[INFO] cloning repository https://github.com/Socksonme/rust_sandbox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Socksonme/rust_sandbox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSocksonme%2Frust_sandbox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSocksonme%2Frust_sandbox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3a50f09e2aa7b888c929f21baf9b71e2bb7dd682
[INFO] testing Socksonme/rust_sandbox against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSocksonme%2Frust_sandbox" "/workspace/builds/worker-20/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-20/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Socksonme/rust_sandbox on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Socksonme/rust_sandbox
[INFO] finished tweaking git repo https://github.com/Socksonme/rust_sandbox
[INFO] tweaked toml for git repo https://github.com/Socksonme/rust_sandbox written to /workspace/builds/worker-20/source/Cargo.toml
[INFO] crate git repo https://github.com/Socksonme/rust_sandbox already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] af466a39389c651eb16c1e5a6e22f0c01ad8393fa38043683f48edc70dba8ea0
[INFO] running `Command { std: "docker" "start" "-a" "af466a39389c651eb16c1e5a6e22f0c01ad8393fa38043683f48edc70dba8ea0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "af466a39389c651eb16c1e5a6e22f0c01ad8393fa38043683f48edc70dba8ea0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af466a39389c651eb16c1e5a6e22f0c01ad8393fa38043683f48edc70dba8ea0", kill_on_drop: false }`
[INFO] [stdout] af466a39389c651eb16c1e5a6e22f0c01ad8393fa38043683f48edc70dba8ea0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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" "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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 416bc4e57bac738b233f6565ca59b7973db7084ef41439426cd4a5a1f07b3393
[INFO] running `Command { std: "docker" "start" "-a" "416bc4e57bac738b233f6565ca59b7973db7084ef41439426cd4a5a1f07b3393", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_sandbox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `four`
[INFO] [stdout]   --> src/enums.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |     let four: IpAddrKind = IpAddrKind::V4(127, 122, 10, 2);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_four`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `six`
[INFO] [stdout]   --> src/enums.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |     let six: IpAddrKind = IpAddrKind::V6("aaa".to_string());
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `localhost`
[INFO] [stdout]   --> src/enums.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let localhost: IpAddrKind = IpAddrKind::V4(127, 0, 0, 1);
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_localhost`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Message`
[INFO] [stdout]  --> src/enums.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | enum Message {
[INFO] [stdout]   |      ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `some_function`
[INFO] [stdout]   --> src/enums.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn some_function() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.92s
[INFO] running `Command { std: "docker" "inspect" "416bc4e57bac738b233f6565ca59b7973db7084ef41439426cd4a5a1f07b3393", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "416bc4e57bac738b233f6565ca59b7973db7084ef41439426cd4a5a1f07b3393", kill_on_drop: false }`
[INFO] [stdout] 416bc4e57bac738b233f6565ca59b7973db7084ef41439426cd4a5a1f07b3393
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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" "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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 55afb0bd116bbfe5645749cd1e0f58443509a8f66279ec245e1ef03d842cf2b2
[INFO] running `Command { std: "docker" "start" "-a" "55afb0bd116bbfe5645749cd1e0f58443509a8f66279ec245e1ef03d842cf2b2", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rust_sandbox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `four`
[INFO] [stdout]   --> src/enums.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |     let four: IpAddrKind = IpAddrKind::V4(127, 122, 10, 2);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_four`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `six`
[INFO] [stdout]   --> src/enums.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |     let six: IpAddrKind = IpAddrKind::V6("aaa".to_string());
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `localhost`
[INFO] [stdout]   --> src/enums.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let localhost: IpAddrKind = IpAddrKind::V4(127, 0, 0, 1);
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_localhost`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Message`
[INFO] [stdout]  --> src/enums.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | enum Message {
[INFO] [stdout]   |      ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `some_function`
[INFO] [stdout]   --> src/enums.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn some_function() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `Command { std: "docker" "inspect" "55afb0bd116bbfe5645749cd1e0f58443509a8f66279ec245e1ef03d842cf2b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "55afb0bd116bbfe5645749cd1e0f58443509a8f66279ec245e1ef03d842cf2b2", kill_on_drop: false }`
[INFO] [stdout] 55afb0bd116bbfe5645749cd1e0f58443509a8f66279ec245e1ef03d842cf2b2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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" "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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 054e1630831e9395a21bd10100a80ad94eb27c40e9560af89950f5b890ab8ff1
[INFO] running `Command { std: "docker" "start" "-a" "054e1630831e9395a21bd10100a80ad94eb27c40e9560af89950f5b890ab8ff1", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `four`
[INFO] [stderr]   --> src/enums.rs:45:9
[INFO] [stderr]    |
[INFO] [stderr] 45 |     let four: IpAddrKind = IpAddrKind::V4(127, 122, 10, 2);
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_four`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `six`
[INFO] [stderr]   --> src/enums.rs:46:9
[INFO] [stderr]    |
[INFO] [stderr] 46 |     let six: IpAddrKind = IpAddrKind::V6("aaa".to_string());
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `localhost`
[INFO] [stderr]   --> src/enums.rs:48:9
[INFO] [stderr]    |
[INFO] [stderr] 48 |     let localhost: IpAddrKind = IpAddrKind::V4(127, 0, 0, 1);
[INFO] [stderr]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_localhost`
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Message`
[INFO] [stderr]  --> src/enums.rs:8:6
[INFO] [stderr]   |
[INFO] [stderr] 8 | enum Message {
[INFO] [stderr]   |      ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `some_function`
[INFO] [stderr]   --> src/enums.rs:16:8
[INFO] [stderr]    |
[INFO] [stderr] 16 |     fn some_function() {
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_sandbox` (bin "rust_sandbox" test) generated 5 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_sandbox-a08f64e007be2b05)
[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" "054e1630831e9395a21bd10100a80ad94eb27c40e9560af89950f5b890ab8ff1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "054e1630831e9395a21bd10100a80ad94eb27c40e9560af89950f5b890ab8ff1", kill_on_drop: false }`
[INFO] [stdout] 054e1630831e9395a21bd10100a80ad94eb27c40e9560af89950f5b890ab8ff1