[INFO] cloning repository https://github.com/CharaD7/rust_study
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/CharaD7/rust_study" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCharaD7%2Frust_study", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCharaD7%2Frust_study'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2b7b7b651aec96d1c2d1c5098bc1228d34bfdc7a
[INFO] building CharaD7/rust_study against master#ad211ced81509462cdfe4c29ed10f97279a0acae for pr-135216
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCharaD7%2Frust_study" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/CharaD7/rust_study on toolchain ad211ced81509462cdfe4c29ed10f97279a0acae
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/CharaD7/rust_study
[INFO] finished tweaking git repo https://github.com/CharaD7/rust_study
[INFO] tweaked toml for git repo https://github.com/CharaD7/rust_study written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/CharaD7/rust_study 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" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c5b95f44ab4c756298841b578cc41ad4731119f83531d90aa85423b44952f22b
[INFO] running `Command { std: "docker" "start" "-a" "c5b95f44ab4c756298841b578cc41ad4731119f83531d90aa85423b44952f22b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c5b95f44ab4c756298841b578cc41ad4731119f83531d90aa85423b44952f22b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5b95f44ab4c756298841b578cc41ad4731119f83531d90aa85423b44952f22b", kill_on_drop: false }`
[INFO] [stdout] c5b95f44ab4c756298841b578cc41ad4731119f83531d90aa85423b44952f22b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d5bf3c1e89704fcf511a93b041491bd1c8c59d1c969224221cf24c4d48df2a67
[INFO] running `Command { std: "docker" "start" "-a" "d5bf3c1e89704fcf511a93b041491bd1c8c59d1c969224221cf24c4d48df2a67", kill_on_drop: false }`
[INFO] [stderr]    Compiling using_loops v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `Right` is never constructed
[INFO] [stdout]  --> src/bin/enum-demo-2.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Direction {
[INFO] [stdout]   |      --------- variant in this enum
[INFO] [stdout] 2 |     Left,
[INFO] [stdout] 3 |     Right,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple variants are never constructed
[INFO] [stdout]   --> src/bin/a7.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | enum Color {
[INFO] [stdout]    |      ----- variants in this enum
[INFO] [stdout] 15 |     Red,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 16 |     Gold,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 17 |     Green,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 18 |     Indigo,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 19 |     Cyan,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 20 |     Magenta,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 21 |     Purple,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 22 |     Beige,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 23 |     Orange,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 24 |     Aqua,
[INFO] [stdout] 25 |     RoyalBlue,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 26 |     Yellow,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Up`, `Left`, and `Right` are never constructed
[INFO] [stdout]  --> src/bin/enum-demo-1.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Direction {
[INFO] [stdout]   |      --------- variants in this enum
[INFO] [stdout] 2 |     Up,
[INFO] [stdout]   |     ^^
[INFO] [stdout] 3 |     Down,
[INFO] [stdout] 4 |     Left,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 5 |     Right
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `employee`
[INFO] [stdout]   --> src/bin/tuple-demo.rs:22:10
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let (employee, access) = ("Jake", Access::Full);
[INFO] [stdout]    |          ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_employee`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `access`
[INFO] [stdout]   --> src/bin/tuple-demo.rs:22:20
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let (employee, access) = ("Jake", Access::Full);
[INFO] [stdout]    |                    ^^^^^^ help: if this is intentional, prefix it with an underscore: `_access`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.13s
[INFO] running `Command { std: "docker" "inspect" "d5bf3c1e89704fcf511a93b041491bd1c8c59d1c969224221cf24c4d48df2a67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5bf3c1e89704fcf511a93b041491bd1c8c59d1c969224221cf24c4d48df2a67", kill_on_drop: false }`
[INFO] [stdout] d5bf3c1e89704fcf511a93b041491bd1c8c59d1c969224221cf24c4d48df2a67
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 43f79958c1545183b44d07931625089784f68366c77d672d2d192cb524ff21e7
[INFO] running `Command { std: "docker" "start" "-a" "43f79958c1545183b44d07931625089784f68366c77d672d2d192cb524ff21e7", kill_on_drop: false }`
[INFO] [stderr]    Compiling using_loops v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variants `Up`, `Left`, and `Right` are never constructed
[INFO] [stdout]  --> src/bin/enum-demo-1.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Direction {
[INFO] [stdout]   |      --------- variants in this enum
[INFO] [stdout] 2 |     Up,
[INFO] [stdout]   |     ^^
[INFO] [stdout] 3 |     Down,
[INFO] [stdout] 4 |     Left,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 5 |     Right
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple variants are never constructed
[INFO] [stdout]   --> src/bin/a7.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | enum Color {
[INFO] [stdout]    |      ----- variants in this enum
[INFO] [stdout] 15 |     Red,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 16 |     Gold,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 17 |     Green,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 18 |     Indigo,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 19 |     Cyan,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 20 |     Magenta,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 21 |     Purple,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 22 |     Beige,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 23 |     Orange,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 24 |     Aqua,
[INFO] [stdout] 25 |     RoyalBlue,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 26 |     Yellow,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Right` is never constructed
[INFO] [stdout]  --> src/bin/enum-demo-2.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Direction {
[INFO] [stdout]   |      --------- variant in this enum
[INFO] [stdout] 2 |     Left,
[INFO] [stdout] 3 |     Right,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `employee`
[INFO] [stdout]   --> src/bin/tuple-demo.rs:22:10
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let (employee, access) = ("Jake", Access::Full);
[INFO] [stdout]    |          ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_employee`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `access`
[INFO] [stdout]   --> src/bin/tuple-demo.rs:22:20
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let (employee, access) = ("Jake", Access::Full);
[INFO] [stdout]    |                    ^^^^^^ help: if this is intentional, prefix it with an underscore: `_access`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.31s
[INFO] running `Command { std: "docker" "inspect" "43f79958c1545183b44d07931625089784f68366c77d672d2d192cb524ff21e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43f79958c1545183b44d07931625089784f68366c77d672d2d192cb524ff21e7", kill_on_drop: false }`
[INFO] [stdout] 43f79958c1545183b44d07931625089784f68366c77d672d2d192cb524ff21e7
