[INFO] cloning repository https://github.com/iammadab/bit-manipulation
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/iammadab/bit-manipulation" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiammadab%2Fbit-manipulation", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiammadab%2Fbit-manipulation'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9bbe17cb1929ecbd9e535c816635bbd6ab95377f
[INFO] building iammadab/bit-manipulation against master#f77247ac59b29ce927f4d2cd1c26a4b2d1d358c9 for pr-137044-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiammadab%2Fbit-manipulation" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/iammadab/bit-manipulation on toolchain f77247ac59b29ce927f4d2cd1c26a4b2d1d358c9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f77247ac59b29ce927f4d2cd1c26a4b2d1d358c9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/iammadab/bit-manipulation
[INFO] finished tweaking git repo https://github.com/iammadab/bit-manipulation
[INFO] tweaked toml for git repo https://github.com/iammadab/bit-manipulation written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/iammadab/bit-manipulation 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" "+f77247ac59b29ce927f4d2cd1c26a4b2d1d358c9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+f77247ac59b29ce927f4d2cd1c26a4b2d1d358c9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7cfbb4d8f3f03c59689f77a712fc33b2ec9bea5dd4d1ff588cdc05d104b196eb
[INFO] running `Command { std: "docker" "start" "-a" "7cfbb4d8f3f03c59689f77a712fc33b2ec9bea5dd4d1ff588cdc05d104b196eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7cfbb4d8f3f03c59689f77a712fc33b2ec9bea5dd4d1ff588cdc05d104b196eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7cfbb4d8f3f03c59689f77a712fc33b2ec9bea5dd4d1ff588cdc05d104b196eb", kill_on_drop: false }`
[INFO] [stdout] 7cfbb4d8f3f03c59689f77a712fc33b2ec9bea5dd4d1ff588cdc05d104b196eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+f77247ac59b29ce927f4d2cd1c26a4b2d1d358c9" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fc4305fc3360b38d57daf836e23c87507881948e4901bc8ee2298e660a6b08a7
[INFO] running `Command { std: "docker" "start" "-a" "fc4305fc3360b38d57daf836e23c87507881948e4901bc8ee2298e660a6b08a7", kill_on_drop: false }`
[INFO] [stderr]    Compiling bit-manipulation v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `bit_rep` is never used
[INFO] [stdout]   --> src/lib.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn bit_rep(value: u32) -> String {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `u32_bit` is never used
[INFO] [stdout]   --> src/lib.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn u32_bit(bit_string: &str) -> u32 {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "fc4305fc3360b38d57daf836e23c87507881948e4901bc8ee2298e660a6b08a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc4305fc3360b38d57daf836e23c87507881948e4901bc8ee2298e660a6b08a7", kill_on_drop: false }`
[INFO] [stdout] fc4305fc3360b38d57daf836e23c87507881948e4901bc8ee2298e660a6b08a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+f77247ac59b29ce927f4d2cd1c26a4b2d1d358c9" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 945502e660c0d22a49198a1b855ad7f40c542c8ab68adf76520638e59952dc68
[INFO] running `Command { std: "docker" "start" "-a" "945502e660c0d22a49198a1b855ad7f40c542c8ab68adf76520638e59952dc68", kill_on_drop: false }`
[INFO] [stdout] warning: function `bit_rep` is never used
[INFO] [stdout]   --> src/lib.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn bit_rep(value: u32) -> String {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `u32_bit` is never used
[INFO] [stdout]   --> src/lib.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn u32_bit(bit_string: &str) -> u32 {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling bit-manipulation v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `bit_rep` is never used
[INFO] [stdout]   --> src/lib.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn bit_rep(value: u32) -> String {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `Command { std: "docker" "inspect" "945502e660c0d22a49198a1b855ad7f40c542c8ab68adf76520638e59952dc68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "945502e660c0d22a49198a1b855ad7f40c542c8ab68adf76520638e59952dc68", kill_on_drop: false }`
[INFO] [stdout] 945502e660c0d22a49198a1b855ad7f40c542c8ab68adf76520638e59952dc68