[INFO] fetching crate jwtk 0.2.0...
[INFO] checking jwtk-0.2.0 against beta-2021-10-15 for beta-1.56-3
[INFO] extracting crate jwtk 0.2.0 into /workspace/builds/worker-105/source
[INFO] validating manifest of crates.io crate jwtk 0.2.0 on toolchain beta-2021-10-15
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate jwtk 0.2.0
[INFO] finished tweaking crates.io crate jwtk 0.2.0
[INFO] tweaked toml for crates.io crate jwtk 0.2.0 written to /workspace/builds/worker-105/source/Cargo.toml
[INFO] crate crates.io crate jwtk 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "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-2021-10-15" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 82eed9bfd5936da2701ec86ac5dd5d532f11be528a7c68275f0f8441519102ee
[INFO] running `Command { std: "docker" "start" "-a" "82eed9bfd5936da2701ec86ac5dd5d532f11be528a7c68275f0f8441519102ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "82eed9bfd5936da2701ec86ac5dd5d532f11be528a7c68275f0f8441519102ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82eed9bfd5936da2701ec86ac5dd5d532f11be528a7c68275f0f8441519102ee", kill_on_drop: false }`
[INFO] [stdout] 82eed9bfd5936da2701ec86ac5dd5d532f11be528a7c68275f0f8441519102ee
[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-2021-10-15" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b5e0bd4fc16b69231b0668942d20b32110f7ccb9b350986aec9a6bf391c2c2a1
[INFO] running `Command { std: "docker" "start" "-a" "b5e0bd4fc16b69231b0668942d20b32110f7ccb9b350986aec9a6bf391c2c2a1", 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] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling futures-core v0.3.16
[INFO] [stderr]    Compiling futures-task v0.3.16
[INFO] [stderr]     Checking slab v0.4.4
[INFO] [stderr]     Checking futures-sink v0.3.16
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]    Compiling futures-channel v0.3.16
[INFO] [stderr]    Compiling httparse v1.4.1
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]    Compiling openssl v0.10.35
[INFO] [stderr]    Compiling native-tls v0.2.7
[INFO] [stderr]     Checking tower-layer v0.3.1
[INFO] [stderr]    Compiling futures-macro v0.3.16
[INFO] [stderr]    Compiling tokio v1.9.0
[INFO] [stderr]    Compiling futures-util v0.3.16
[INFO] [stderr]    Compiling openssl-sys v0.9.65
[INFO] [stderr]     Checking tracing-core v0.1.18
[INFO] [stderr]     Checking http-body v0.4.3
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking mio v0.7.13
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking socket2 v0.4.1
[INFO] [stderr]    Compiling tokio-macros v1.3.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.15
[INFO] [stderr]    Compiling pin-project-internal v1.0.8
[INFO] [stderr]    Compiling async-trait v0.1.51
[INFO] [stderr]     Checking pin-project v1.0.8
[INFO] [stderr]     Checking tracing v0.1.26
[INFO] [stderr]     Checking tower-http v0.1.1
[INFO] [stderr]     Checking tokio-util v0.6.7
[INFO] [stderr]     Checking tokio-native-tls v0.3.0
[INFO] [stderr]     Checking h2 v0.3.3
[INFO] [stderr]     Checking tower v0.4.8
[INFO] [stderr]     Checking serde_urlencoded v0.7.0
[INFO] [stderr]     Checking serde_json v1.0.66
[INFO] [stderr]     Checking hyper v0.14.11
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking axum v0.1.3
[INFO] [stderr]     Checking reqwest v0.11.4
[INFO] [stderr]     Checking jwtk v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> benches/sig.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `jwtk` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "b5e0bd4fc16b69231b0668942d20b32110f7ccb9b350986aec9a6bf391c2c2a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5e0bd4fc16b69231b0668942d20b32110f7ccb9b350986aec9a6bf391c2c2a1", kill_on_drop: false }`
[INFO] [stdout] b5e0bd4fc16b69231b0668942d20b32110f7ccb9b350986aec9a6bf391c2c2a1
