[INFO] fetching crate bwkit 0.1.0...
[INFO] testing bwkit-0.1.0 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate bwkit 0.1.0 into /workspace/builds/worker-3-tc1/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-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate bwkit 0.1.0 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "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-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a1a99a085d2c916763a2b34474b0a487434daa1e67a5e1dc8500990c52972e77
[INFO] running `Command { std: "docker" "start" "-a" "a1a99a085d2c916763a2b34474b0a487434daa1e67a5e1dc8500990c52972e77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a1a99a085d2c916763a2b34474b0a487434daa1e67a5e1dc8500990c52972e77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1a99a085d2c916763a2b34474b0a487434daa1e67a5e1dc8500990c52972e77", kill_on_drop: false }`
[INFO] [stdout] a1a99a085d2c916763a2b34474b0a487434daa1e67a5e1dc8500990c52972e77
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 586da685a6d854a7752656fd4d315e820f36f4085a684204e017400a55c1ad39
[INFO] running `Command { std: "docker" "start" "-a" "586da685a6d854a7752656fd4d315e820f36f4085a684204e017400a55c1ad39", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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)]` (part of `#[warn(unused)]`) 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 0.10s
[INFO] running `Command { std: "docker" "inspect" "586da685a6d854a7752656fd4d315e820f36f4085a684204e017400a55c1ad39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "586da685a6d854a7752656fd4d315e820f36f4085a684204e017400a55c1ad39", kill_on_drop: false }`
[INFO] [stdout] 586da685a6d854a7752656fd4d315e820f36f4085a684204e017400a55c1ad39
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2204ec475d2f4f0ca3cc747d757f9cb81c96fa954b4fc8c499269b00d782be9e
[INFO] running `Command { std: "docker" "start" "-a" "2204ec475d2f4f0ca3cc747d757f9cb81c96fa954b4fc8c499269b00d782be9e", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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)]` (part of `#[warn(unused)]`) 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)]` (part of `#[warn(unused)]`) 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 `test` profile [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "2204ec475d2f4f0ca3cc747d757f9cb81c96fa954b4fc8c499269b00d782be9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2204ec475d2f4f0ca3cc747d757f9cb81c96fa954b4fc8c499269b00d782be9e", kill_on_drop: false }`
[INFO] [stdout] 2204ec475d2f4f0ca3cc747d757f9cb81c96fa954b4fc8c499269b00d782be9e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a393548b26c6b3ce05cc4d650764fbf4006cde250090286c00e0546bad957542
[INFO] running `Command { std: "docker" "start" "-a" "a393548b26c6b3ce05cc4d650764fbf4006cde250090286c00e0546bad957542", kill_on_drop: false }`
[INFO] [stderr] warning: function `reverse` is never used
[INFO] [stderr]  --> src/string_utils.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn reverse(text: &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 `switch_case` is never used
[INFO] [stderr]  --> src/string_utils.rs:8:8
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub fn switch_case(text: &str) -> String {
[INFO] [stderr]   |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `stringify_value_9999` is never used
[INFO] [stderr]   --> src/string_utils.rs:19:8
[INFO] [stderr]    |
[INFO] [stderr] 19 | pub fn stringify_value_9999(value: i64) -> Option<String> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `read_file` is never used
[INFO] [stderr]  --> src/file_ops.rs:4:8
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn read_file(path: &str) -> Result<String, String> {
[INFO] [stderr]   |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `write_file` is never used
[INFO] [stderr]   --> src/file_ops.rs:19:8
[INFO] [stderr]    |
[INFO] [stderr] 19 | pub fn write_file(path: &str, content: &str) -> Result<(), String> {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `exchange_file_content` is never used
[INFO] [stderr]   --> src/file_ops.rs:32:8
[INFO] [stderr]    |
[INFO] [stderr] 32 | pub fn exchange_file_content(path_a: &str, path_b: &str) -> Result<(), String> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `filter_data` is never used
[INFO] [stderr]  --> src/data_processing.rs:8:8
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub fn filter_data<T:Copy>(data: &[T], predicate: fn(T) -> bool) -> Vec<T> {
[INFO] [stderr]   |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `bwkit` (lib) generated 7 warnings
[INFO] [stderr] warning: `bwkit` (lib test) generated 7 warnings (7 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/bwkit-3dcd22fc3829a149)
[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]    Doc-tests bwkit
[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" "a393548b26c6b3ce05cc4d650764fbf4006cde250090286c00e0546bad957542", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a393548b26c6b3ce05cc4d650764fbf4006cde250090286c00e0546bad957542", kill_on_drop: false }`
[INFO] [stdout] a393548b26c6b3ce05cc4d650764fbf4006cde250090286c00e0546bad957542