[INFO] fetching crate rbt 0.1.0...
[INFO] testing rbt-0.1.0 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate rbt 0.1.0 into /workspace/builds/worker-24/source
[INFO] validating manifest of crates.io crate rbt 0.1.0 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rbt 0.1.0
[INFO] finished tweaking crates.io crate rbt 0.1.0
[INFO] tweaked toml for crates.io crate rbt 0.1.0 written to /workspace/builds/worker-24/source/Cargo.toml
[INFO] crate crates.io crate rbt 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 09b6e9ae6728bb75eae4310f274761d3c61c62fb5e8182f1e42ab8a9721bd024
[INFO] running `Command { std: "docker" "start" "-a" "09b6e9ae6728bb75eae4310f274761d3c61c62fb5e8182f1e42ab8a9721bd024", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "09b6e9ae6728bb75eae4310f274761d3c61c62fb5e8182f1e42ab8a9721bd024", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09b6e9ae6728bb75eae4310f274761d3c61c62fb5e8182f1e42ab8a9721bd024", kill_on_drop: false }`
[INFO] [stdout] 09b6e9ae6728bb75eae4310f274761d3c61c62fb5e8182f1e42ab8a9721bd024
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5bfe476d9daea0b24064beb8c4ec6b48148c3732b955c02029ca7c763f108bad
[INFO] running `Command { std: "docker" "start" "-a" "5bfe476d9daea0b24064beb8c4ec6b48148c3732b955c02029ca7c763f108bad", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling ppv-lite86 v0.2.9
[INFO] [stderr]    Compiling nix v0.19.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling shared_memory v0.11.3
[INFO] [stderr]    Compiling rbt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct is never constructed: `Root`
[INFO] [stdout]   --> src/main.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | struct Root {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.93s
[INFO] running `Command { std: "docker" "inspect" "5bfe476d9daea0b24064beb8c4ec6b48148c3732b955c02029ca7c763f108bad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5bfe476d9daea0b24064beb8c4ec6b48148c3732b955c02029ca7c763f108bad", kill_on_drop: false }`
[INFO] [stdout] 5bfe476d9daea0b24064beb8c4ec6b48148c3732b955c02029ca7c763f108bad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e7cc355d23b0f646d379e8fc67b723505f4d6efa6bcb2680237d66bdba738b85
[INFO] running `Command { std: "docker" "start" "-a" "e7cc355d23b0f646d379e8fc67b723505f4d6efa6bcb2680237d66bdba738b85", kill_on_drop: false }`
[INFO] [stderr]    Compiling rbt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct is never constructed: `Root`
[INFO] [stdout]   --> src/main.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | struct Root {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.54s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/rbt-fffd4df8369f6f1d)
[INFO] running `Command { std: "docker" "inspect" "e7cc355d23b0f646d379e8fc67b723505f4d6efa6bcb2680237d66bdba738b85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7cc355d23b0f646d379e8fc67b723505f4d6efa6bcb2680237d66bdba738b85", kill_on_drop: false }`
[INFO] [stdout] e7cc355d23b0f646d379e8fc67b723505f4d6efa6bcb2680237d66bdba738b85
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f9c30325833d55bd94ac4c470a5ab6cc0144273d3799edc5b931a2b27af0fefb
[INFO] running `Command { std: "docker" "start" "-a" "f9c30325833d55bd94ac4c470a5ab6cc0144273d3799edc5b931a2b27af0fefb", kill_on_drop: false }`
[INFO] [stderr] warning: struct is never constructed: `Root`
[INFO] [stderr]   --> src/main.rs:48:8
[INFO] [stderr]    |
[INFO] [stderr] 48 | struct Root {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rbt` (bin "rbt" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rbt-fffd4df8369f6f1d)
[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" "f9c30325833d55bd94ac4c470a5ab6cc0144273d3799edc5b931a2b27af0fefb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9c30325833d55bd94ac4c470a5ab6cc0144273d3799edc5b931a2b27af0fefb", kill_on_drop: false }`
[INFO] [stdout] f9c30325833d55bd94ac4c470a5ab6cc0144273d3799edc5b931a2b27af0fefb