[INFO] cloning repository https://github.com/numoonchld/rust-essentials [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/numoonchld/rust-essentials" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnumoonchld%2Frust-essentials", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnumoonchld%2Frust-essentials'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 120761ae47909a4034752771392faa59f019625b [INFO] checking numoonchld/rust-essentials against master#40daf23eeb711dadf140b2536e67e3ff4c999196 for pr-142287 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnumoonchld%2Frust-essentials" "/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/numoonchld/rust-essentials on toolchain 40daf23eeb711dadf140b2536e67e3ff4c999196 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+40daf23eeb711dadf140b2536e67e3ff4c999196" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/numoonchld/rust-essentials [INFO] finished tweaking git repo https://github.com/numoonchld/rust-essentials [INFO] tweaked toml for git repo https://github.com/numoonchld/rust-essentials written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/numoonchld/rust-essentials 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" "+40daf23eeb711dadf140b2536e67e3ff4c999196" "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] 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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+40daf23eeb711dadf140b2536e67e3ff4c999196" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 1d8aead8074b2dbe4027fe1310e69a6086569691aa029ad162b635081e423cd4 [INFO] running `Command { std: "docker" "start" "-a" "1d8aead8074b2dbe4027fe1310e69a6086569691aa029ad162b635081e423cd4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "1d8aead8074b2dbe4027fe1310e69a6086569691aa029ad162b635081e423cd4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1d8aead8074b2dbe4027fe1310e69a6086569691aa029ad162b635081e423cd4", kill_on_drop: false }` [INFO] [stdout] 1d8aead8074b2dbe4027fe1310e69a6086569691aa029ad162b635081e423cd4 [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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+40daf23eeb711dadf140b2536e67e3ff4c999196" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 7bebcb7039b2426cddc484f37c56ccad1056bf1877033eb51f068c4dc1cff375 [INFO] running `Command { std: "docker" "start" "-a" "7bebcb7039b2426cddc484f37c56ccad1056bf1877033eb51f068c4dc1cff375", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.146 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Checking ppv-lite86 v0.2.17 [INFO] [stderr] Checking getrandom v0.2.10 [INFO] [stderr] Checking rand_core v0.6.4 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Checking rust-essentials v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `vehicle2` [INFO] [stdout] --> src/k_structs.rs:48:13 [INFO] [stdout] | [INFO] [stdout] 48 | let mut vehicle2 = Shuttle::new("Discovery"); [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_vehicle2` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/k_structs.rs:48:9 [INFO] [stdout] | [INFO] [stdout] 48 | let mut vehicle2 = Shuttle::new("Discovery"); [INFO] [stdout] | ----^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `1` and `2` are never read [INFO] [stdout] --> src/k_structs.rs:64:18 [INFO] [stdout] | [INFO] [stdout] 64 | struct Color(u8, u8, u8); //RGB [INFO] [stdout] | ----- ^^ ^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing these fields [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0` and `2` are never read [INFO] [stdout] --> src/k_structs.rs:65:14 [INFO] [stdout] | [INFO] [stdout] 65 | struct Point(u8, u8, u8); //XYZ-point [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] 65 - struct Point(u8, u8, u8); //XYZ-point [INFO] [stdout] 65 + struct Point((), u8, ()); //XYZ-point [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/i_modules.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | io::stdin().read_line(&mut buffer); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 7 | let _ = io::stdin().read_line(&mut buffer); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/j_input_output.rs:25:5 [INFO] [stdout] | [INFO] [stdout] 25 | fs::write("speech.txt", speech); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 25 | let _ = fs::write("speech.txt", speech); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/j_input_output.rs:32:5 [INFO] [stdout] | [INFO] [stdout] 32 | file.write(b"\npluto"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 32 | let _ = file.write(b"\npluto"); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `vehicle2` [INFO] [stdout] --> src/k_structs.rs:48:13 [INFO] [stdout] | [INFO] [stdout] 48 | let mut vehicle2 = Shuttle::new("Discovery"); [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_vehicle2` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/k_structs.rs:48:9 [INFO] [stdout] | [INFO] [stdout] 48 | let mut vehicle2 = Shuttle::new("Discovery"); [INFO] [stdout] | ----^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `1` and `2` are never read [INFO] [stdout] --> src/k_structs.rs:64:18 [INFO] [stdout] | [INFO] [stdout] 64 | struct Color(u8, u8, u8); //RGB [INFO] [stdout] | ----- ^^ ^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing these fields [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0` and `2` are never read [INFO] [stdout] --> src/k_structs.rs:65:14 [INFO] [stdout] | [INFO] [stdout] 65 | struct Point(u8, u8, u8); //XYZ-point [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] 65 - struct Point(u8, u8, u8); //XYZ-point [INFO] [stdout] 65 + struct Point((), u8, ()); //XYZ-point [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/i_modules.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | io::stdin().read_line(&mut buffer); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 7 | let _ = io::stdin().read_line(&mut buffer); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/j_input_output.rs:25:5 [INFO] [stdout] | [INFO] [stdout] 25 | fs::write("speech.txt", speech); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 25 | let _ = fs::write("speech.txt", speech); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/j_input_output.rs:32:5 [INFO] [stdout] | [INFO] [stdout] 32 | file.write(b"\npluto"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 32 | let _ = file.write(b"\npluto"); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.93s [INFO] running `Command { std: "docker" "inspect" "7bebcb7039b2426cddc484f37c56ccad1056bf1877033eb51f068c4dc1cff375", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7bebcb7039b2426cddc484f37c56ccad1056bf1877033eb51f068c4dc1cff375", kill_on_drop: false }` [INFO] [stdout] 7bebcb7039b2426cddc484f37c56ccad1056bf1877033eb51f068c4dc1cff375