[INFO] cloning repository https://github.com/link-a/learning-rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/link-a/learning-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flink-a%2Flearning-rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flink-a%2Flearning-rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 5cfe739935d47058eacef6536a5a34cefc528368 [INFO] checking link-a/learning-rust against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flink-a%2Flearning-rust" "/workspace/builds/worker-78/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-78/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/link-a/learning-rust on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/link-a/learning-rust [INFO] finished tweaking git repo https://github.com/link-a/learning-rust [INFO] tweaked toml for git repo https://github.com/link-a/learning-rust written to /workspace/builds/worker-78/source/Cargo.toml [INFO] crate git repo https://github.com/link-a/learning-rust already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "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 bloom v0.3.2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] e0f6a3f0fa8e739b3b63e017e100a0861947ea8b967632791b6e3fedc6b272c9 [INFO] running `Command { std: "docker" "start" "-a" "e0f6a3f0fa8e739b3b63e017e100a0861947ea8b967632791b6e3fedc6b272c9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "e0f6a3f0fa8e739b3b63e017e100a0861947ea8b967632791b6e3fedc6b272c9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e0f6a3f0fa8e739b3b63e017e100a0861947ea8b967632791b6e3fedc6b272c9", kill_on_drop: false }` [INFO] [stdout] e0f6a3f0fa8e739b3b63e017e100a0861947ea8b967632791b6e3fedc6b272c9 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 10c7d497c012f64a3dea930b80d865277042e75f2c2a9f4eb6286774ce9d23c4 [INFO] running `Command { std: "docker" "start" "-a" "10c7d497c012f64a3dea930b80d865277042e75f2c2a9f4eb6286774ce9d23c4", kill_on_drop: false }` [INFO] [stderr] Copying to /tmp/fixit [INFO] [stderr] Running `cargo fix --edition` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling libc v0.2.66 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Checking unicode-width v0.1.7 [INFO] [stderr] Checking strsim v0.8.0 [INFO] [stderr] Checking bit-vec v0.4.4 [INFO] [stderr] Checking ansi_term v0.11.0 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking bloom v0.3.2 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking clap v2.33.0 [INFO] [stderr] Checking ctci v0.1.0 (/tmp/fixit) [INFO] [stderr] Migrating src/bin/ownership.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/markov_build.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/anagram_groups.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/ref_playground.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/longest_common_subsequence.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/min_path_sum.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/maximal_square.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/ch1_1_1.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/ch1_1_2.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/max_subarray.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/valid_parenthesis_string.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/smallest_window_to_sort.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/fib.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/traits_example.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/hash_map_test.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/middle_linked_list.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/add_two_binary_strings.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/number_of_islands.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/validate_binary_tree.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/unsafe.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/linked_list.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/happy_numbers.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/perform_string_shifts.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/array_triples.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/jump_game.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/comment_block.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/maximum_depth_of_binary_tree.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/ch7_7_1.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/swap.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/slice_limits.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/diameter_binary_tree.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/strings_test.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/references.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/move_playground.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/brackets.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/last_stone_weight.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/product_of_array_except_self.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/move_zeroes.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/search_rotated_sorted_array.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/math_tests.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/min_depth_binary_tree.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/construct_binary_search_tree_from_preorder_traversal.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/multiple_arrays.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/max_distance_in_arrays.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/ref_cells.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/critical_connections.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/trapping_rain_water.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/main.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/house_robber_ii.rs from 2018 edition to 2021 [INFO] [stderr] Migrating src/bin/binary_search.rs from 2018 edition to 2021 [INFO] [stderr] Fixed src/bin/ref_playground.rs (1 fix) [INFO] [stderr] Fixed src/bin/unsafe.rs (1 fix) [INFO] [stdout] warning: unnecessary `unsafe` block [INFO] [stdout] --> src/bin/unsafe.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 11 | unsafe { [INFO] [stdout] | ^^^^^^ unnecessary `unsafe` block [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_unsafe)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `val` [INFO] [stdout] --> src/bin/unsafe.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | val: i32, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `next` [INFO] [stdout] --> src/bin/unsafe.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | next: Option>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary `unsafe` block [INFO] [stdout] --> src/bin/unsafe.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 11 | unsafe { [INFO] [stdout] | ^^^^^^ unnecessary `unsafe` block [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_unsafe)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `val` [INFO] [stdout] --> src/bin/unsafe.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | val: i32, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `next` [INFO] [stdout] --> src/bin/unsafe.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | next: Option>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0412]: cannot find type `VecDeque` in this scope [INFO] [stdout] --> src/bin/ref_playground.rs:43:24 [INFO] [stdout] | [INFO] [stdout] 43 | let mut queue: VecDeque>>> = VecDeque::new(); [INFO] [stdout] | ^^^^^^^^ not found in this scope [INFO] [stdout] | [INFO] [stdout] help: consider importing this struct [INFO] [stdout] | [INFO] [stdout] 26 | use std::collections::VecDeque; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `VecDeque` [INFO] [stdout] --> src/bin/ref_playground.rs:43:66 [INFO] [stdout] | [INFO] [stdout] 43 | let mut queue: VecDeque>>> = VecDeque::new(); [INFO] [stdout] | ^^^^^^^^ not found in this scope [INFO] [stdout] | [INFO] [stdout] help: consider importing this struct [INFO] [stdout] | [INFO] [stdout] 26 | use std::collections::VecDeque; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 2 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0412, E0433. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0412`. [INFO] [stdout] [INFO] [stderr] error: could not compile `ctci` due to 3 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: struct is never constructed: `Solution` [INFO] [stdout] --> src/bin/min_depth_binary_tree.rs:24:8 [INFO] [stdout] | [INFO] [stdout] 24 | struct Solution {} [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: `min_depth` [INFO] [stdout] --> src/bin/min_depth_binary_tree.rs:27:12 [INFO] [stdout] | [INFO] [stdout] 27 | pub fn min_depth(root: Option>>) -> i32 { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `NaiveSolution` [INFO] [stdout] --> src/bin/max_distance_in_arrays.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | struct NaiveSolution {} [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: `max_distance` [INFO] [stdout] --> src/bin/max_distance_in_arrays.rs:5:12 [INFO] [stdout] | [INFO] [stdout] 5 | pub fn max_distance(arrays: Vec>) -> i32 { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `FastestSolution` [INFO] [stdout] --> src/bin/max_distance_in_arrays.rs:23:8 [INFO] [stdout] | [INFO] [stdout] 23 | struct FastestSolution {} [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `max_distance` [INFO] [stdout] --> src/bin/max_distance_in_arrays.rs:26:12 [INFO] [stdout] | [INFO] [stdout] 26 | pub fn max_distance(arrays: Vec>) -> i32 { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Fixed src/bin/ref_cells.rs (5 fixes) [INFO] [stdout] warning: struct is never constructed: `DPSolution` [INFO] [stdout] --> src/bin/house_robber_ii.rs:2:8 [INFO] [stdout] | [INFO] [stdout] 2 | struct DPSolution {} [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: `rob_simple` [INFO] [stdout] --> src/bin/house_robber_ii.rs:5:8 [INFO] [stdout] | [INFO] [stdout] 5 | fn rob_simple(nums: &[i32]) -> i32 { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `rob` [INFO] [stdout] --> src/bin/house_robber_ii.rs:16:12 [INFO] [stdout] | [INFO] [stdout] 16 | pub fn rob(nums: Vec) -> i32 { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: build failed [INFO] [stderr] error: failed to migrate to next edition [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `cargo fix --edition --allow-no-vcs --allow-dirty --frozen --all --all-targets --message-format=json` (exit status: 101) [INFO] running `Command { std: "docker" "inspect" "10c7d497c012f64a3dea930b80d865277042e75f2c2a9f4eb6286774ce9d23c4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "10c7d497c012f64a3dea930b80d865277042e75f2c2a9f4eb6286774ce9d23c4", kill_on_drop: false }` [INFO] [stdout] 10c7d497c012f64a3dea930b80d865277042e75f2c2a9f4eb6286774ce9d23c4