[INFO] cloning repository https://github.com/AtsukiYokota/rust_practice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AtsukiYokota/rust_practice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAtsukiYokota%2Frust_practice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAtsukiYokota%2Frust_practice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4ab9c9c44ecc4c9bfea2ff1f2ba3c4178b350ab5
[INFO] checking AtsukiYokota/rust_practice against master#36b21637e93b038453924d3c66821089e71d8baa for pr-143164
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAtsukiYokota%2Frust_practice" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/AtsukiYokota/rust_practice
[INFO] finished tweaking git repo https://github.com/AtsukiYokota/rust_practice
[INFO] tweaked toml for git repo https://github.com/AtsukiYokota/rust_practice written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/AtsukiYokota/rust_practice 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/AtsukiYokota/rust_practice 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-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] ef1faa81f02ebf6524f11ee1354032c133fc7701026ecc6e62962706f81e9fc6
[INFO] running `Command { std: "docker" "start" "-a" "ef1faa81f02ebf6524f11ee1354032c133fc7701026ecc6e62962706f81e9fc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef1faa81f02ebf6524f11ee1354032c133fc7701026ecc6e62962706f81e9fc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef1faa81f02ebf6524f11ee1354032c133fc7701026ecc6e62962706f81e9fc6", kill_on_drop: false }`
[INFO] [stdout] ef1faa81f02ebf6524f11ee1354032c133fc7701026ecc6e62962706f81e9fc6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 123c595416d332d1872f96ca90c7407affab1355942a05f7df16323867f2f318
[INFO] running `Command { std: "docker" "start" "-a" "123c595416d332d1872f96ca90c7407affab1355942a05f7df16323867f2f318", kill_on_drop: false }`
[INFO] [stderr]     Checking parser v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:526:25
[INFO] [stdout]     |
[INFO] [stdout] 526 |         let (e, loc): (&StdError, Loc) = match self {
[INFO] [stdout]     |                         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 526 |         let (e, loc): (&dyn StdError, Loc) = match self {
[INFO] [stdout]     |                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:526:25
[INFO] [stdout]     |
[INFO] [stdout] 526 |         let (e, loc): (&StdError, Loc) = match self {
[INFO] [stdout]     |                         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 526 |         let (e, loc): (&dyn StdError, Loc) = match self {
[INFO] [stdout]     |                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `num` is never used
[INFO] [stdout]    --> src/main.rs:204:8
[INFO] [stdout]     |
[INFO] [stdout] 203 | impl Ast {
[INFO] [stdout]     | -------- associated function in this implementation
[INFO] [stdout] 204 |     fn num(n: u64, loc: Loc) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `UnexpectedToken` is never constructed
[INFO] [stdout]    --> src/main.rs:272:5
[INFO] [stdout]     |
[INFO] [stdout] 271 | enum ParseError {
[INFO] [stdout]     |      ---------- variant in this enum
[INFO] [stdout] 272 |     UnexpectedToken(Token),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ParseError` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `num` is never used
[INFO] [stdout]    --> src/main.rs:204:8
[INFO] [stdout]     |
[INFO] [stdout] 203 | impl Ast {
[INFO] [stdout]     | -------- associated function in this implementation
[INFO] [stdout] 204 |     fn num(n: u64, loc: Loc) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `UnexpectedToken` is never constructed
[INFO] [stdout]    --> src/main.rs:272:5
[INFO] [stdout]     |
[INFO] [stdout] 271 | enum ParseError {
[INFO] [stdout]     |      ---------- variant in this enum
[INFO] [stdout] 272 |     UnexpectedToken(Token),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ParseError` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `Command { std: "docker" "inspect" "123c595416d332d1872f96ca90c7407affab1355942a05f7df16323867f2f318", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "123c595416d332d1872f96ca90c7407affab1355942a05f7df16323867f2f318", kill_on_drop: false }`
[INFO] [stdout] 123c595416d332d1872f96ca90c7407affab1355942a05f7df16323867f2f318
