[INFO] cloning repository https://github.com/CMU-Blockchain-Group/rust-workshop-0
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/CMU-Blockchain-Group/rust-workshop-0" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCMU-Blockchain-Group%2Frust-workshop-0", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCMU-Blockchain-Group%2Frust-workshop-0'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 88e8e82df47bb6e2955ab850f906248baad9c8fe
[INFO] testing CMU-Blockchain-Group/rust-workshop-0 against try#9f93af291970322f4f1c6315ccde4d7078201159 for pr-146098-6
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCMU-Blockchain-Group%2Frust-workshop-0" "/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/CMU-Blockchain-Group/rust-workshop-0
[INFO] finished tweaking git repo https://github.com/CMU-Blockchain-Group/rust-workshop-0
[INFO] tweaked toml for git repo https://github.com/CMU-Blockchain-Group/rust-workshop-0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/CMU-Blockchain-Group/rust-workshop-0 on toolchain 9f93af291970322f4f1c6315ccde4d7078201159
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/CMU-Blockchain-Group/rust-workshop-0 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" "+9f93af291970322f4f1c6315ccde4d7078201159" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 28993856cbca5c52a6a70eb07a309486a154caafa73f30e69991d098aa6b64dc
[INFO] running `Command { std: "docker" "start" "-a" "28993856cbca5c52a6a70eb07a309486a154caafa73f30e69991d098aa6b64dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "28993856cbca5c52a6a70eb07a309486a154caafa73f30e69991d098aa6b64dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28993856cbca5c52a6a70eb07a309486a154caafa73f30e69991d098aa6b64dc", kill_on_drop: false }`
[INFO] [stdout] 28993856cbca5c52a6a70eb07a309486a154caafa73f30e69991d098aa6b64dc
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ca3e0dab01cdf3c5f2a941c137499278e7dd104a0004a4045abfabe7920982da
[INFO] running `Command { std: "docker" "start" "-a" "ca3e0dab01cdf3c5f2a941c137499278e7dd104a0004a4045abfabe7920982da", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-workshop-0 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]  --> src/exercises.rs:3:18
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn swap_two_ints(a: &mut i32, b: &mut i32) {
[INFO] [stdout]   |                  ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]  --> src/exercises.rs:3:31
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn swap_two_ints(a: &mut i32, b: &mut i32) {
[INFO] [stdout]   |                               ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/exercises.rs:14:18
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn rect_overlaps(a: &Rectangle, b: &Rectangle) -> bool {
[INFO] [stdout]    |                  ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/exercises.rs:14:33
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn rect_overlaps(a: &Rectangle, b: &Rectangle) -> bool {
[INFO] [stdout]    |                                 ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `play`
[INFO] [stdout]   --> src/exercises.rs:27:17
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn rps_weakness(play: RockPaperScissors) -> RockPaperScissors {
[INFO] [stdout]    |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_play`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/exercises.rs:34:16
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn dot_product(a: &[i32], b: &[i32]) -> i32 {
[INFO] [stdout]    |                ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/exercises.rs:34:27
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn dot_product(a: &[i32], b: &[i32]) -> i32 {
[INFO] [stdout]    |                           ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/exercises.rs:40:16
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn first_n_fib(n: usize) -> Vec<u32> {
[INFO] [stdout]    |                ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/exercises.rs:48:28
[INFO] [stdout]    |
[INFO] [stdout] 48 | fn recursive_binary_search(a: &[i32]) -> Option<usize> {
[INFO] [stdout]    |                            ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `strs`
[INFO] [stdout]   --> src/exercises.rs:55:28
[INFO] [stdout]    |
[INFO] [stdout] 55 | fn flatten_slice_of_slices(strs: &[&[&str]]) -> String {
[INFO] [stdout]    |                            ^^^^ help: if this is intentional, prefix it with an underscore: `_strs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]   --> src/main.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let buf = string_to_mine.as_bytes();
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `DIFFICULTY` is never used
[INFO] [stdout]  --> src/main.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 | const DIFFICULTY: usize = 4;
[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 `swap_two_ints` is never used
[INFO] [stdout]  --> src/exercises.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn swap_two_ints(a: &mut i32, b: &mut i32) {
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]  --> src/exercises.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct Rectangle {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `rect_overlaps` is never used
[INFO] [stdout]   --> src/exercises.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn rect_overlaps(a: &Rectangle, b: &Rectangle) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `RockPaperScissors` is never used
[INFO] [stdout]   --> src/exercises.rs:19:6
[INFO] [stdout]    |
[INFO] [stdout] 19 | enum RockPaperScissors {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `rps_weakness` is never used
[INFO] [stdout]   --> src/exercises.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn rps_weakness(play: RockPaperScissors) -> RockPaperScissors {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dot_product` is never used
[INFO] [stdout]   --> src/exercises.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn dot_product(a: &[i32], b: &[i32]) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `first_n_fib` is never used
[INFO] [stdout]   --> src/exercises.rs:40:4
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn first_n_fib(n: usize) -> Vec<u32> {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `recursive_binary_search` is never used
[INFO] [stdout]   --> src/exercises.rs:48:4
[INFO] [stdout]    |
[INFO] [stdout] 48 | fn recursive_binary_search(a: &[i32]) -> Option<usize> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `flatten_slice_of_slices` is never used
[INFO] [stdout]   --> src/exercises.rs:55:4
[INFO] [stdout]    |
[INFO] [stdout] 55 | fn flatten_slice_of_slices(strs: &[&[&str]]) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "ca3e0dab01cdf3c5f2a941c137499278e7dd104a0004a4045abfabe7920982da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca3e0dab01cdf3c5f2a941c137499278e7dd104a0004a4045abfabe7920982da", kill_on_drop: false }`
[INFO] [stdout] ca3e0dab01cdf3c5f2a941c137499278e7dd104a0004a4045abfabe7920982da
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ce07a0ffa0f91e13a50418adcdf193317586fd7c0608f40f23781448041a1992
[INFO] running `Command { std: "docker" "start" "-a" "ce07a0ffa0f91e13a50418adcdf193317586fd7c0608f40f23781448041a1992", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-workshop-0 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]  --> src/exercises.rs:3:18
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn swap_two_ints(a: &mut i32, b: &mut i32) {
[INFO] [stdout]   |                  ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]  --> src/exercises.rs:3:31
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn swap_two_ints(a: &mut i32, b: &mut i32) {
[INFO] [stdout]   |                               ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/exercises.rs:14:18
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn rect_overlaps(a: &Rectangle, b: &Rectangle) -> bool {
[INFO] [stdout]    |                  ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/exercises.rs:14:33
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn rect_overlaps(a: &Rectangle, b: &Rectangle) -> bool {
[INFO] [stdout]    |                                 ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `play`
[INFO] [stdout]   --> src/exercises.rs:27:17
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn rps_weakness(play: RockPaperScissors) -> RockPaperScissors {
[INFO] [stdout]    |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_play`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/exercises.rs:34:16
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn dot_product(a: &[i32], b: &[i32]) -> i32 {
[INFO] [stdout]    |                ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/exercises.rs:34:27
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn dot_product(a: &[i32], b: &[i32]) -> i32 {
[INFO] [stdout]    |                           ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/exercises.rs:40:16
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn first_n_fib(n: usize) -> Vec<u32> {
[INFO] [stdout]    |                ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/exercises.rs:48:28
[INFO] [stdout]    |
[INFO] [stdout] 48 | fn recursive_binary_search(a: &[i32]) -> Option<usize> {
[INFO] [stdout]    |                            ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `strs`
[INFO] [stdout]   --> src/exercises.rs:55:28
[INFO] [stdout]    |
[INFO] [stdout] 55 | fn flatten_slice_of_slices(strs: &[&[&str]]) -> String {
[INFO] [stdout]    |                            ^^^^ help: if this is intentional, prefix it with an underscore: `_strs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]   --> src/main.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let buf = string_to_mine.as_bytes();
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `DIFFICULTY` is never used
[INFO] [stdout]  --> src/main.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 | const DIFFICULTY: usize = 4;
[INFO] [stdout]   |       ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]  --> src/exercises.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct Rectangle {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `rect_overlaps` is never used
[INFO] [stdout]   --> src/exercises.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn rect_overlaps(a: &Rectangle, b: &Rectangle) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `RockPaperScissors` is never used
[INFO] [stdout]   --> src/exercises.rs:19:6
[INFO] [stdout]    |
[INFO] [stdout] 19 | enum RockPaperScissors {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `rps_weakness` is never used
[INFO] [stdout]   --> src/exercises.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn rps_weakness(play: RockPaperScissors) -> RockPaperScissors {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dot_product` is never used
[INFO] [stdout]   --> src/exercises.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn dot_product(a: &[i32], b: &[i32]) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `first_n_fib` is never used
[INFO] [stdout]   --> src/exercises.rs:40:4
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn first_n_fib(n: usize) -> Vec<u32> {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `recursive_binary_search` is never used
[INFO] [stdout]   --> src/exercises.rs:48:4
[INFO] [stdout]    |
[INFO] [stdout] 48 | fn recursive_binary_search(a: &[i32]) -> Option<usize> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `flatten_slice_of_slices` is never used
[INFO] [stdout]   --> src/exercises.rs:55:4
[INFO] [stdout]    |
[INFO] [stdout] 55 | fn flatten_slice_of_slices(strs: &[&[&str]]) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `Command { std: "docker" "inspect" "ce07a0ffa0f91e13a50418adcdf193317586fd7c0608f40f23781448041a1992", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce07a0ffa0f91e13a50418adcdf193317586fd7c0608f40f23781448041a1992", kill_on_drop: false }`
[INFO] [stdout] ce07a0ffa0f91e13a50418adcdf193317586fd7c0608f40f23781448041a1992
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b7de38a0b003e9bbb47b82f328429b3753dd46b8467f3b98bc85943c3bc112d6
[INFO] running `Command { std: "docker" "start" "-a" "b7de38a0b003e9bbb47b82f328429b3753dd46b8467f3b98bc85943c3bc112d6", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]  --> src/exercises.rs:3:18
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn swap_two_ints(a: &mut i32, b: &mut i32) {
[INFO] [stderr]   |                  ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]  --> src/exercises.rs:3:31
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn swap_two_ints(a: &mut i32, b: &mut i32) {
[INFO] [stderr]   |                               ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]   --> src/exercises.rs:14:18
[INFO] [stderr]    |
[INFO] [stderr] 14 | fn rect_overlaps(a: &Rectangle, b: &Rectangle) -> bool {
[INFO] [stderr]    |                  ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]   --> src/exercises.rs:14:33
[INFO] [stderr]    |
[INFO] [stderr] 14 | fn rect_overlaps(a: &Rectangle, b: &Rectangle) -> bool {
[INFO] [stderr]    |                                 ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `play`
[INFO] [stderr]   --> src/exercises.rs:27:17
[INFO] [stderr]    |
[INFO] [stderr] 27 | fn rps_weakness(play: RockPaperScissors) -> RockPaperScissors {
[INFO] [stderr]    |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_play`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]   --> src/exercises.rs:34:16
[INFO] [stderr]    |
[INFO] [stderr] 34 | fn dot_product(a: &[i32], b: &[i32]) -> i32 {
[INFO] [stderr]    |                ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]   --> src/exercises.rs:34:27
[INFO] [stderr]    |
[INFO] [stderr] 34 | fn dot_product(a: &[i32], b: &[i32]) -> i32 {
[INFO] [stderr]    |                           ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]   --> src/exercises.rs:40:16
[INFO] [stderr]    |
[INFO] [stderr] 40 | fn first_n_fib(n: usize) -> Vec<u32> {
[INFO] [stderr]    |                ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]   --> src/exercises.rs:48:28
[INFO] [stderr]    |
[INFO] [stderr] 48 | fn recursive_binary_search(a: &[i32]) -> Option<usize> {
[INFO] [stderr]    |                            ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `strs`
[INFO] [stderr]   --> src/exercises.rs:55:28
[INFO] [stderr]    |
[INFO] [stderr] 55 | fn flatten_slice_of_slices(strs: &[&[&str]]) -> String {
[INFO] [stderr]    |                            ^^^^ help: if this is intentional, prefix it with an underscore: `_strs`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `buf`
[INFO] [stderr]   --> src/main.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |     let buf = string_to_mine.as_bytes();
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stderr] 
[INFO] [stderr] warning: constant `DIFFICULTY` is never used
[INFO] [stderr]  --> src/main.rs:4:7
[INFO] [stderr]   |
[INFO] [stderr] 4 | const DIFFICULTY: usize = 4;
[INFO] [stderr]   |       ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Rectangle` is never constructed
[INFO] [stderr]  --> src/exercises.rs:8:8
[INFO] [stderr]   |
[INFO] [stderr] 8 | struct Rectangle {
[INFO] [stderr]   |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `rect_overlaps` is never used
[INFO] [stderr]   --> src/exercises.rs:14:4
[INFO] [stderr]    |
[INFO] [stderr] 14 | fn rect_overlaps(a: &Rectangle, b: &Rectangle) -> bool {
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `RockPaperScissors` is never used
[INFO] [stderr]   --> src/exercises.rs:19:6
[INFO] [stderr]    |
[INFO] [stderr] 19 | enum RockPaperScissors {
[INFO] [stderr]    |      ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `rps_weakness` is never used
[INFO] [stderr]   --> src/exercises.rs:27:4
[INFO] [stderr]    |
[INFO] [stderr] 27 | fn rps_weakness(play: RockPaperScissors) -> RockPaperScissors {
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `dot_product` is never used
[INFO] [stderr]   --> src/exercises.rs:34:4
[INFO] [stderr]    |
[INFO] [stderr] 34 | fn dot_product(a: &[i32], b: &[i32]) -> i32 {
[INFO] [stderr]    |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `first_n_fib` is never used
[INFO] [stderr]   --> src/exercises.rs:40:4
[INFO] [stderr]    |
[INFO] [stderr] 40 | fn first_n_fib(n: usize) -> Vec<u32> {
[INFO] [stderr]    |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `recursive_binary_search` is never used
[INFO] [stderr]   --> src/exercises.rs:48:4
[INFO] [stderr]    |
[INFO] [stderr] 48 | fn recursive_binary_search(a: &[i32]) -> Option<usize> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `flatten_slice_of_slices` is never used
[INFO] [stderr]   --> src/exercises.rs:55:4
[INFO] [stderr]    |
[INFO] [stderr] 55 | fn flatten_slice_of_slices(strs: &[&[&str]]) -> String {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-workshop-0` (bin "rust-workshop-0" test) generated 20 warnings (run `cargo fix --bin "rust-workshop-0" -p rust-workshop-0 --tests` to apply 11 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_workshop_0-08c291ea81b4f17c)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr] error: test failed, to rerun pass `--bin rust-workshop-0`
[INFO] [stdout] test exercises::tests::test_swap_two_ints ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- exercises::tests::test_swap_two_ints stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'exercises::tests::test_swap_two_ints' (17) panicked at src/exercises.rs:5:5:
[INFO] [stdout] not implemented
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x59663bfa0c62 - std::backtrace_rs::backtrace::libunwind::trace::h16affffe904e891e
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x59663bfa0c62 - std::backtrace_rs::backtrace::trace_unsynchronized::h5c14b13373ed4150
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x59663bfa0c62 - std::sys::backtrace::_print_fmt::hcbb507f162c816cc
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x59663bfa0c62 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h8be9aa933f14675f
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x59663bfb0a9f - core::fmt::rt::Argument::fmt::h30ed739d33467c3a
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x59663bfb0a9f - core::fmt::write::hfd0efbb002ac7eea
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/fmt/mod.rs:1469:25
[INFO] [stdout]    6:     0x59663bf6e733 - std::io::default_write_fmt::hd6d24501f2d7f8d3
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x59663bf6e733 - std::io::Write::write_fmt::h79eca2f72fc24111
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x59663bf7a4d2 - std::sys::backtrace::BacktraceLock::print::hf2554f6030d393f7
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x59663bf7efaf - std::panicking::default_hook::{{closure}}::h8873121c56335b01
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x59663bf7ee41 - std::panicking::default_hook::hbafefc2d196267a2
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x59663bf4200e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::ha834d5846f91b30b
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   12:     0x59663bf4200e - test::test_main_with_exit_callback::{{closure}}::h63c167737eecb025
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x59663bf7f5bf - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hbf9b0f7a281291fd
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   14:     0x59663bf7f5bf - std::panicking::panic_with_hook::h9f5b09d5adc1a745
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x59663bf7f3e6 - std::panicking::panic_handler::{{closure}}::h08111e483bdf6a89
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:700:13
[INFO] [stdout]   16:     0x59663bf7a609 - std::sys::backtrace::__rust_end_short_backtrace::h1b86e3414ecbbe8d
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x59663bf62efd - __rustc[b292c645e8102103]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x59663bfb81e0 - core::panicking::panic_fmt::h31cc490ecc8cc1fa
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x59663bfb81bc - core::panicking::panic::h5cbcc2ceb0950681
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/panicking.rs:150:5
[INFO] [stdout]   20:     0x59663bf20a27 - rust_workshop_0::exercises::swap_two_ints::h2218fba6223d5802
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercises.rs:5:2
[INFO] [stdout]   21:     0x59663bf20a53 - rust_workshop_0::exercises::tests::test_swap_two_ints::hccf81c00e6592213
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercises.rs:68:3
[INFO] [stdout]   22:     0x59663bf20b17 - rust_workshop_0::exercises::tests::test_swap_two_ints::{{closure}}::he6d65a1a0f15441f
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercises.rs:65:25
[INFO] [stdout]   23:     0x59663bf20c66 - core::ops::function::FnOnce::call_once::ha7448255098896ab
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x59663bf41e0b - core::ops::function::FnOnce::call_once::h2b2de5fdd23aab3e
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x59663bf41e0b - test::__rust_begin_short_backtrace::he551dd004770be01
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:663:18
[INFO] [stdout]   26:     0x59663bf55e6d - test::run_test_in_process::{{closure}}::h5f0b44080a35ed87
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:686:74
[INFO] [stdout]   27:     0x59663bf55e6d - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4dbf65d14893ecf5
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28:     0x59663bf55e6d - std::panicking::catch_unwind::do_call::hc37c563b8a006285
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:590:40
[INFO] [stdout]   29:     0x59663bf55e6d - std::panicking::catch_unwind::h616b6e2e7a27f612
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:553:19
[INFO] [stdout]   30:     0x59663bf55e6d - std::panic::catch_unwind::h1e788dd57758e6d8
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x59663bf55e6d - test::run_test_in_process::hf073c2764f29f8ad
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:686:27
[INFO] [stdout]   32:     0x59663bf55e6d - test::run_test::{{closure}}::h3dc46b7a0c340fa6
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:607:43
[INFO] [stdout]   33:     0x59663bf2f3b4 - test::run_test::{{closure}}::h6a4da3c57ef4505f
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:637:41
[INFO] [stdout]   34:     0x59663bf2f3b4 - std::sys::backtrace::__rust_begin_short_backtrace::hfd8e44bc311a5d57
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   35:     0x59663bf32c0a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h57c4ddec344fe24c
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   36:     0x59663bf32c0a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hd7cbe09591f06dfb
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   37:     0x59663bf32c0a - std::panicking::catch_unwind::do_call::hdcd076e8e993dfbc
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:590:40
[INFO] [stdout]   38:     0x59663bf32c0a - std::panicking::catch_unwind::h8f9f675f3756eab1
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:553:19
[INFO] [stdout]   39:     0x59663bf32c0a - std::panic::catch_unwind::he8f74a93abeceb9b
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x59663bf32c0a - std::thread::Builder::spawn_unchecked_::{{closure}}::he43db13a2caa41d5
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   41:     0x59663bf32c0a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h8f3531a7e0d83514
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x59663bf75a0f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h6ff05134d80ef20e
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   43:     0x59663bf75a0f - std::sys::thread::unix::Thread::new::thread_start::h9a4a41a076a486e0
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   44:     0x7105adeb3aa4 - <unknown>
[INFO] [stdout]   45:     0x7105adf40a64 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     exercises::tests::test_swap_two_ints
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b7de38a0b003e9bbb47b82f328429b3753dd46b8467f3b98bc85943c3bc112d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7de38a0b003e9bbb47b82f328429b3753dd46b8467f3b98bc85943c3bc112d6", kill_on_drop: false }`
[INFO] [stdout] b7de38a0b003e9bbb47b82f328429b3753dd46b8467f3b98bc85943c3bc112d6
