[INFO] cloning repository https://github.com/mattywang7/learn-rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mattywang7/learn-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmattywang7%2Flearn-rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmattywang7%2Flearn-rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] b5392918aa5a1ca285e9aad95f407b68c8a79c76 [INFO] checking mattywang7/learn-rust against try#342ed2e8608ee307743c341962b427652cdb06e9 for pr-146562 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmattywang7%2Flearn-rust" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/mattywang7/learn-rust [INFO] finished tweaking git repo https://github.com/mattywang7/learn-rust [INFO] tweaked toml for git repo https://github.com/mattywang7/learn-rust written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/mattywang7/learn-rust on toolchain 342ed2e8608ee307743c341962b427652cdb06e9 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+342ed2e8608ee307743c341962b427652cdb06e9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/mattywang7/learn-rust 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" "+342ed2e8608ee307743c341962b427652cdb06e9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded libc v0.2.86 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+342ed2e8608ee307743c341962b427652cdb06e9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 7c833cf15b7e1031dcab3329d5d7d9500c667f40cbb48a91d0b77d417ba49180 [INFO] running `Command { std: "docker" "start" "-a" "7c833cf15b7e1031dcab3329d5d7d9500c667f40cbb48a91d0b77d417ba49180", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "7c833cf15b7e1031dcab3329d5d7d9500c667f40cbb48a91d0b77d417ba49180", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7c833cf15b7e1031dcab3329d5d7d9500c667f40cbb48a91d0b77d417ba49180", kill_on_drop: false }` [INFO] [stdout] 7c833cf15b7e1031dcab3329d5d7d9500c667f40cbb48a91d0b77d417ba49180 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+342ed2e8608ee307743c341962b427652cdb06e9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] ea2a56b1b07c92ce82e02ffe27b1717e1ab99b02e7337a4c28cc389beae2cf11 [INFO] running `Command { std: "docker" "start" "-a" "ea2a56b1b07c92ce82e02ffe27b1717e1ab99b02e7337a4c28cc389beae2cf11", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.86 [INFO] [stderr] Checking rand v0.5.6 [INFO] [stderr] Checking learn-rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `origin` [INFO] [stdout] --> src/main.rs:3:9 [INFO] [stdout] | [INFO] [stdout] 3 | let origin = Point(0, 0, 0); [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_origin` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `User` is never constructed [INFO] [stdout] --> src/main.rs:7:8 [INFO] [stdout] | [INFO] [stdout] 7 | struct User { [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `build_user` is never used [INFO] [stdout] --> src/main.rs:14:4 [INFO] [stdout] | [INFO] [stdout] 14 | fn build_user(email: String, username: String) -> User { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0` and `2` are never read [INFO] [stdout] --> src/main.rs:23:14 [INFO] [stdout] | [INFO] [stdout] 23 | struct Color(i32, i32, i32); [INFO] [stdout] | ----- ^^^ ^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this struct [INFO] [stdout] | [INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields [INFO] [stdout] | [INFO] [stdout] 23 - struct Color(i32, i32, i32); [INFO] [stdout] 23 + struct Color((), i32, ()); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0`, `1`, and `2` are never read [INFO] [stdout] --> src/main.rs:24:14 [INFO] [stdout] | [INFO] [stdout] 24 | struct Point(i32, i32, i32); [INFO] [stdout] | ----- ^^^ ^^^ ^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing these fields [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `origin` [INFO] [stdout] --> src/main.rs:3:9 [INFO] [stdout] | [INFO] [stdout] 3 | let origin = Point(0, 0, 0); [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_origin` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `User` is never constructed [INFO] [stdout] --> src/main.rs:7:8 [INFO] [stdout] | [INFO] [stdout] 7 | struct User { [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `build_user` is never used [INFO] [stdout] --> src/main.rs:14:4 [INFO] [stdout] | [INFO] [stdout] 14 | fn build_user(email: String, username: String) -> User { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0` and `2` are never read [INFO] [stdout] --> src/main.rs:23:14 [INFO] [stdout] | [INFO] [stdout] 23 | struct Color(i32, i32, i32); [INFO] [stdout] | ----- ^^^ ^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this struct [INFO] [stdout] | [INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields [INFO] [stdout] | [INFO] [stdout] 23 - struct Color(i32, i32, i32); [INFO] [stdout] 23 + struct Color((), i32, ()); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0`, `1`, and `2` are never read [INFO] [stdout] --> src/main.rs:24:14 [INFO] [stdout] | [INFO] [stdout] 24 | struct Point(i32, i32, i32); [INFO] [stdout] | ----- ^^^ ^^^ ^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing these fields [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.67s [INFO] running `Command { std: "docker" "inspect" "ea2a56b1b07c92ce82e02ffe27b1717e1ab99b02e7337a4c28cc389beae2cf11", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ea2a56b1b07c92ce82e02ffe27b1717e1ab99b02e7337a4c28cc389beae2cf11", kill_on_drop: false }` [INFO] [stdout] ea2a56b1b07c92ce82e02ffe27b1717e1ab99b02e7337a4c28cc389beae2cf11