[INFO] fetching crate biscuit 0.6.0-beta1...
[INFO] testing biscuit-0.6.0-beta1 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] extracting crate biscuit 0.6.0-beta1 into /workspace/builds/worker-43/source
[INFO] validating manifest of crates.io crate biscuit 0.6.0-beta1 on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate biscuit 0.6.0-beta1
[INFO] finished tweaking crates.io crate biscuit 0.6.0-beta1
[INFO] tweaked toml for crates.io crate biscuit 0.6.0-beta1 written to /workspace/builds/worker-43/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9244a5923756bac61f8f7ab6c320fd47b83ef971fcfbbeb208ae7967ff5395af
[INFO] running `Command { std: "docker" "start" "-a" "9244a5923756bac61f8f7ab6c320fd47b83ef971fcfbbeb208ae7967ff5395af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9244a5923756bac61f8f7ab6c320fd47b83ef971fcfbbeb208ae7967ff5395af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9244a5923756bac61f8f7ab6c320fd47b83ef971fcfbbeb208ae7967ff5395af", kill_on_drop: false }`
[INFO] [stdout] 9244a5923756bac61f8f7ab6c320fd47b83ef971fcfbbeb208ae7967ff5395af
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8772ad546fb9c5a70daad777a8e20f262b056913bb519fda5fec8d0a16fed328
[INFO] running `Command { std: "docker" "start" "-a" "8772ad546fb9c5a70daad777a8e20f262b056913bb519fda5fec8d0a16fed328", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling serde_json v1.0.71
[INFO] [stderr]    Compiling data-encoding v2.3.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.3.3
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling num-complex v0.3.1
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling num v0.3.1
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling biscuit v0.6.0-beta1 (/opt/rustwide/workdir)
[INFO] [stdout] error: field is never read: `secret`
[INFO] [stdout]    --> src/jws/flattened.rs:149:5
[INFO] [stdout]     |
[INFO] [stdout] 149 |     secret: Secret,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:61:5
[INFO] [stdout]     |
[INFO] [stdout] 61  |     dead_code,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `biscuit` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "8772ad546fb9c5a70daad777a8e20f262b056913bb519fda5fec8d0a16fed328", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8772ad546fb9c5a70daad777a8e20f262b056913bb519fda5fec8d0a16fed328", kill_on_drop: false }`
[INFO] [stdout] 8772ad546fb9c5a70daad777a8e20f262b056913bb519fda5fec8d0a16fed328