[INFO] cloning repository https://github.com/romatthe/tracer-tong
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/romatthe/tracer-tong" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fromatthe%2Ftracer-tong", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fromatthe%2Ftracer-tong'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8c7c26c7addaf44e617285c94f2491cedbd79292
[INFO] checking romatthe/tracer-tong against master#5e3f1b148db5bfa27fee52464ae1f5d34c49d77b for pr-75502
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fromatthe%2Ftracer-tong" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/romatthe/tracer-tong on toolchain 5e3f1b148db5bfa27fee52464ae1f5d34c49d77b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/romatthe/tracer-tong
[INFO] finished tweaking git repo https://github.com/romatthe/tracer-tong
[INFO] tweaked toml for git repo https://github.com/romatthe/tracer-tong written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/romatthe/tracer-tong already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2feae0982fd44d39ec257d8a8fd7a49feab48c4e13471a90512a620c29467010
[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" "2feae0982fd44d39ec257d8a8fd7a49feab48c4e13471a90512a620c29467010", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2feae0982fd44d39ec257d8a8fd7a49feab48c4e13471a90512a620c29467010", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2feae0982fd44d39ec257d8a8fd7a49feab48c4e13471a90512a620c29467010", kill_on_drop: false }`
[INFO] [stdout] 2feae0982fd44d39ec257d8a8fd7a49feab48c4e13471a90512a620c29467010
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c908be8e9cffba8a11b5df6f4ba5ff8a1c243ba7caf14d5446c133eddb0c377f
[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" "c908be8e9cffba8a11b5df6f4ba5ff8a1c243ba7caf14d5446c133eddb0c377f", kill_on_drop: false }`
[INFO] [stderr]     Checking tracer-tong v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::ops::Mul`
[INFO] [stdout]  --> src/core/matrix.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::ops::Mul;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `vector`
[INFO] [stdout]  --> src/core/matrix.rs:3:33
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::core::tuple::{Tuple, vector};
[INFO] [stdout]   |                                 ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env::current_exe`
[INFO] [stdout]  --> src/core/matrix.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::env::current_exe;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Mul`
[INFO] [stdout]  --> src/core/matrix.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::ops::Mul;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `vector`
[INFO] [stdout]  --> src/core/matrix.rs:3:33
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::core::tuple::{Tuple, vector};
[INFO] [stdout]   |                                 ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env::current_exe`
[INFO] [stdout]  --> src/core/matrix.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::env::current_exe;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `point`, `vector`
[INFO] [stdout]    --> src/core/matrix.rs:246:30
[INFO] [stdout]     |
[INFO] [stdout] 246 |     use crate::core::tuple::{vector, point};
[INFO] [stdout]     |                              ^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/core/matrix.rs:165:30
[INFO] [stdout]     |
[INFO] [stdout] 165 |     pub fn sub_matrix(&self, x: usize, y: usize) -> Matrix3x3 {
[INFO] [stdout]     |                              ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/core/matrix.rs:165:40
[INFO] [stdout]     |
[INFO] [stdout] 165 |     pub fn sub_matrix(&self, x: usize, y: usize) -> Matrix3x3 {
[INFO] [stdout]     |                                        ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/core/matrix.rs:166:13
[INFO] [stdout]     |
[INFO] [stdout] 166 |         let mut sub = Matrix3x3::new();
[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: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/core/matrix.rs:165:30
[INFO] [stdout]     |
[INFO] [stdout] 165 |     pub fn sub_matrix(&self, x: usize, y: usize) -> Matrix3x3 {
[INFO] [stdout]     |                              ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/core/matrix.rs:165:40
[INFO] [stdout]     |
[INFO] [stdout] 165 |     pub fn sub_matrix(&self, x: usize, y: usize) -> Matrix3x3 {
[INFO] [stdout]     |                                        ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/core/matrix.rs:166:13
[INFO] [stdout]     |
[INFO] [stdout] 166 |         let mut sub = Matrix3x3::new();
[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: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.89s
[INFO] running `Command { std: "docker" "inspect" "c908be8e9cffba8a11b5df6f4ba5ff8a1c243ba7caf14d5446c133eddb0c377f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c908be8e9cffba8a11b5df6f4ba5ff8a1c243ba7caf14d5446c133eddb0c377f", kill_on_drop: false }`
[INFO] [stdout] c908be8e9cffba8a11b5df6f4ba5ff8a1c243ba7caf14d5446c133eddb0c377f