[INFO] cloning repository https://github.com/dwalter0/faucet_workspace_serialization_poc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dwalter0/faucet_workspace_serialization_poc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdwalter0%2Ffaucet_workspace_serialization_poc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdwalter0%2Ffaucet_workspace_serialization_poc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] da2007c3d2fa8f9f83123a24bc8b7204b79546e4
[INFO] testing dwalter0/faucet_workspace_serialization_poc against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdwalter0%2Ffaucet_workspace_serialization_poc" "/workspace/builds/worker-105/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-105/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dwalter0/faucet_workspace_serialization_poc on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dwalter0/faucet_workspace_serialization_poc
[INFO] finished tweaking git repo https://github.com/dwalter0/faucet_workspace_serialization_poc
[INFO] tweaked toml for git repo https://github.com/dwalter0/faucet_workspace_serialization_poc written to /workspace/builds/worker-105/source/Cargo.toml
[INFO] crate git repo https://github.com/dwalter0/faucet_workspace_serialization_poc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9652d68bf33fc94b07b6a38fc9f3138cd3ffb96a4e1584859eed41180c6ec8de
[INFO] running `Command { std: "docker" "start" "-a" "9652d68bf33fc94b07b6a38fc9f3138cd3ffb96a4e1584859eed41180c6ec8de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9652d68bf33fc94b07b6a38fc9f3138cd3ffb96a4e1584859eed41180c6ec8de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9652d68bf33fc94b07b6a38fc9f3138cd3ffb96a4e1584859eed41180c6ec8de", kill_on_drop: false }`
[INFO] [stdout] 9652d68bf33fc94b07b6a38fc9f3138cd3ffb96a4e1584859eed41180c6ec8de
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] af3513e2c9ba058105ac1b929df4ce05432ce286b947540a3d542b8628e7e4b6
[INFO] running `Command { std: "docker" "start" "-a" "af3513e2c9ba058105ac1b929df4ce05432ce286b947540a3d542b8628e7e4b6", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]    Compiling linked-hash-map v0.5.4
[INFO] [stderr]    Compiling dtoa v0.4.8
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling yaml-rust v0.4.5
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling serde_yaml v0.8.17
[INFO] [stderr]    Compiling yaml_parse_attempt_two v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `skip_serializing_if_empty_number`
[INFO] [stdout]   --> src/serialization_helpers.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn skip_serializing_if_empty_number<T: Zero>(input: &T) -> bool{
[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 56.77s
[INFO] running `Command { std: "docker" "inspect" "af3513e2c9ba058105ac1b929df4ce05432ce286b947540a3d542b8628e7e4b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af3513e2c9ba058105ac1b929df4ce05432ce286b947540a3d542b8628e7e4b6", kill_on_drop: false }`
[INFO] [stdout] af3513e2c9ba058105ac1b929df4ce05432ce286b947540a3d542b8628e7e4b6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 18b3b7f4396b7f4cb4a06179be59011534a1f2725700bf39e4ceb582486bb7f5
[INFO] running `Command { std: "docker" "start" "-a" "18b3b7f4396b7f4cb4a06179be59011534a1f2725700bf39e4ceb582486bb7f5", kill_on_drop: false }`
[INFO] [stderr]    Compiling yaml_parse_attempt_two v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `skip_serializing_if_empty_number`
[INFO] [stdout]   --> src/serialization_helpers.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn skip_serializing_if_empty_number<T: Zero>(input: &T) -> bool{
[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 2.43s
[INFO] running `Command { std: "docker" "inspect" "18b3b7f4396b7f4cb4a06179be59011534a1f2725700bf39e4ceb582486bb7f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18b3b7f4396b7f4cb4a06179be59011534a1f2725700bf39e4ceb582486bb7f5", kill_on_drop: false }`
[INFO] [stdout] 18b3b7f4396b7f4cb4a06179be59011534a1f2725700bf39e4ceb582486bb7f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c6bb7a968e3af4d367c62d0d04244688f978420ba3f98b82cf5d21744a387cb6
[INFO] running `Command { std: "docker" "start" "-a" "c6bb7a968e3af4d367c62d0d04244688f978420ba3f98b82cf5d21744a387cb6", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: function is never used: `skip_serializing_if_empty_number`
[INFO] [stderr]   --> src/serialization_helpers.rs:16:8
[INFO] [stderr]    |
[INFO] [stderr] 16 | pub fn skip_serializing_if_empty_number<T: Zero>(input: &T) -> bool{
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `yaml_parse_attempt_two` (bin "yaml_parse_attempt_two" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.77s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/yaml_parse_attempt_two-293fcd78dd5d1ed6)
[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" "c6bb7a968e3af4d367c62d0d04244688f978420ba3f98b82cf5d21744a387cb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6bb7a968e3af4d367c62d0d04244688f978420ba3f98b82cf5d21744a387cb6", kill_on_drop: false }`
[INFO] [stdout] c6bb7a968e3af4d367c62d0d04244688f978420ba3f98b82cf5d21744a387cb6