[INFO] cloning repository https://github.com/kunal-arya/rust-proj
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kunal-arya/rust-proj" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkunal-arya%2Frust-proj", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkunal-arya%2Frust-proj'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e77edf41d37a0587837e8b448025bbe2c070f94d
[INFO] testing kunal-arya/rust-proj against 1.99.0-beta.1+cargoflags=--release for beta-release-1.99-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkunal-arya%2Frust-proj" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/kunal-arya/rust-proj
[INFO] finished tweaking git repo https://github.com/kunal-arya/rust-proj
[INFO] tweaked toml for git repo https://github.com/kunal-arya/rust-proj written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/kunal-arya/rust-proj on toolchain 1.99.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/kunal-arya/rust-proj 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" "+1.99.0-beta.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] f4a3679284511ae8e262437e30361f30c7353a300fbb464e002298cabec2be1c
[INFO] running `Command { std: "docker" "start" "f4a3679284511ae8e262437e30361f30c7353a300fbb464e002298cabec2be1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f4a3679284511ae8e262437e30361f30c7353a300fbb464e002298cabec2be1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "f4a3679284511ae8e262437e30361f30c7353a300fbb464e002298cabec2be1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f4a3679284511ae8e262437e30361f30c7353a300fbb464e002298cabec2be1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "f4a3679284511ae8e262437e30361f30c7353a300fbb464e002298cabec2be1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-proj v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `option`
[INFO] [stdout]  --> src/main.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{fs, option};
[INFO] [stdout]   |               ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `a` is never read
[INFO] [stdout]   --> src/main.rs:65:18
[INFO] [stdout]    |
[INFO] [stdout] 65 |      let mut a = 12;
[INFO] [stdout]    |                  ^^ this value is reassigned later and never used
[INFO] [stdout] 66 |      a = 20;
[INFO] [stdout]    |      ------ `a` is overwritten here before the previous value is read
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `direction`
[INFO] [stdout]    --> src/main.rs:226:16
[INFO] [stdout]     |
[INFO] [stdout] 226 | fn move_around(direction: Direction) {
[INFO] [stdout]     |                ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_direction`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `West`, `North`, and `South` are never constructed
[INFO] [stdout]    --> src/main.rs:184:5
[INFO] [stdout]     |
[INFO] [stdout] 182 | enum Direction {
[INFO] [stdout]     |      --------- variants in this enum
[INFO] [stdout] 183 |     East,
[INFO] [stdout] 184 |     West,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 185 |     North,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] 186 |     South
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `active` is never read
[INFO] [stdout]    --> src/main.rs:258:5
[INFO] [stdout]     |
[INFO] [stdout] 255 | struct User {
[INFO] [stdout]     |        ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 258 |     active: bool,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.44s
[INFO] running `Command { std: "docker" "inspect" "f4a3679284511ae8e262437e30361f30c7353a300fbb464e002298cabec2be1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "f4a3679284511ae8e262437e30361f30c7353a300fbb464e002298cabec2be1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "test" "--frozen" "--no-run" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-proj v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `option`
[INFO] [stdout]  --> src/main.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{fs, option};
[INFO] [stdout]   |               ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `a` is never read
[INFO] [stdout]   --> src/main.rs:65:18
[INFO] [stdout]    |
[INFO] [stdout] 65 |      let mut a = 12;
[INFO] [stdout]    |                  ^^ this value is reassigned later and never used
[INFO] [stdout] 66 |      a = 20;
[INFO] [stdout]    |      ------ `a` is overwritten here before the previous value is read
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `direction`
[INFO] [stdout]    --> src/main.rs:226:16
[INFO] [stdout]     |
[INFO] [stdout] 226 | fn move_around(direction: Direction) {
[INFO] [stdout]     |                ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_direction`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `West`, `North`, and `South` are never constructed
[INFO] [stdout]    --> src/main.rs:184:5
[INFO] [stdout]     |
[INFO] [stdout] 182 | enum Direction {
[INFO] [stdout]     |      --------- variants in this enum
[INFO] [stdout] 183 |     East,
[INFO] [stdout] 184 |     West,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 185 |     North,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] 186 |     South
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `active` is never read
[INFO] [stdout]    --> src/main.rs:258:5
[INFO] [stdout]     |
[INFO] [stdout] 255 | struct User {
[INFO] [stdout]     |        ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 258 |     active: bool,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.29s
[INFO] running `Command { std: "docker" "inspect" "f4a3679284511ae8e262437e30361f30c7353a300fbb464e002298cabec2be1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "f4a3679284511ae8e262437e30361f30c7353a300fbb464e002298cabec2be1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "test" "--frozen" "--release", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `option`
[INFO] [stderr]  --> src/main.rs:1:15
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::{fs, option};
[INFO] [stderr]   |               ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `a` is never read
[INFO] [stderr]   --> src/main.rs:65:18
[INFO] [stderr]    |
[INFO] [stderr] 65 |      let mut a = 12;
[INFO] [stderr]    |                  ^^ this value is reassigned later and never used
[INFO] [stderr] 66 |      a = 20;
[INFO] [stderr]    |      ------ `a` is overwritten here before the previous value is read
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `direction`
[INFO] [stderr]    --> src/main.rs:226:16
[INFO] [stderr]     |
[INFO] [stderr] 226 | fn move_around(direction: Direction) {
[INFO] [stderr]     |                ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_direction`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variants `West`, `North`, and `South` are never constructed
[INFO] [stderr]    --> src/main.rs:184:5
[INFO] [stderr]     |
[INFO] [stderr] 182 | enum Direction {
[INFO] [stderr]     |      --------- variants in this enum
[INFO] [stderr] 183 |     East,
[INFO] [stderr] 184 |     West,
[INFO] [stderr]     |     ^^^^
[INFO] [stderr] 185 |     North,
[INFO] [stderr]     |     ^^^^^
[INFO] [stderr] 186 |     South
[INFO] [stderr]     |     ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `active` is never read
[INFO] [stderr]    --> src/main.rs:258:5
[INFO] [stderr]     |
[INFO] [stderr] 255 | struct User {
[INFO] [stderr]     |        ---- field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 258 |     active: bool,
[INFO] [stderr]     |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-proj` (bin "rust-proj" test) generated 5 warnings (run `cargo fix --bin "rust-proj" -p rust-proj --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/release/deps/rust_proj-702db7b2d7197070)
[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" "f4a3679284511ae8e262437e30361f30c7353a300fbb464e002298cabec2be1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4a3679284511ae8e262437e30361f30c7353a300fbb464e002298cabec2be1c", kill_on_drop: false }`
[INFO] [stdout] f4a3679284511ae8e262437e30361f30c7353a300fbb464e002298cabec2be1c
