[INFO] cloning repository https://github.com/Angael/rust-async-test
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Angael/rust-async-test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAngael%2Frust-async-test", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAngael%2Frust-async-test'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5eceed33c269520f1ab3ac4f04782e3fb4f51b4a
[INFO] checking Angael/rust-async-test against master#36b21637e93b038453924d3c66821089e71d8baa for pr-143164
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAngael%2Frust-async-test" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Angael/rust-async-test
[INFO] finished tweaking git repo https://github.com/Angael/rust-async-test
[INFO] tweaked toml for git repo https://github.com/Angael/rust-async-test written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Angael/rust-async-test on toolchain 36b21637e93b038453924d3c66821089e71d8baa
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+36b21637e93b038453924d3c66821089e71d8baa" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Angael/rust-async-test 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" "+36b21637e93b038453924d3c66821089e71d8baa" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+36b21637e93b038453924d3c66821089e71d8baa" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 726536b4a94b0f4bc6da9abe15d8a29c4058c1eb4fc3f974f1ab6ecf8f53b9ef
[INFO] running `Command { std: "docker" "start" "-a" "726536b4a94b0f4bc6da9abe15d8a29c4058c1eb4fc3f974f1ab6ecf8f53b9ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "726536b4a94b0f4bc6da9abe15d8a29c4058c1eb4fc3f974f1ab6ecf8f53b9ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "726536b4a94b0f4bc6da9abe15d8a29c4058c1eb4fc3f974f1ab6ecf8f53b9ef", kill_on_drop: false }`
[INFO] [stdout] 726536b4a94b0f4bc6da9abe15d8a29c4058c1eb4fc3f974f1ab6ecf8f53b9ef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+36b21637e93b038453924d3c66821089e71d8baa" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 635dfc98768eb523801b9470ee74a880dc1b44f181ac1238454dae1cf6b2c9ca
[INFO] running `Command { std: "docker" "start" "-a" "635dfc98768eb523801b9470ee74a880dc1b44f181ac1238454dae1cf6b2c9ca", kill_on_drop: false }`
[INFO] [stderr]     Checking async-test v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Color` is never constructed
[INFO] [stdout]  --> src/examples/custom_structs.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Color {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `to_hex`, and `contrast` are never used
[INFO] [stdout]   --> src/examples/custom_structs.rs:9:8
[INFO] [stdout]    |
[INFO] [stdout] 8  | impl Color {
[INFO] [stdout]    | ---------- associated items in this implementation
[INFO] [stdout] 9  |     fn new(red: u8, green: u8, blue: u8) -> Color {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 13 |     fn to_hex(&self) -> String {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     fn contrast(&self, other: &Color) -> u8 {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/examples/smart_pointers.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 |     Cons(Box<List>),
[INFO] [stdout]   |     ---- ^^^^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 2 -     Cons(Box<List>),
[INFO] [stdout] 2 +     Cons(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Color` is never constructed
[INFO] [stdout]  --> src/examples/custom_structs.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Color {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `to_hex`, and `contrast` are never used
[INFO] [stdout]   --> src/examples/custom_structs.rs:9:8
[INFO] [stdout]    |
[INFO] [stdout] 8  | impl Color {
[INFO] [stdout]    | ---------- associated items in this implementation
[INFO] [stdout] 9  |     fn new(red: u8, green: u8, blue: u8) -> Color {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 13 |     fn to_hex(&self) -> String {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     fn contrast(&self, other: &Color) -> u8 {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/examples/smart_pointers.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 |     Cons(Box<List>),
[INFO] [stdout]   |     ---- ^^^^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 2 -     Cons(Box<List>),
[INFO] [stdout] 2 +     Cons(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "635dfc98768eb523801b9470ee74a880dc1b44f181ac1238454dae1cf6b2c9ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "635dfc98768eb523801b9470ee74a880dc1b44f181ac1238454dae1cf6b2c9ca", kill_on_drop: false }`
[INFO] [stdout] 635dfc98768eb523801b9470ee74a880dc1b44f181ac1238454dae1cf6b2c9ca
