[INFO] cloning repository https://github.com/parlir/r-json-path
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/parlir/r-json-path" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fparlir%2Fr-json-path", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fparlir%2Fr-json-path'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1ea8e4af09a9a3d764aec9593ce12c97ae7a9681
[INFO] testing parlir/r-json-path against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fparlir%2Fr-json-path" "/workspace/builds/worker-28/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-28/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/parlir/r-json-path on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/parlir/r-json-path
[INFO] finished tweaking git repo https://github.com/parlir/r-json-path
[INFO] tweaked toml for git repo https://github.com/parlir/r-json-path written to /workspace/builds/worker-28/source/Cargo.toml
[INFO] crate git repo https://github.com/parlir/r-json-path already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pest_derive v1.0.7
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.10
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.10
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.10
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.10
[INFO] [stderr]   Downloaded serde v1.0.58
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3c89acb1e7a10d49a2ae80783f8ed7710874244983f1d47a875504fbada9dce2
[INFO] running `Command { std: "docker" "start" "-a" "3c89acb1e7a10d49a2ae80783f8ed7710874244983f1d47a875504fbada9dce2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3c89acb1e7a10d49a2ae80783f8ed7710874244983f1d47a875504fbada9dce2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c89acb1e7a10d49a2ae80783f8ed7710874244983f1d47a875504fbada9dce2", kill_on_drop: false }`
[INFO] [stdout] 3c89acb1e7a10d49a2ae80783f8ed7710874244983f1d47a875504fbada9dce2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2b1396aaa48c9cf41bbe818ec05a80c92614b3472e01348bc16aa2a4f659eec9
[INFO] running `Command { std: "docker" "start" "-a" "2b1396aaa48c9cf41bbe818ec05a80c92614b3472e01348bc16aa2a4f659eec9", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.58
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.10
[INFO] [stderr]    Compiling itoa v0.4.1
[INFO] [stderr]    Compiling cfg-if v0.1.3
[INFO] [stderr]    Compiling pest v1.0.6
[INFO] [stderr]    Compiling proc-macro2 v0.4.3
[INFO] [stderr]    Compiling proc-macro2 v0.3.8
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling log v0.4.1
[INFO] [stderr]    Compiling quote v0.5.2
[INFO] [stderr]    Compiling quote v0.6.2
[INFO] [stderr]    Compiling syn v0.13.11
[INFO] [stderr]    Compiling syn v0.14.0
[INFO] [stderr]    Compiling pest_derive v1.0.7
[INFO] [stderr]    Compiling serde_derive v1.0.59
[INFO] [stderr]    Compiling serde_json v1.0.17
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.10
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.10
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/wasm-bindgen-macro-0.2.10/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
[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 `wasm-bindgen-macro` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "2b1396aaa48c9cf41bbe818ec05a80c92614b3472e01348bc16aa2a4f659eec9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b1396aaa48c9cf41bbe818ec05a80c92614b3472e01348bc16aa2a4f659eec9", kill_on_drop: false }`
[INFO] [stdout] 2b1396aaa48c9cf41bbe818ec05a80c92614b3472e01348bc16aa2a4f659eec9