[INFO] fetching crate bwkit 0.1.0...
[INFO] checking bwkit-0.1.0 against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1
[INFO] extracting crate bwkit 0.1.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate bwkit 0.1.0
[INFO] finished tweaking crates.io crate bwkit 0.1.0
[INFO] tweaked toml for crates.io crate bwkit 0.1.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate bwkit 0.1.0 on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate bwkit 0.1.0 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" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 267113db638720e539fab7c7622a75ef3677451f9c17f29a7943b98b645c928a
[INFO] running `Command { std: "docker" "start" "-a" "267113db638720e539fab7c7622a75ef3677451f9c17f29a7943b98b645c928a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "267113db638720e539fab7c7622a75ef3677451f9c17f29a7943b98b645c928a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "267113db638720e539fab7c7622a75ef3677451f9c17f29a7943b98b645c928a", kill_on_drop: false }`
[INFO] [stdout] 267113db638720e539fab7c7622a75ef3677451f9c17f29a7943b98b645c928a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 128500f55efbf55a06f078077f11b7cddd13b55c31db0845b53b9d5420e7c8cf
[INFO] running `Command { std: "docker" "start" "-a" "128500f55efbf55a06f078077f11b7cddd13b55c31db0845b53b9d5420e7c8cf", kill_on_drop: false }`
[INFO] [stderr]     Checking bwkit v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `reverse` is never used
[INFO] [stdout]  --> src/string_utils.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn reverse(text: &str) -> String {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `switch_case` is never used
[INFO] [stdout]  --> src/string_utils.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn switch_case(text: &str) -> String {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `stringify_value_9999` is never used
[INFO] [stdout]   --> src/string_utils.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn stringify_value_9999(value: i64) -> Option<String> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_file` is never used
[INFO] [stdout]  --> src/file_ops.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn read_file(path: &str) -> Result<String, String> {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `write_file` is never used
[INFO] [stdout]   --> src/file_ops.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn write_file(path: &str, content: &str) -> Result<(), String> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exchange_file_content` is never used
[INFO] [stdout]   --> src/file_ops.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn exchange_file_content(path_a: &str, path_b: &str) -> Result<(), String> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `filter_data` is never used
[INFO] [stdout]  --> src/data_processing.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn filter_data<T:Copy>(data: &[T], predicate: fn(T) -> bool) -> Vec<T> {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reverse` is never used
[INFO] [stdout]  --> src/string_utils.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn reverse(text: &str) -> String {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `switch_case` is never used
[INFO] [stdout]  --> src/string_utils.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn switch_case(text: &str) -> String {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `stringify_value_9999` is never used
[INFO] [stdout]   --> src/string_utils.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn stringify_value_9999(value: i64) -> Option<String> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_file` is never used
[INFO] [stdout]  --> src/file_ops.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn read_file(path: &str) -> Result<String, String> {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `write_file` is never used
[INFO] [stdout]   --> src/file_ops.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn write_file(path: &str, content: &str) -> Result<(), String> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exchange_file_content` is never used
[INFO] [stdout]   --> src/file_ops.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn exchange_file_content(path_a: &str, path_b: &str) -> Result<(), String> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `filter_data` is never used
[INFO] [stdout]  --> src/data_processing.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn filter_data<T:Copy>(data: &[T], predicate: fn(T) -> bool) -> Vec<T> {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "128500f55efbf55a06f078077f11b7cddd13b55c31db0845b53b9d5420e7c8cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "128500f55efbf55a06f078077f11b7cddd13b55c31db0845b53b9d5420e7c8cf", kill_on_drop: false }`
[INFO] [stdout] 128500f55efbf55a06f078077f11b7cddd13b55c31db0845b53b9d5420e7c8cf