[INFO] fetching crate gh_api 0.1.0...
[INFO] checking gh_api-0.1.0 against 1.55.0 for beta-1.56-3
[INFO] extracting crate gh_api 0.1.0 into /workspace/builds/worker-23/source
[INFO] validating manifest of crates.io crate gh_api 0.1.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate gh_api 0.1.0
[INFO] finished tweaking crates.io crate gh_api 0.1.0
[INFO] tweaked toml for crates.io crate gh_api 0.1.0 written to /workspace/builds/worker-23/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded async-compression v0.3.8
[INFO] [stderr]   Downloaded reqwest-wasm v0.11.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 23dd3d92f6d203ca0a8e056b38bef26847eb987a7d164efe4e1d87cbc71f8e31
[INFO] running `Command { std: "docker" "start" "-a" "23dd3d92f6d203ca0a8e056b38bef26847eb987a7d164efe4e1d87cbc71f8e31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "23dd3d92f6d203ca0a8e056b38bef26847eb987a7d164efe4e1d87cbc71f8e31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23dd3d92f6d203ca0a8e056b38bef26847eb987a7d164efe4e1d87cbc71f8e31", kill_on_drop: false }`
[INFO] [stdout] 23dd3d92f6d203ca0a8e056b38bef26847eb987a7d164efe4e1d87cbc71f8e31
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a9a1d1b61c5bbcccd3febb77887f803abbfab261b60ffdf7256a3b6a4e5542a5
[INFO] running `Command { std: "docker" "start" "-a" "a9a1d1b61c5bbcccd3febb77887f803abbfab261b60ffdf7256a3b6a4e5542a5", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-task v0.3.17
[INFO] [stderr]    Compiling openssl v0.10.36
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling native-tls v0.2.8
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]    Compiling encoding_rs v0.8.28
[INFO] [stderr]     Checking ipnet v2.3.1
[INFO] [stderr]    Compiling tokio v1.12.0
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling openssl-sys v0.9.67
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]     Checking mio v0.7.13
[INFO] [stderr]     Checking serde_urlencoded v0.7.0
[INFO] [stderr]     Checking flate2 v1.0.22
[INFO] [stderr]     Checking tokio-util v0.6.8
[INFO] [stderr]     Checking async-compression v0.3.8
[INFO] [stderr]     Checking h2 v0.3.6
[INFO] [stderr]     Checking tokio-native-tls v0.3.0
[INFO] [stderr]     Checking hyper v0.14.13
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking reqwest-wasm v0.11.0
[INFO] [stderr]     Checking gh_api v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(async_closure, map_into_keys_values, bool_to_option)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(async_closure, map_into_keys_values, bool_to_option)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[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] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `gh_api` 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" "a9a1d1b61c5bbcccd3febb77887f803abbfab261b60ffdf7256a3b6a4e5542a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9a1d1b61c5bbcccd3febb77887f803abbfab261b60ffdf7256a3b6a4e5542a5", kill_on_drop: false }`
[INFO] [stdout] a9a1d1b61c5bbcccd3febb77887f803abbfab261b60ffdf7256a3b6a4e5542a5
