[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] testing tigerfsh/rust-code-evolution against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftigerfsh%2Frust-code-evolution" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[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-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tigerfsh/rust-code-evolution on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "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-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e230f7d75f50328950916629fa78b68ae6b4301a42c6ff03cfff16379044732f
[INFO] running `Command { std: "docker" "start" "-a" "e230f7d75f50328950916629fa78b68ae6b4301a42c6ff03cfff16379044732f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e230f7d75f50328950916629fa78b68ae6b4301a42c6ff03cfff16379044732f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e230f7d75f50328950916629fa78b68ae6b4301a42c6ff03cfff16379044732f", kill_on_drop: false }`
[INFO] [stdout] e230f7d75f50328950916629fa78b68ae6b4301a42c6ff03cfff16379044732f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 73cff59e47ce747327a0fa6bda33653f70c03a5006657ed9f99169d1d1030c35
[INFO] running `Command { std: "docker" "start" "-a" "73cff59e47ce747327a0fa6bda33653f70c03a5006657ed9f99169d1d1030c35", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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)]` (part of `#[warn(unused)]`) 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 `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 `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 `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 `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 `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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `Command { std: "docker" "inspect" "73cff59e47ce747327a0fa6bda33653f70c03a5006657ed9f99169d1d1030c35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73cff59e47ce747327a0fa6bda33653f70c03a5006657ed9f99169d1d1030c35", kill_on_drop: false }`
[INFO] [stdout] 73cff59e47ce747327a0fa6bda33653f70c03a5006657ed9f99169d1d1030c35
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 15281af9efd4753c554398fa3e2bb9563e0bc0ba4c541479748f122f75688903
[INFO] running `Command { std: "docker" "start" "-a" "15281af9efd4753c554398fa3e2bb9563e0bc0ba4c541479748f122f75688903", kill_on_drop: false }`
[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)]` (part of `#[warn(unused)]`) 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 `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 `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 `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] [stderr]    Compiling rust-code-evolution v0.1.0 (/opt/rustwide/workdir)
[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 `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)]` (part of `#[warn(unused)]`) on by default
[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)]` (part of `#[warn(unused)]`) 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 `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 `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 `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 `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 `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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `Command { std: "docker" "inspect" "15281af9efd4753c554398fa3e2bb9563e0bc0ba4c541479748f122f75688903", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15281af9efd4753c554398fa3e2bb9563e0bc0ba4c541479748f122f75688903", kill_on_drop: false }`
[INFO] [stdout] 15281af9efd4753c554398fa3e2bb9563e0bc0ba4c541479748f122f75688903
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 23007fa86494b23ed6bf015238181dbe5bb5ec8374fa1a51be15449b7d84867f
[INFO] running `Command { std: "docker" "start" "-a" "23007fa86494b23ed6bf015238181dbe5bb5ec8374fa1a51be15449b7d84867f", kill_on_drop: false }`
[INFO] [stderr] warning: function `read_file_v1` is never used
[INFO] [stderr]   --> src/lib.rs:49:4
[INFO] [stderr]    |
[INFO] [stderr] 49 | fn read_file_v1(file_path: &str) -> String {
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `read_file_v2` is never used
[INFO] [stderr]   --> src/lib.rs:54:4
[INFO] [stderr]    |
[INFO] [stderr] 54 | fn read_file_v2(file_path: &str) -> io::Result<String> {
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `find_item_v1` is never used
[INFO] [stderr]   --> src/lib.rs:59:4
[INFO] [stderr]    |
[INFO] [stderr] 59 | fn find_item_v1(items: &[i32], target: i32) -> i32 {
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `add_one_to_option_v1` is never used
[INFO] [stderr]   --> src/lib.rs:74:4
[INFO] [stderr]    |
[INFO] [stderr] 74 | fn add_one_to_option_v1(option: Option<i32>) -> Option<i32> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `set_default_if_none_v1` is never used
[INFO] [stderr]    --> src/lib.rs:124:4
[INFO] [stderr]     |
[INFO] [stderr] 124 | fn set_default_if_none_v1(option: Option<i32>) -> i32 {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `set_default_if_none_v2` is never used
[INFO] [stderr]    --> src/lib.rs:131:4
[INFO] [stderr]     |
[INFO] [stderr] 131 | fn set_default_if_none_v2(option: Option<i32>) -> i32 {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `my_if_let` is never used
[INFO] [stderr]    --> src/lib.rs:151:4
[INFO] [stderr]     |
[INFO] [stderr] 151 | fn my_if_let() {
[INFO] [stderr]     |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait `Shape` is never used
[INFO] [stderr]    --> src/lib.rs:161:7
[INFO] [stderr]     |
[INFO] [stderr] 161 | trait Shape {
[INFO] [stderr]     |       ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `compare_areas_v1` is never used
[INFO] [stderr]    --> src/lib.rs:166:4
[INFO] [stderr]     |
[INFO] [stderr] 166 | fn compare_areas_v1(shape1: &impl Shape, shape2: &impl Shape) {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `compare_areas_v2` is never used
[INFO] [stderr]    --> src/lib.rs:173:4
[INFO] [stderr]     |
[INFO] [stderr] 173 | fn compare_areas_v2<T: Shape>(shape1: &T, shape2: &T) {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `calculate_length_v1` is never used
[INFO] [stderr]    --> src/lib.rs:179:4
[INFO] [stderr]     |
[INFO] [stderr] 179 | fn calculate_length_v1(s: &String) -> usize {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `calculate_length_v2` is never used
[INFO] [stderr]    --> src/lib.rs:183:4
[INFO] [stderr]     |
[INFO] [stderr] 183 | fn calculate_length_v2(s: &str) -> usize {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `is_even_v1` is never used
[INFO] [stderr]    --> src/lib.rs:191:4
[INFO] [stderr]     |
[INFO] [stderr] 191 | fn is_even_v1(num: i32) -> bool {
[INFO] [stderr]     |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `is_even_v2` is never used
[INFO] [stderr]    --> src/lib.rs:199:4
[INFO] [stderr]     |
[INFO] [stderr] 199 | fn is_even_v2(num: i32) -> bool {
[INFO] [stderr]     |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `square_v1` is never used
[INFO] [stderr]    --> src/lib.rs:203:4
[INFO] [stderr]     |
[INFO] [stderr] 203 | fn square_v1(num: i32) -> i32 {
[INFO] [stderr]     |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `positive_v1` is never used
[INFO] [stderr]    --> src/lib.rs:207:4
[INFO] [stderr]     |
[INFO] [stderr] 207 | fn positive_v1(n: i32) -> Option<i32> {
[INFO] [stderr]     |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `positive_v2` is never used
[INFO] [stderr]    --> src/lib.rs:215:4
[INFO] [stderr]     |
[INFO] [stderr] 215 | fn positive_v2(n: i32) -> Option<i32> {
[INFO] [stderr]     |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-code-evolution` (lib) generated 17 warnings
[INFO] [stderr] warning: unused variable: `square`
[INFO] [stderr]   --> src/main.rs:41:9
[INFO] [stderr]    |
[INFO] [stderr] 41 |     let square = |num: i32| num * num;
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_square`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-code-evolution` (bin "rust-code-evolution") generated 1 warning
[INFO] [stderr] warning: `rust-code-evolution` (bin "rust-code-evolution" test) generated 1 warning (1 duplicate)
[INFO] [stderr] warning: `rust-code-evolution` (lib test) generated 17 warnings (17 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rust_code_evolution-e979631986cdb35a)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_code_evolution-bdf5eefbf592a2c9)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/as_ref_test.rs (/opt/rustwide/target/debug/deps/as_ref_test-91a98bb937f0ec1b)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test calculate_length ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/factorial_test.rs (/opt/rustwide/target/debug/deps/factorial_test-05992d12cba2992a)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test factorial ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/fibonacci_test.rs (/opt/rustwide/target/debug/deps/fibonacci_test-8e2895e91feef374)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running tests/find_item_test.rs (/opt/rustwide/target/debug/deps/find_item_test-6e530d489976519c)
[INFO] [stdout] test fibonacci ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test find_item ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]      Running tests/option_map_test.rs (/opt/rustwide/target/debug/deps/option_map_test-86b45cd90d895361)
[INFO] [stdout] running 1 test
[INFO] [stdout] test add_one_to_option ... ok
[INFO] [stderr]      Running tests/sum_elements_test.rs (/opt/rustwide/target/debug/deps/sum_elements_test-90178da8865c2ef5)
[INFO] [stdout] 
[INFO] [stderr]      Running tests/user_test.rs (/opt/rustwide/target/debug/deps/user_test-aad61921fd2a414c)
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test sum_elements ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test create_user ... ok
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rust_code_evolution
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "23007fa86494b23ed6bf015238181dbe5bb5ec8374fa1a51be15449b7d84867f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23007fa86494b23ed6bf015238181dbe5bb5ec8374fa1a51be15449b7d84867f", kill_on_drop: false }`
[INFO] [stdout] 23007fa86494b23ed6bf015238181dbe5bb5ec8374fa1a51be15449b7d84867f