[INFO] fetching crate dessert 0.1.2...
[INFO] testing dessert-0.1.2 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate dessert 0.1.2 into /workspace/builds/worker-22/source
[INFO] validating manifest of crates.io crate dessert 0.1.2 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 dessert 0.1.2
[INFO] finished tweaking crates.io crate dessert 0.1.2
[INFO] tweaked toml for crates.io crate dessert 0.1.2 written to /workspace/builds/worker-22/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-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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] 2b86e4aafc1d289aa67518dcb6f6133ece26b1a4c9f308a9a20a492325fe1a32
[INFO] running `Command { std: "docker" "start" "-a" "2b86e4aafc1d289aa67518dcb6f6133ece26b1a4c9f308a9a20a492325fe1a32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2b86e4aafc1d289aa67518dcb6f6133ece26b1a4c9f308a9a20a492325fe1a32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b86e4aafc1d289aa67518dcb6f6133ece26b1a4c9f308a9a20a492325fe1a32", kill_on_drop: false }`
[INFO] [stdout] 2b86e4aafc1d289aa67518dcb6f6133ece26b1a4c9f308a9a20a492325fe1a32
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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] bb93201b74e4b16f7a597e954b5917bb3717754528723b9b0dfe6c043b6f8c73
[INFO] running `Command { std: "docker" "start" "-a" "bb93201b74e4b16f7a597e954b5917bb3717754528723b9b0dfe6c043b6f8c73", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling proc-macro2 v0.2.3
[INFO] [stderr]    Compiling quote v0.4.2
[INFO] [stderr]    Compiling syn v0.12.15
[INFO] [stderr]    Compiling dessert-derive v0.1.2
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling dessert v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.27s
[INFO] running `Command { std: "docker" "inspect" "bb93201b74e4b16f7a597e954b5917bb3717754528723b9b0dfe6c043b6f8c73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb93201b74e4b16f7a597e954b5917bb3717754528723b9b0dfe6c043b6f8c73", kill_on_drop: false }`
[INFO] [stdout] bb93201b74e4b16f7a597e954b5917bb3717754528723b9b0dfe6c043b6f8c73
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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] aa436da279fb6a545e27d6cdf56b4582da4c0d7a8bc5589c1a4592ea00492dd1
[INFO] running `Command { std: "docker" "start" "-a" "aa436da279fb6a545e27d6cdf56b4582da4c0d7a8bc5589c1a4592ea00492dd1", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]    Compiling dessert v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `ingredient`
[INFO] [stdout]   --> examples/deserialize.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     ingredient: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `FrenchToast` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> examples/deserialize.rs:12:26
[INFO] [stdout]    |
[INFO] [stdout] 12 | #[derive(ViaDeserialize, Debug)]
[INFO] [stdout]    |                          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.81s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/dessert-6a6ab183d99f6101)
[INFO] running `Command { std: "docker" "inspect" "aa436da279fb6a545e27d6cdf56b4582da4c0d7a8bc5589c1a4592ea00492dd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa436da279fb6a545e27d6cdf56b4582da4c0d7a8bc5589c1a4592ea00492dd1", kill_on_drop: false }`
[INFO] [stdout] aa436da279fb6a545e27d6cdf56b4582da4c0d7a8bc5589c1a4592ea00492dd1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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] 75d818ee7dd1202b09271ca20d29321140febd435c8697c5729a0645a0b6c05e
[INFO] running `Command { std: "docker" "start" "-a" "75d818ee7dd1202b09271ca20d29321140febd435c8697c5729a0645a0b6c05e", kill_on_drop: false }`
[INFO] [stderr] warning: field is never read: `ingredient`
[INFO] [stderr]   --> examples/deserialize.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     ingredient: String,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] note: `FrenchToast` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   --> examples/deserialize.rs:12:26
[INFO] [stderr]    |
[INFO] [stderr] 12 | #[derive(ViaDeserialize, Debug)]
[INFO] [stderr]    |                          ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: `dessert` (example "deserialize") generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/dessert-6a6ab183d99f6101)
[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] [stderr]    Doc-tests dessert
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - (line 11) ... ignored
[INFO] [stdout] test src/lib.rs - (line 48) ... ignored
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 2 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "75d818ee7dd1202b09271ca20d29321140febd435c8697c5729a0645a0b6c05e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75d818ee7dd1202b09271ca20d29321140febd435c8697c5729a0645a0b6c05e", kill_on_drop: false }`
[INFO] [stdout] 75d818ee7dd1202b09271ca20d29321140febd435c8697c5729a0645a0b6c05e