[INFO] cloning repository https://github.com/tigerfsh/rust-code-evolution
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tigerfsh/rust-code-evolution" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftigerfsh%2Frust-code-evolution", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftigerfsh%2Frust-code-evolution'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 26c4fdc7e9c5097f5f31ea8920dea02d10bceb09
[INFO] checking tigerfsh/rust-code-evolution against try#a75eafceea413a1b40c0e0769db85e08ec17160b for pr-133925
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftigerfsh%2Frust-code-evolution" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] fatal: could not create leading directories of '/workspace/builds/worker-1-tc2/source': No space left on device
[INFO] checking tigerfsh/rust-code-evolution against try#a75eafceea413a1b40c0e0769db85e08ec17160b for pr-133925
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftigerfsh%2Frust-code-evolution" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tigerfsh/rust-code-evolution on toolchain a75eafceea413a1b40c0e0769db85e08ec17160b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a75eafceea413a1b40c0e0769db85e08ec17160b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tigerfsh/rust-code-evolution
[INFO] finished tweaking git repo https://github.com/tigerfsh/rust-code-evolution
[INFO] tweaked toml for git repo https://github.com/tigerfsh/rust-code-evolution written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/tigerfsh/rust-code-evolution 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" "+a75eafceea413a1b40c0e0769db85e08ec17160b" "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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+a75eafceea413a1b40c0e0769db85e08ec17160b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] Error response from daemon: chown /var/lib/docker/overlay2/bc7332d6534c6652740cbbed3e22eb6c04dc9f60381979d467bc85db5c372c93-init/work/work: no such file or directory
[INFO] checking tigerfsh/rust-code-evolution against try#a75eafceea413a1b40c0e0769db85e08ec17160b for pr-133925
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftigerfsh%2Frust-code-evolution" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tigerfsh/rust-code-evolution on toolchain a75eafceea413a1b40c0e0769db85e08ec17160b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a75eafceea413a1b40c0e0769db85e08ec17160b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tigerfsh/rust-code-evolution
[INFO] finished tweaking git repo https://github.com/tigerfsh/rust-code-evolution
[INFO] tweaked toml for git repo https://github.com/tigerfsh/rust-code-evolution written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/tigerfsh/rust-code-evolution 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" "+a75eafceea413a1b40c0e0769db85e08ec17160b" "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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+a75eafceea413a1b40c0e0769db85e08ec17160b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] Error response from daemon: write /var/lib/docker/overlay2/75d5b5371f917e070c90ecb4a37f9d40811e4f916e785b85ecaed40856630df4-init/.tmp-lower2864746063: no space left on device
[INFO] checking tigerfsh/rust-code-evolution against try#a75eafceea413a1b40c0e0769db85e08ec17160b for pr-133925
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftigerfsh%2Frust-code-evolution" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tigerfsh/rust-code-evolution on toolchain a75eafceea413a1b40c0e0769db85e08ec17160b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a75eafceea413a1b40c0e0769db85e08ec17160b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tigerfsh/rust-code-evolution
[INFO] finished tweaking git repo https://github.com/tigerfsh/rust-code-evolution
[INFO] tweaked toml for git repo https://github.com/tigerfsh/rust-code-evolution written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/tigerfsh/rust-code-evolution 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" "+a75eafceea413a1b40c0e0769db85e08ec17160b" "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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+a75eafceea413a1b40c0e0769db85e08ec17160b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6aba84da37c1fa986c7f817e50ab860881bc1e7098a5a474aa48f1ac5a422a9a
[INFO] running `Command { std: "docker" "start" "-a" "6aba84da37c1fa986c7f817e50ab860881bc1e7098a5a474aa48f1ac5a422a9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6aba84da37c1fa986c7f817e50ab860881bc1e7098a5a474aa48f1ac5a422a9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6aba84da37c1fa986c7f817e50ab860881bc1e7098a5a474aa48f1ac5a422a9a", kill_on_drop: false }`
[INFO] [stdout] 6aba84da37c1fa986c7f817e50ab860881bc1e7098a5a474aa48f1ac5a422a9a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+a75eafceea413a1b40c0e0769db85e08ec17160b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 756b39092186141d6f3556d99282c0f35609524104f66a55e1f1950d24bfa856
[INFO] running `Command { std: "docker" "start" "-a" "756b39092186141d6f3556d99282c0f35609524104f66a55e1f1950d24bfa856", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-code-evolution v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `read_file_v1` is never used
[INFO] [stdout]   --> src/lib.rs:49:4
[INFO] [stdout]    |
[INFO] [stdout] 49 | fn read_file_v1(file_path: &str) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_file_v2` is never used
[INFO] [stdout]   --> src/lib.rs:54:4
[INFO] [stdout]    |
[INFO] [stdout] 54 | fn read_file_v2(file_path: &str) -> io::Result<String> {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_item_v1` is never used
[INFO] [stdout]   --> src/lib.rs:59:4
[INFO] [stdout]    |
[INFO] [stdout] 59 | fn find_item_v1(items: &[i32], target: i32) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_file_v1` is never used
[INFO] [stdout]   --> src/lib.rs:49:4
[INFO] [stdout]    |
[INFO] [stdout] 49 | fn read_file_v1(file_path: &str) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_one_to_option_v1` is never used
[INFO] [stdout]   --> src/lib.rs:74:4
[INFO] [stdout]    |
[INFO] [stdout] 74 | fn add_one_to_option_v1(option: Option<i32>) -> Option<i32> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `set_default_if_none_v1` is never used
[INFO] [stdout]    --> src/lib.rs:124:4
[INFO] [stdout]     |
[INFO] [stdout] 124 | fn set_default_if_none_v1(option: Option<i32>) -> i32 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `set_default_if_none_v2` is never used
[INFO] [stdout]    --> src/lib.rs:131:4
[INFO] [stdout]     |
[INFO] [stdout] 131 | fn set_default_if_none_v2(option: Option<i32>) -> i32 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_file_v2` is never used
[INFO] [stdout]   --> src/lib.rs:54:4
[INFO] [stdout]    |
[INFO] [stdout] 54 | fn read_file_v2(file_path: &str) -> io::Result<String> {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_item_v1` is never used
[INFO] [stdout]   --> src/lib.rs:59:4
[INFO] [stdout]    |
[INFO] [stdout] 59 | fn find_item_v1(items: &[i32], target: i32) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `my_if_let` is never used
[INFO] [stdout]    --> src/lib.rs:151:4
[INFO] [stdout]     |
[INFO] [stdout] 151 | fn my_if_let() {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Shape` is never used
[INFO] [stdout]    --> src/lib.rs:161:7
[INFO] [stdout]     |
[INFO] [stdout] 161 | trait Shape {
[INFO] [stdout]     |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_one_to_option_v1` is never used
[INFO] [stdout]   --> src/lib.rs:74:4
[INFO] [stdout]    |
[INFO] [stdout] 74 | fn add_one_to_option_v1(option: Option<i32>) -> Option<i32> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `compare_areas_v1` is never used
[INFO] [stdout]    --> src/lib.rs:166:4
[INFO] [stdout]     |
[INFO] [stdout] 166 | fn compare_areas_v1(shape1: &impl Shape, shape2: &impl Shape) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `compare_areas_v2` is never used
[INFO] [stdout]    --> src/lib.rs:173:4
[INFO] [stdout]     |
[INFO] [stdout] 173 | fn compare_areas_v2<T: Shape>(shape1: &T, shape2: &T) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `set_default_if_none_v1` is never used
[INFO] [stdout]    --> src/lib.rs:124:4
[INFO] [stdout]     |
[INFO] [stdout] 124 | fn set_default_if_none_v1(option: Option<i32>) -> i32 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calculate_length_v1` is never used
[INFO] [stdout]    --> src/lib.rs:179:4
[INFO] [stdout]     |
[INFO] [stdout] 179 | fn calculate_length_v1(s: &String) -> usize {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `set_default_if_none_v2` is never used
[INFO] [stdout]    --> src/lib.rs:131:4
[INFO] [stdout]     |
[INFO] [stdout] 131 | fn set_default_if_none_v2(option: Option<i32>) -> i32 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calculate_length_v2` is never used
[INFO] [stdout]    --> src/lib.rs:183:4
[INFO] [stdout]     |
[INFO] [stdout] 183 | fn calculate_length_v2(s: &str) -> usize {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `my_if_let` is never used
[INFO] [stdout]    --> src/lib.rs:151:4
[INFO] [stdout]     |
[INFO] [stdout] 151 | fn my_if_let() {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_even_v1` is never used
[INFO] [stdout]    --> src/lib.rs:191:4
[INFO] [stdout]     |
[INFO] [stdout] 191 | fn is_even_v1(num: i32) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Shape` is never used
[INFO] [stdout]    --> src/lib.rs:161:7
[INFO] [stdout]     |
[INFO] [stdout] 161 | trait Shape {
[INFO] [stdout]     |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_even_v2` is never used
[INFO] [stdout]    --> src/lib.rs:199:4
[INFO] [stdout]     |
[INFO] [stdout] 199 | fn is_even_v2(num: i32) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `compare_areas_v1` is never used
[INFO] [stdout]    --> src/lib.rs:166:4
[INFO] [stdout]     |
[INFO] [stdout] 166 | fn compare_areas_v1(shape1: &impl Shape, shape2: &impl Shape) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `square_v1` is never used
[INFO] [stdout]    --> src/lib.rs:203:4
[INFO] [stdout]     |
[INFO] [stdout] 203 | fn square_v1(num: i32) -> i32 {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `compare_areas_v2` is never used
[INFO] [stdout]    --> src/lib.rs:173:4
[INFO] [stdout]     |
[INFO] [stdout] 173 | fn compare_areas_v2<T: Shape>(shape1: &T, shape2: &T) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `positive_v1` is never used
[INFO] [stdout]    --> src/lib.rs:207:4
[INFO] [stdout]     |
[INFO] [stdout] 207 | fn positive_v1(n: i32) -> Option<i32> {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calculate_length_v1` is never used
[INFO] [stdout]    --> src/lib.rs:179:4
[INFO] [stdout]     |
[INFO] [stdout] 179 | fn calculate_length_v1(s: &String) -> usize {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `positive_v2` is never used
[INFO] [stdout]    --> src/lib.rs:215:4
[INFO] [stdout]     |
[INFO] [stdout] 215 | fn positive_v2(n: i32) -> Option<i32> {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calculate_length_v2` is never used
[INFO] [stdout]    --> src/lib.rs:183:4
[INFO] [stdout]     |
[INFO] [stdout] 183 | fn calculate_length_v2(s: &str) -> usize {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_even_v1` is never used
[INFO] [stdout]    --> src/lib.rs:191:4
[INFO] [stdout]     |
[INFO] [stdout] 191 | fn is_even_v1(num: i32) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_even_v2` is never used
[INFO] [stdout]    --> src/lib.rs:199:4
[INFO] [stdout]     |
[INFO] [stdout] 199 | fn is_even_v2(num: i32) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `square_v1` is never used
[INFO] [stdout]    --> src/lib.rs:203:4
[INFO] [stdout]     |
[INFO] [stdout] 203 | fn square_v1(num: i32) -> i32 {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `positive_v1` is never used
[INFO] [stdout]    --> src/lib.rs:207:4
[INFO] [stdout]     |
[INFO] [stdout] 207 | fn positive_v1(n: i32) -> Option<i32> {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `positive_v2` is never used
[INFO] [stdout]    --> src/lib.rs:215:4
[INFO] [stdout]     |
[INFO] [stdout] 215 | fn positive_v2(n: i32) -> Option<i32> {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `square`
[INFO] [stdout]   --> src/main.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let square = |num: i32| num * num;
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_square`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `square`
[INFO] [stdout]   --> src/main.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let square = |num: i32| num * num;
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_square`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.17s
[INFO] running `Command { std: "docker" "inspect" "756b39092186141d6f3556d99282c0f35609524104f66a55e1f1950d24bfa856", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "756b39092186141d6f3556d99282c0f35609524104f66a55e1f1950d24bfa856", kill_on_drop: false }`
[INFO] [stdout] 756b39092186141d6f3556d99282c0f35609524104f66a55e1f1950d24bfa856