[INFO] cloning repository https://github.com/Arekebyu/linear_regression
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Arekebyu/linear_regression" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArekebyu%2Flinear_regression", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArekebyu%2Flinear_regression'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b4b104f18ff9e9c0f50e2c286b39b167ad6770b5
[INFO] testing Arekebyu/linear_regression against master#d98a5da813da67eb189387b8ccfb73cf481275d8+rustflags=-Copt-level=3 for pr-138759
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArekebyu%2Flinear_regression" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Arekebyu/linear_regression
[INFO] finished tweaking git repo https://github.com/Arekebyu/linear_regression
[INFO] tweaked toml for git repo https://github.com/Arekebyu/linear_regression written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Arekebyu/linear_regression on toolchain d98a5da813da67eb189387b8ccfb73cf481275d8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Arekebyu/linear_regression 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" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 54f641ae69fa772f5fc57f0a6547ea4140dde301f5bb63ef1d45a34ce6eea479
[INFO] running `Command { std: "docker" "start" "-a" "54f641ae69fa772f5fc57f0a6547ea4140dde301f5bb63ef1d45a34ce6eea479", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "54f641ae69fa772f5fc57f0a6547ea4140dde301f5bb63ef1d45a34ce6eea479", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54f641ae69fa772f5fc57f0a6547ea4140dde301f5bb63ef1d45a34ce6eea479", kill_on_drop: false }`
[INFO] [stdout] 54f641ae69fa772f5fc57f0a6547ea4140dde301f5bb63ef1d45a34ce6eea479
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Copt-level=3" "-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" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cf393285f2755ebc5964de3f364329d144f28512dcb029f2c957ba6772180d24
[INFO] running `Command { std: "docker" "start" "-a" "cf393285f2755ebc5964de3f364329d144f28512dcb029f2c957ba6772180d24", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling unicode-ident v1.0.17
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling syn v2.0.98
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling zerocopy v0.7.35
[INFO] [stderr]    Compiling ppv-lite86 v0.2.20
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling linear_regression v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]  --> src/linear_regression.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     return vec!{(0,4)};
[INFO] [stdout]   |     ------------------ any code following this expression is unreachable
[INFO] [stdout] 9 |     let mut partitions: Vec<(usize, usize)> = Vec::new();
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]  --> src/linear_regression.rs:7:23
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn divide_partitions (data: &Vec<(f64,f64)>, max_size: &i32) -> Vec<(usize, usize)> {
[INFO] [stdout]   |                       ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `max_size`
[INFO] [stdout]  --> src/linear_regression.rs:7:46
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn divide_partitions (data: &Vec<(f64,f64)>, max_size: &i32) -> Vec<(usize, usize)> {
[INFO] [stdout]   |                                              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_max_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 26.08s
[INFO] running `Command { std: "docker" "inspect" "cf393285f2755ebc5964de3f364329d144f28512dcb029f2c957ba6772180d24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf393285f2755ebc5964de3f364329d144f28512dcb029f2c957ba6772180d24", kill_on_drop: false }`
[INFO] [stdout] cf393285f2755ebc5964de3f364329d144f28512dcb029f2c957ba6772180d24
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Copt-level=3" "-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" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2e587e826ff9e62b4e241244b4cb7c3c27f1fc638db8abbb69805c1f5b293d98
[INFO] running `Command { std: "docker" "start" "-a" "2e587e826ff9e62b4e241244b4cb7c3c27f1fc638db8abbb69805c1f5b293d98", kill_on_drop: false }`
[INFO] [stderr]    Compiling linear_regression v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]  --> src/linear_regression.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     return vec!{(0,4)};
[INFO] [stdout]   |     ------------------ any code following this expression is unreachable
[INFO] [stdout] 9 |     let mut partitions: Vec<(usize, usize)> = Vec::new();
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]  --> src/linear_regression.rs:7:23
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn divide_partitions (data: &Vec<(f64,f64)>, max_size: &i32) -> Vec<(usize, usize)> {
[INFO] [stdout]   |                       ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `max_size`
[INFO] [stdout]  --> src/linear_regression.rs:7:46
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn divide_partitions (data: &Vec<(f64,f64)>, max_size: &i32) -> Vec<(usize, usize)> {
[INFO] [stdout]   |                                              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_max_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]  --> src/linear_regression.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     return vec!{(0,4)};
[INFO] [stdout]   |     ------------------ any code following this expression is unreachable
[INFO] [stdout] 9 |     let mut partitions: Vec<(usize, usize)> = Vec::new();
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]  --> src/linear_regression.rs:7:23
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn divide_partitions (data: &Vec<(f64,f64)>, max_size: &i32) -> Vec<(usize, usize)> {
[INFO] [stdout]   |                       ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `max_size`
[INFO] [stdout]  --> src/linear_regression.rs:7:46
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn divide_partitions (data: &Vec<(f64,f64)>, max_size: &i32) -> Vec<(usize, usize)> {
[INFO] [stdout]   |                                              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_max_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "2e587e826ff9e62b4e241244b4cb7c3c27f1fc638db8abbb69805c1f5b293d98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e587e826ff9e62b4e241244b4cb7c3c27f1fc638db8abbb69805c1f5b293d98", kill_on_drop: false }`
[INFO] [stdout] 2e587e826ff9e62b4e241244b4cb7c3c27f1fc638db8abbb69805c1f5b293d98
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Copt-level=3" "-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" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 459ed6aab280a69436bdc5f341e790f4dab369fc1087eecbc3c39911b96e3137
[INFO] running `Command { std: "docker" "start" "-a" "459ed6aab280a69436bdc5f341e790f4dab369fc1087eecbc3c39911b96e3137", kill_on_drop: false }`
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]  --> src/linear_regression.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     return vec!{(0,4)};
[INFO] [stderr]   |     ------------------ any code following this expression is unreachable
[INFO] [stderr] 9 |     let mut partitions: Vec<(usize, usize)> = Vec::new();
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `data`
[INFO] [stderr]  --> src/linear_regression.rs:7:23
[INFO] [stderr]   |
[INFO] [stderr] 7 | fn divide_partitions (data: &Vec<(f64,f64)>, max_size: &i32) -> Vec<(usize, usize)> {
[INFO] [stderr]   |                       ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `max_size`
[INFO] [stderr]  --> src/linear_regression.rs:7:46
[INFO] [stderr]   |
[INFO] [stderr] 7 | fn divide_partitions (data: &Vec<(f64,f64)>, max_size: &i32) -> Vec<(usize, usize)> {
[INFO] [stderr]   |                                              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_max_size`
[INFO] [stderr] 
[INFO] [stderr] warning: `linear_regression` (lib) generated 3 warnings
[INFO] [stderr] warning: `linear_regression` (lib test) generated 3 warnings (3 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/linear_regression-a1af0d8e176af2ae)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/linear_regression-2eae93e7630c825d)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests linear_regression
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "459ed6aab280a69436bdc5f341e790f4dab369fc1087eecbc3c39911b96e3137", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "459ed6aab280a69436bdc5f341e790f4dab369fc1087eecbc3c39911b96e3137", kill_on_drop: false }`
[INFO] [stdout] 459ed6aab280a69436bdc5f341e790f4dab369fc1087eecbc3c39911b96e3137
