[INFO] cloning repository https://github.com/LordMonarch/the-rust-programming-language [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LordMonarch/the-rust-programming-language" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLordMonarch%2Fthe-rust-programming-language", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLordMonarch%2Fthe-rust-programming-language'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] aa6f30d785dc67adc17ae840e16aa5fa54d7c9ad [INFO] checking LordMonarch/the-rust-programming-language against try#70daa2c0d8eed7066b07966f3c0b0b8622bff4e4 for pr-151539 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLordMonarch%2Fthe-rust-programming-language" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/LordMonarch/the-rust-programming-language [INFO] finished tweaking git repo https://github.com/LordMonarch/the-rust-programming-language [INFO] tweaked toml for git repo https://github.com/LordMonarch/the-rust-programming-language written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/LordMonarch/the-rust-programming-language on toolchain 70daa2c0d8eed7066b07966f3c0b0b8622bff4e4 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+70daa2c0d8eed7066b07966f3c0b0b8622bff4e4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/LordMonarch/the-rust-programming-language 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" "+70daa2c0d8eed7066b07966f3c0b0b8622bff4e4" "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-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+70daa2c0d8eed7066b07966f3c0b0b8622bff4e4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 5249bd487ab48ae38f3baefac1599a885cb9a5e6a1bdee8586d7103109f7aacf [INFO] running `Command { std: "docker" "start" "-a" "5249bd487ab48ae38f3baefac1599a885cb9a5e6a1bdee8586d7103109f7aacf", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "5249bd487ab48ae38f3baefac1599a885cb9a5e6a1bdee8586d7103109f7aacf", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5249bd487ab48ae38f3baefac1599a885cb9a5e6a1bdee8586d7103109f7aacf", kill_on_drop: false }` [INFO] [stdout] 5249bd487ab48ae38f3baefac1599a885cb9a5e6a1bdee8586d7103109f7aacf [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+70daa2c0d8eed7066b07966f3c0b0b8622bff4e4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4591d19ddab67de2a96818defa880489db43fa05138e244aefcff8d7254fd63a [INFO] running `Command { std: "docker" "start" "-a" "4591d19ddab67de2a96818defa880489db43fa05138e244aefcff8d7254fd63a", kill_on_drop: false }` [INFO] [stderr] Checking string_literals_as_slices v0.1.0 (/opt/rustwide/workdir/04-understanding-ownership/string_literals_as_slices) [INFO] [stderr] Checking ownership v0.1.0 (/opt/rustwide/workdir/04-understanding-ownership/ownership) [INFO] [stderr] Checking comments v0.1.0 (/opt/rustwide/workdir/03-common-programming-concepts/comments) [INFO] [stderr] Checking methods v0.1.0 (/opt/rustwide/workdir/05-using-structs-to-structure-related-data/methods) [INFO] [stderr] Checking other_slices v0.1.0 (/opt/rustwide/workdir/04-understanding-ownership/other_slices) [INFO] [stderr] Checking loops v0.1.0 (/opt/rustwide/workdir/03-common-programming-concepts/control-flow/loops) [INFO] [stderr] Checking mutable_references v0.1.0 (/opt/rustwide/workdir/04-understanding-ownership/mutable_references) [INFO] [stderr] Checking creating_instances_with_struct_update_syntax v0.1.0 (/opt/rustwide/workdir/05-using-structs-to-structure-related-data/creating_instances_with_struct_update_syntax) [INFO] [stderr] Checking creating_different_types_with_tuple_structs v0.1.0 (/opt/rustwide/workdir/05-using-structs-to-structure-related-data/creating_different_types_with_tuple_structs) [INFO] [stderr] Checking functions v0.1.0 (/opt/rustwide/workdir/03-common-programming-concepts/functions) [INFO] [stderr] Checking string_slices v0.1.0 (/opt/rustwide/workdir/04-understanding-ownership/string_slices) [INFO] [stderr] Checking defining_unit-like_structs v0.1.0 (/opt/rustwide/workdir/05-using-structs-to-structure-related-data/defining_unit-like_structs) [INFO] [stderr] Checking references_and_borrowing v0.1.0 (/opt/rustwide/workdir/04-understanding-ownership/references_and_borrowing) [INFO] [stderr] Checking guessing_game v0.1.0 (/opt/rustwide/workdir/02-programming-a-guessing-game/guessing_game) [INFO] [stdout] warning: unused variable: `lucky_number` [INFO] [stdout] --> 03-common-programming-concepts/comments/src/main.rs:5:9 [INFO] [stdout] | [INFO] [stdout] 5 | let lucky_number = 7; // I'm feeling lucky today [INFO] [stdout] | ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_lucky_number` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `lucky_number` [INFO] [stdout] --> 03-common-programming-concepts/comments/src/main.rs:10:9 [INFO] [stdout] | [INFO] [stdout] 10 | let lucky_number = 7; [INFO] [stdout] | ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_lucky_number` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `s10` is never read [INFO] [stdout] --> 04-understanding-ownership/ownership/src/main.rs:66:19 [INFO] [stdout] | [INFO] [stdout] 66 | let mut s10 = String::from("hello"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s1` [INFO] [stdout] --> 04-understanding-ownership/ownership/src/main.rs:128:9 [INFO] [stdout] | [INFO] [stdout] 128 | let s1 = gives_ownership(); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s1` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s3` [INFO] [stdout] --> 04-understanding-ownership/ownership/src/main.rs:135:9 [INFO] [stdout] | [INFO] [stdout] 135 | let s3 = takes_and_gives_back(s2); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s3` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking associated_functions v0.1.0 (/opt/rustwide/workdir/05-using-structs-to-structure-related-data/associated_functions) [INFO] [stderr] Checking data_types v0.1.0 (/opt/rustwide/workdir/03-common-programming-concepts/data_types) [INFO] [stdout] warning: unused variable: `subject` [INFO] [stdout] --> 05-using-structs-to-structure-related-data/defining_unit-like_structs/src/main.rs:7:9 [INFO] [stdout] | [INFO] [stdout] 7 | let subject = AlwaysEqual; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_subject` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking defining_and_instantiating_structs v0.1.0 (/opt/rustwide/workdir/05-using-structs-to-structure-related-data/defining_and_instantiating_structs) [INFO] [stdout] warning: function `infinite_loop` is never used [INFO] [stdout] --> 03-common-programming-concepts/control-flow/loops/src/main.rs:9:4 [INFO] [stdout] | [INFO] [stdout] 9 | fn infinite_loop() { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking variables v0.1.0 (/opt/rustwide/workdir/03-common-programming-concepts/variables) [INFO] [stdout] warning: fields `width` and `height` are never read [INFO] [stdout] --> 05-using-structs-to-structure-related-data/associated_functions/src/main.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 7 | struct Rectangle { [INFO] [stdout] | --------- fields in this struct [INFO] [stdout] 8 | width: u32, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 9 | height: u32, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Rectangle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking branches v0.1.0 (/opt/rustwide/workdir/03-common-programming-concepts/control-flow/branches) [INFO] [stdout] warning: unused variable: `lucky_number` [INFO] [stdout] --> 03-common-programming-concepts/comments/src/main.rs:5:9 [INFO] [stdout] | [INFO] [stdout] 5 | let lucky_number = 7; // I'm feeling lucky today [INFO] [stdout] | ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_lucky_number` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `lucky_number` [INFO] [stdout] --> 03-common-programming-concepts/comments/src/main.rs:10:9 [INFO] [stdout] | [INFO] [stdout] 10 | let lucky_number = 7; [INFO] [stdout] | ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_lucky_number` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking methods_with_more_parameters v0.1.0 (/opt/rustwide/workdir/05-using-structs-to-structure-related-data/methods_with_more_parameters) [INFO] [stderr] Checking an_example_programm_using_structs v0.1.0 (/opt/rustwide/workdir/05-using-structs-to-structure-related-data/an_example_programm_using_structs) [INFO] [stderr] Checking debuging v0.1.0 (/opt/rustwide/workdir/05-using-structs-to-structure-related-data/debuging) [INFO] [stdout] warning: unused variable: `tup` [INFO] [stdout] --> 03-common-programming-concepts/data_types/src/main.rs:65:9 [INFO] [stdout] | [INFO] [stdout] 65 | let tup: (i32, f64, u8) = (500, 6.4, 1); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_tup` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> 03-common-programming-concepts/data_types/src/main.rs:86:9 [INFO] [stdout] | [INFO] [stdout] 86 | let a = [1, 2, 3, 4, 5]; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `months` [INFO] [stdout] --> 03-common-programming-concepts/data_types/src/main.rs:87:9 [INFO] [stdout] | [INFO] [stdout] 87 | let months = ["January", "February", "March", "April", "May", "June", "July", [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_months` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> 03-common-programming-concepts/data_types/src/main.rs:91:9 [INFO] [stdout] | [INFO] [stdout] 91 | let a: [i32; 5] = [1, 2, 3, 4, 5]; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> 03-common-programming-concepts/data_types/src/main.rs:94:9 [INFO] [stdout] | [INFO] [stdout] 94 | let a = [3; 5]; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `width` and `height` are never read [INFO] [stdout] --> 05-using-structs-to-structure-related-data/associated_functions/src/main.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 7 | struct Rectangle { [INFO] [stdout] | --------- fields in this struct [INFO] [stdout] 8 | width: u32, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 9 | height: u32, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Rectangle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking aufgaben v0.1.0 (/opt/rustwide/workdir/03-common-programming-concepts/aufgaben) [INFO] [stdout] warning: value assigned to `s10` is never read [INFO] [stdout] --> 04-understanding-ownership/ownership/src/main.rs:66:19 [INFO] [stdout] | [INFO] [stdout] 66 | let mut s10 = String::from("hello"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `tup` [INFO] [stdout] --> 03-common-programming-concepts/data_types/src/main.rs:65:9 [INFO] [stdout] | [INFO] [stdout] 65 | let tup: (i32, f64, u8) = (500, 6.4, 1); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_tup` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> 03-common-programming-concepts/data_types/src/main.rs:86:9 [INFO] [stdout] | [INFO] [stdout] 86 | let a = [1, 2, 3, 4, 5]; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `months` [INFO] [stdout] --> 03-common-programming-concepts/data_types/src/main.rs:87:9 [INFO] [stdout] | [INFO] [stdout] 87 | let months = ["January", "February", "March", "April", "May", "June", "July", [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_months` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> 03-common-programming-concepts/data_types/src/main.rs:91:9 [INFO] [stdout] | [INFO] [stdout] 91 | let a: [i32; 5] = [1, 2, 3, 4, 5]; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> 03-common-programming-concepts/data_types/src/main.rs:94:9 [INFO] [stdout] | [INFO] [stdout] 94 | let a = [3; 5]; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s1` [INFO] [stdout] --> 04-understanding-ownership/ownership/src/main.rs:128:9 [INFO] [stdout] | [INFO] [stdout] 128 | let s1 = gives_ownership(); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s1` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s3` [INFO] [stdout] --> 04-understanding-ownership/ownership/src/main.rs:135:9 [INFO] [stdout] | [INFO] [stdout] 135 | let s3 = takes_and_gives_back(s2); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s3` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking hello_world v0.1.0 (/opt/rustwide/workdir/01-getting-startet/hello_world) [INFO] [stdout] warning: unused variable: `subject` [INFO] [stdout] --> 05-using-structs-to-structure-related-data/defining_unit-like_structs/src/main.rs:7:9 [INFO] [stdout] | [INFO] [stdout] 7 | let subject = AlwaysEqual; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_subject` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `infinite_loop` is never used [INFO] [stdout] --> 03-common-programming-concepts/control-flow/loops/src/main.rs:9:4 [INFO] [stdout] | [INFO] [stdout] 9 | fn infinite_loop() { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.04s [INFO] running `Command { std: "docker" "inspect" "4591d19ddab67de2a96818defa880489db43fa05138e244aefcff8d7254fd63a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4591d19ddab67de2a96818defa880489db43fa05138e244aefcff8d7254fd63a", kill_on_drop: false }` [INFO] [stdout] 4591d19ddab67de2a96818defa880489db43fa05138e244aefcff8d7254fd63a