kill_on_drop: false }`
[INFO] [stdout] 917a8819e77ae73b9f52187cee6cfa6f868c1180ec54da4de187b63eddf0157b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 19f62242344d9c920f283faac80fdad983dbe04c1f14e92dc1a44853bc88e69b
[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" "19f62242344d9c920f283faac80fdad983dbe04c1f14e92dc1a44853bc88e69b", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking getrandom v0.1.13
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking qcd v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::complex::*`
[INFO] [stdout]  --> src/lattice.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::complex::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Index`
[INFO] [stdout]  --> src/lattice.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::ops::Index;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::complex::*`
[INFO] [stdout]  --> src/lattice.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::complex::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Index`
[INFO] [stdout]  --> src/lattice.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::ops::Index;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/lattice.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |         for i in 0..len {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/lattice.rs:36:35
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn compute_staples(&self, i: usize) -> [Matrix; 6] {
[INFO] [stdout]    |                                   ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `SPREAD`
[INFO] [stdout]  --> src/color.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | const SPREAD: f64 = 0.5;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `EPSILON`
[INFO] [stdout]   --> src/color.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | const EPSILON: f64 = 1e-23;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `rng`
[INFO] [stdout]   --> src/color.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     rng: ThreadRng,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `gen`
[INFO] [stdout]   --> src/color.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn gen(&mut self) -> Matrix {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `gen_su2`
[INFO] [stdout]   --> src/color.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn gen_su2(&mut self) -> [Complex; 4] {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/complex.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn new(re: f64, im: f64) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `norm`
[INFO] [stdout]   --> src/complex.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn norm(self: Self) -> f64 {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/cvector.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn new(values: [Complex; 3]) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `norm_sqr`
[INFO] [stdout]   --> src/cvector.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn norm_sqr(&self) -> f64 {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `norm`
[INFO] [stdout]   --> src/cvector.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn norm(&self) -> f64 {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rescale`
[INFO] [stdout]   --> src/cvector.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn rescale(&self, factor: Complex) -> CVector {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dot`
[INFO] [stdout]   --> src/cvector.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn dot(lhs: &CVector, rhs: &CVector) -> Complex {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Lattice`
[INFO] [stdout]  --> src/lattice.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Lattice {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `cold_with_size`
[INFO] [stdout]   --> src/lattice.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn cold_with_size(size: usize) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `sweep`
[INFO] [stdout]   --> src/lattice.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn sweep<F>(&mut self, mut func: F)
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `compute_staples`
[INFO] [stdout]   --> src/lattice.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn compute_staples(&self, i: usize) -> [Matrix; 6] {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Coordinate`
[INFO] [stdout]   --> src/lattice.rs:41:1
[INFO] [stdout]    |
[INFO] [stdout] 41 | type Coordinate = (usize, usize, usize, usize);
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `EPSILON`
[INFO] [stdout]  --> src/matrix.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | const EPSILON: f64 = 1e-23;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `identity`
[INFO] [stdout]   --> src/matrix.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn identity() -> Self {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `conj`
[INFO] [stdout]   --> src/matrix.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn conj(&self) -> Self {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `det`
[INFO] [stdout]   --> src/matrix.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn det(&self) -> Complex {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unitarize`
[INFO] [stdout]   --> src/matrix.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn unitarize(&self) -> Matrix {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 26 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/lattice.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |         for i in 0..len {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/lattice.rs:36:35
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn compute_staples(&self, i: usize) -> [Matrix; 6] {
[INFO] [stdout]    |                                   ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lattice`
[INFO] [stdout]   --> src/lattice.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 49 |         let lattice = Lattice::cold_with_size(8);
[INFO] [stdout]    |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_lattice`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `size`
[INFO] [stdout]  --> src/lattice.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     size: usize,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `links`
[INFO] [stdout]  --> src/lattice.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     links: Vec<[Matrix; 4]>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `sweep`
[INFO] [stdout]   --> src/lattice.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn sweep<F>(&mut self, mut func: F)
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `compute_staples`
[INFO] [stdout]   --> src/lattice.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn compute_staples(&self, i: usize) -> [Matrix; 6] {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Coordinate`
[INFO] [stdout]   --> src/lattice.rs:41:1
[INFO] [stdout]    |
[INFO] [stdout] 41 | type Coordinate = (usize, usize, usize, usize);
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.29s
[INFO] running `Command { std: "docker" "inspect" "19f62242344d9c920f283faac80fdad983dbe04c1f14e92dc1a44853bc88e69b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19f62242344d9c920f283faac80fdad983dbe04c1f14e92dc1a44853bc88e69b", kill_on_drop: false }`
[INFO] [stdout] 19f62242344d9c920f283faac80fdad983dbe04c1f14e92dc1a44853bc88e69b