[INFO] fetching crate wander 0.1.0...
[INFO] testing wander-0.1.0 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate wander 0.1.0 into /workspace/builds/worker-17/source
[INFO] validating manifest of crates.io crate wander 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 wander 0.1.0
[INFO] finished tweaking crates.io crate wander 0.1.0
[INFO] tweaked toml for crates.io crate wander 0.1.0 written to /workspace/builds/worker-17/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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] 1418219dde663aa5f2bfa7be8d3c1406853bbc8c69cfdfb0d279e8c8cc7ec8ce
[INFO] running `Command { std: "docker" "start" "-a" "1418219dde663aa5f2bfa7be8d3c1406853bbc8c69cfdfb0d279e8c8cc7ec8ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1418219dde663aa5f2bfa7be8d3c1406853bbc8c69cfdfb0d279e8c8cc7ec8ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1418219dde663aa5f2bfa7be8d3c1406853bbc8c69cfdfb0d279e8c8cc7ec8ce", kill_on_drop: false }`
[INFO] [stdout] 1418219dde663aa5f2bfa7be8d3c1406853bbc8c69cfdfb0d279e8c8cc7ec8ce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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] e9040cf29cda4146001c04b9f5d1a10453cd71b4b302749629e27f170a3709d6
[INFO] running `Command { std: "docker" "start" "-a" "e9040cf29cda4146001c04b9f5d1a10453cd71b4b302749629e27f170a3709d6", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling unicode-segmentation v1.9.0
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling getrandom v0.2.6
[INFO] [stderr]    Compiling regex v1.5.5
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling gaze v0.3.0
[INFO] [stderr]    Compiling gaze v0.4.0
[INFO] [stderr]    Compiling uuid v0.8.2
[INFO] [stderr]    Compiling ligature v0.5.0
[INFO] [stderr]    Compiling lig v0.1.0
[INFO] [stderr]    Compiling wander v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct is never constructed: `Wander`
[INFO] [stdout]  --> src/lib.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Wander {
[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 5.44s
[INFO] running `Command { std: "docker" "inspect" "e9040cf29cda4146001c04b9f5d1a10453cd71b4b302749629e27f170a3709d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9040cf29cda4146001c04b9f5d1a10453cd71b4b302749629e27f170a3709d6", kill_on_drop: false }`
[INFO] [stdout] e9040cf29cda4146001c04b9f5d1a10453cd71b4b302749629e27f170a3709d6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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] 70f2ede583017d96cdea05540864330fe8e82ed6f0c4db56639f3a0786ca439c
[INFO] running `Command { std: "docker" "start" "-a" "70f2ede583017d96cdea05540864330fe8e82ed6f0c4db56639f3a0786ca439c", kill_on_drop: false }`
[INFO] [stderr]    Compiling wander v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct is never constructed: `Wander`
[INFO] [stdout]  --> src/lib.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Wander {
[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] [stdout] warning: struct is never constructed: `Wander`
[INFO] [stdout]  --> src/lib.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Wander {
[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 0.44s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/wander-9c193a8ace779cce)
[INFO] running `Command { std: "docker" "inspect" "70f2ede583017d96cdea05540864330fe8e82ed6f0c4db56639f3a0786ca439c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70f2ede583017d96cdea05540864330fe8e82ed6f0c4db56639f3a0786ca439c", kill_on_drop: false }`
[INFO] [stdout] 70f2ede583017d96cdea05540864330fe8e82ed6f0c4db56639f3a0786ca439c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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] 6784b301ff178e3bd5e2e8e167e23954144de64c99f57a5b6a459a3bc473ca4a
[INFO] running `Command { std: "docker" "start" "-a" "6784b301ff178e3bd5e2e8e167e23954144de64c99f57a5b6a459a3bc473ca4a", kill_on_drop: false }`
[INFO] [stderr] warning: struct is never constructed: `Wander`
[INFO] [stderr]  --> src/lib.rs:6:8
[INFO] [stderr]   |
[INFO] [stderr] 6 | struct Wander {
[INFO] [stderr]   |        ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `wander` (lib) generated 1 warning
[INFO] [stderr] warning: `wander` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/wander-9c193a8ace779cce)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests wander
[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] [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" "6784b301ff178e3bd5e2e8e167e23954144de64c99f57a5b6a459a3bc473ca4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6784b301ff178e3bd5e2e8e167e23954144de64c99f57a5b6a459a3bc473ca4a", kill_on_drop: false }`
[INFO] [stdout] 6784b301ff178e3bd5e2e8e167e23954144de64c99f57a5b6a459a3bc473ca4a