[INFO] cloning repository https://github.com/bjs9527/rust_learn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bjs9527/rust_learn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbjs9527%2Frust_learn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbjs9527%2Frust_learn'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 499ea07c065fc05792f36ec2211596858c176058
[INFO] checking bjs9527/rust_learn against master#068609ce766e55d2e7371cd2a86143a6d7e8e2e4 for pr-138952
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbjs9527%2Frust_learn" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bjs9527/rust_learn on toolchain 068609ce766e55d2e7371cd2a86143a6d7e8e2e4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+068609ce766e55d2e7371cd2a86143a6d7e8e2e4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bjs9527/rust_learn
[INFO] finished tweaking git repo https://github.com/bjs9527/rust_learn
[INFO] tweaked toml for git repo https://github.com/bjs9527/rust_learn written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/bjs9527/rust_learn 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" "+068609ce766e55d2e7371cd2a86143a6d7e8e2e4" "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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+068609ce766e55d2e7371cd2a86143a6d7e8e2e4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9bd27e227aaf91429e9186cbf1b9288e11edf69e6589f196ee7ea8ef6ccb54aa
[INFO] running `Command { std: "docker" "start" "-a" "9bd27e227aaf91429e9186cbf1b9288e11edf69e6589f196ee7ea8ef6ccb54aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9bd27e227aaf91429e9186cbf1b9288e11edf69e6589f196ee7ea8ef6ccb54aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9bd27e227aaf91429e9186cbf1b9288e11edf69e6589f196ee7ea8ef6ccb54aa", kill_on_drop: false }`
[INFO] [stdout] 9bd27e227aaf91429e9186cbf1b9288e11edf69e6589f196ee7ea8ef6ccb54aa
[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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+068609ce766e55d2e7371cd2a86143a6d7e8e2e4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 474a0744874b8dd0fa7829d6f7837bb0a40c62dece3b95561a5aa50a267968bc
[INFO] running `Command { std: "docker" "start" "-a" "474a0744874b8dd0fa7829d6f7837bb0a40c62dece3b95561a5aa50a267968bc", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_learn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]  --> src/string_test.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     use super::*;
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]  --> src/trait_test.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Point<T> {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `x` is never used
[INFO] [stdout]  --> src/trait_test.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | impl<T> Point<T> {
[INFO] [stdout]   | ---------------- method in this implementation
[INFO] [stdout] 7 |     fn x(&self) -> &T {
[INFO] [stdout]   |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]  --> src/test_test.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Guess {
[INFO] [stdout]   |            ----- field in this struct
[INFO] [stdout] 2 |     value: i32,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `y` is never read
[INFO] [stdout]  --> src/trait_test.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Point<T> {
[INFO] [stdout]   |        ----- field in this struct
[INFO] [stdout] 2 |     x: T,
[INFO] [stdout] 3 |     y: T,
[INFO] [stdout]   |     ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]  --> src/test_test.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Guess {
[INFO] [stdout]   |            ----- field in this struct
[INFO] [stdout] 2 |     value: i32,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] running `Command { std: "docker" "inspect" "474a0744874b8dd0fa7829d6f7837bb0a40c62dece3b95561a5aa50a267968bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "474a0744874b8dd0fa7829d6f7837bb0a40c62dece3b95561a5aa50a267968bc", kill_on_drop: false }`
[INFO] [stdout] 474a0744874b8dd0fa7829d6f7837bb0a40c62dece3b95561a5aa50a267968bc