[INFO] cloning repository https://github.com/wahyukodar/rust-lessons [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wahyukodar/rust-lessons" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwahyukodar%2Frust-lessons", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwahyukodar%2Frust-lessons'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 70666f90dee60c01c7b06976029bd42e2c61f636 [INFO] checking wahyukodar/rust-lessons against try#8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 for pr-82565 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwahyukodar%2Frust-lessons" "/workspace/builds/worker-10/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/wahyukodar/rust-lessons on toolchain 8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/wahyukodar/rust-lessons [INFO] finished tweaking git repo https://github.com/wahyukodar/rust-lessons [INFO] tweaked toml for git repo https://github.com/wahyukodar/rust-lessons written to /workspace/builds/worker-10/source/Cargo.toml [INFO] crate git repo https://github.com/wahyukodar/rust-lessons already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 3b6e9f1f7d7c46cba9bbce24992a7a6692c1ac3e3485c7f2d6fca4f2b5b7e06d [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "3b6e9f1f7d7c46cba9bbce24992a7a6692c1ac3e3485c7f2d6fca4f2b5b7e06d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "3b6e9f1f7d7c46cba9bbce24992a7a6692c1ac3e3485c7f2d6fca4f2b5b7e06d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3b6e9f1f7d7c46cba9bbce24992a7a6692c1ac3e3485c7f2d6fca4f2b5b7e06d", kill_on_drop: false }` [INFO] [stdout] 3b6e9f1f7d7c46cba9bbce24992a7a6692c1ac3e3485c7f2d6fca4f2b5b7e06d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 7de7ad39b94de6c93e4aa2be958cdba4b2906e4af35cb52fd80ee8abdd9ab9e7 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "7de7ad39b94de6c93e4aa2be958cdba4b2906e4af35cb52fd80ee8abdd9ab9e7", kill_on_drop: false }` [INFO] [stderr] Checking step_1_7 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_7_sized) [INFO] [stderr] Checking step_1_9 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_9_phantom) [INFO] [stderr] Checking step_1 v0.1.0 (/opt/rustwide/workdir/1_concepts) [INFO] [stderr] Checking step_1_2 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_2_box_pin) [INFO] [stderr] Checking step_3_5 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_5_collections) [INFO] [stderr] Checking step_2_4 v0.1.0 (/opt/rustwide/workdir/2_idioms/2_4_generic_in_type_out) [INFO] [stderr] Checking step_3_3 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_3_date_time) [INFO] [stderr] Checking step_2_3 v0.1.0 (/opt/rustwide/workdir/2_idioms/2_3_bound_impl) [INFO] [stderr] Checking step_1_4 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_4_cow) [INFO] [stderr] Checking step_3_2 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_2_macro) [INFO] [stderr] Checking step_2_1 v0.1.0 (/opt/rustwide/workdir/2_idioms/2_1_type_safety) [INFO] [stderr] Checking step_3_4 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_4_regex_parsing) [INFO] [stderr] Checking step_3_6 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_6_serde) [INFO] [stdout] warning: unused variable: `year` [INFO] [stdout] --> 3_ecosystem/3_3_date_time/src/main.rs:10:23 [INFO] [stdout] | [INFO] [stdout] 10 | fn with_birthdate(year: i32, month: u32, day: u32) -> Self { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_year` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `month` [INFO] [stdout] --> 3_ecosystem/3_3_date_time/src/main.rs:10:34 [INFO] [stdout] | [INFO] [stdout] 10 | fn with_birthdate(year: i32, month: u32, day: u32) -> Self { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_month` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `day` [INFO] [stdout] --> 3_ecosystem/3_3_date_time/src/main.rs:10:46 [INFO] [stdout] | [INFO] [stdout] 10 | fn with_birthdate(year: i32, month: u32, day: u32) -> Self { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_day` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant is never used: `NOW` [INFO] [stdout] --> 3_ecosystem/3_3_date_time/src/main.rs:5:1 [INFO] [stdout] | [INFO] [stdout] 5 | const NOW: &str = "2019-06-26"; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking step_3_12 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_12_web_db) [INFO] [stdout] warning: struct is never constructed: `User` [INFO] [stdout] --> 3_ecosystem/3_3_date_time/src/main.rs:7:8 [INFO] [stdout] | [INFO] [stdout] 7 | struct User; [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `with_birthdate` [INFO] [stdout] --> 3_ecosystem/3_3_date_time/src/main.rs:10:8 [INFO] [stdout] | [INFO] [stdout] 10 | fn with_birthdate(year: i32, month: u32, day: u32) -> Self { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `age` [INFO] [stdout] --> 3_ecosystem/3_3_date_time/src/main.rs:15:8 [INFO] [stdout] | [INFO] [stdout] 15 | fn age(&self) -> u16 { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `is_adult` [INFO] [stdout] --> 3_ecosystem/3_3_date_time/src/main.rs:20:8 [INFO] [stdout] | [INFO] [stdout] 20 | fn is_adult(&self) -> bool { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking step_3_7 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_7_rand_crypto) [INFO] [stderr] Checking step_2_2 v0.1.0 (/opt/rustwide/workdir/2_idioms/2_2_mem_replace) [INFO] [stderr] Checking step_3_1 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_1_testing) [INFO] [stdout] warning: unused variable: `input` [INFO] [stdout] --> 3_ecosystem/3_4_regex_parsing/src/main.rs:5:10 [INFO] [stdout] | [INFO] [stdout] 5 | fn parse(input: &str) -> (Option, Option, Option) { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_input` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `parse` [INFO] [stdout] --> 3_ecosystem/3_4_regex_parsing/src/main.rs:5:4 [INFO] [stdout] | [INFO] [stdout] 5 | fn parse(input: &str) -> (Option, Option, Option) { [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Plus` [INFO] [stdout] --> 3_ecosystem/3_4_regex_parsing/src/main.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 11 | Plus, [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Minus` [INFO] [stdout] --> 3_ecosystem/3_4_regex_parsing/src/main.rs:12:5 [INFO] [stdout] | [INFO] [stdout] 12 | Minus, [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Integer` [INFO] [stdout] --> 3_ecosystem/3_4_regex_parsing/src/main.rs:17:5 [INFO] [stdout] | [INFO] [stdout] 17 | Integer(usize), [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Argument` [INFO] [stdout] --> 3_ecosystem/3_4_regex_parsing/src/main.rs:18:5 [INFO] [stdout] | [INFO] [stdout] 18 | Argument(usize), [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Asterisk` [INFO] [stdout] --> 3_ecosystem/3_4_regex_parsing/src/main.rs:19:5 [INFO] [stdout] | [INFO] [stdout] 19 | Asterisk, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking step_1_8 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_8_thread_safety) [INFO] [stderr] Checking step_2 v0.1.0 (/opt/rustwide/workdir/2_idioms) [INFO] [stderr] Checking step_1_1 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_1_default_clone_copy) [INFO] [stdout] warning: 7 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking step_3_8 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_8_log) [INFO] [stderr] Checking step_1_3 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_3_rc_cell) [INFO] [stdout] warning: unused variable: `year` [INFO] [stdout] --> 3_ecosystem/3_3_date_time/src/main.rs:10:23 [INFO] [stdout] | [INFO] [stdout] 10 | fn with_birthdate(year: i32, month: u32, day: u32) -> Self { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_year` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `month` [INFO] [stdout] --> 3_ecosystem/3_3_date_time/src/main.rs:10:34 [INFO] [stdout] | [INFO] [stdout] 10 | fn with_birthdate(year: i32, month: u32, day: u32) -> Self { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_month` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `day` [INFO] [stdout] --> 3_ecosystem/3_3_date_time/src/main.rs:10:46 [INFO] [stdout] | [INFO] [stdout] 10 | fn with_birthdate(year: i32, month: u32, day: u32) -> Self { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_day` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking step_1_5 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_5_convert_cast_deref) [INFO] [stdout] warning: constant is never used: `NOW` [INFO] [stdout] --> 3_ecosystem/3_3_date_time/src/main.rs:5:1 [INFO] [stdout] | [INFO] [stdout] 5 | const NOW: &str = "2019-06-26"; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `is_adult` [INFO] [stdout] --> 3_ecosystem/3_3_date_time/src/main.rs:20:8 [INFO] [stdout] | [INFO] [stdout] 20 | fn is_adult(&self) -> bool { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking step_3 v0.1.0 (/opt/rustwide/workdir/3_ecosystem) [INFO] [stderr] Checking step_3_9 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_9_cmd_env_conf) [INFO] [stderr] Checking step_3_10 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_10_threads) [INFO] [stdout] warning: unused variable: `input` [INFO] [stdout] --> 3_ecosystem/3_4_regex_parsing/src/main.rs:5:10 [INFO] [stdout] | [INFO] [stdout] 5 | fn parse(input: &str) -> (Option, Option, Option) { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_input` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking step_3_11 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_11_async) [INFO] [stderr] Checking step_1_6 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_6_dispatch) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 6.55s [INFO] running `Command { std: "docker" "inspect" "7de7ad39b94de6c93e4aa2be958cdba4b2906e4af35cb52fd80ee8abdd9ab9e7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7de7ad39b94de6c93e4aa2be958cdba4b2906e4af35cb52fd80ee8abdd9ab9e7", kill_on_drop: false }` [INFO] [stdout] 7de7ad39b94de6c93e4aa2be958cdba4b2906e4af35cb52fd80ee8abdd9ab9e7