[INFO] cloning repository https://github.com/owen-d/rsonnet
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/owen-d/rsonnet" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fowen-d%2Frsonnet", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fowen-d%2Frsonnet'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5ac5679c7b9b5ef9910d815f5ff89571bf2f32f2
[INFO] testing owen-d/rsonnet against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fowen-d%2Frsonnet" "/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/owen-d/rsonnet on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/owen-d/rsonnet
[INFO] finished tweaking git repo https://github.com/owen-d/rsonnet
[INFO] tweaked toml for git repo https://github.com/owen-d/rsonnet written to /workspace/builds/worker-28/source/Cargo.toml
[INFO] crate git repo https://github.com/owen-d/rsonnet already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: dependency (k8s-openapi) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde-value v0.7.0
[INFO] [stderr]   Downloaded ordered-float v2.1.1
[INFO] [stderr]   Downloaded serde_yaml v0.8.17
[INFO] [stderr]   Downloaded k8s-openapi v0.11.0
[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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 48d87ee026e55a9c81e2780838390f1aaeb78884a14dd51e8d51b26eb0bdf6a7
[INFO] running `Command { std: "docker" "start" "-a" "48d87ee026e55a9c81e2780838390f1aaeb78884a14dd51e8d51b26eb0bdf6a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "48d87ee026e55a9c81e2780838390f1aaeb78884a14dd51e8d51b26eb0bdf6a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48d87ee026e55a9c81e2780838390f1aaeb78884a14dd51e8d51b26eb0bdf6a7", kill_on_drop: false }`
[INFO] [stdout] 48d87ee026e55a9c81e2780838390f1aaeb78884a14dd51e8d51b26eb0bdf6a7
[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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 678a15b343ec97c17f43ba96ec270ad70300045c1bc74ff9a54dfaf59ba16f5a
[INFO] running `Command { std: "docker" "start" "-a" "678a15b343ec97c17f43ba96ec270ad70300045c1bc74ff9a54dfaf59ba16f5a", kill_on_drop: false }`
[INFO] [stderr] warning: dependency (k8s-openapi) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling libc v0.2.91
[INFO] [stderr]    Compiling tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling percent-encoding v2.1.0
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling gimli v0.23.0
[INFO] [stderr]    Compiling k8s-openapi v0.11.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.18
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling object v0.23.0
[INFO] [stderr]    Compiling bytes v1.0.1
[INFO] [stderr]    Compiling linked-hash-map v0.5.4
[INFO] [stderr]    Compiling dtoa v0.4.7
[INFO] [stderr]    Compiling base64 v0.13.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling tinyvec v1.1.1
[INFO] [stderr]    Compiling yaml-rust v0.4.5
[INFO] [stderr]    Compiling form_urlencoded v1.0.1
[INFO] [stderr]    Compiling http v0.2.3
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]    Compiling unicode-normalization v0.1.17
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling ordered-float v2.1.1
[INFO] [stderr]    Compiling addr2line v0.14.1
[INFO] [stderr]    Compiling idna v0.2.2
[INFO] [stderr]    Compiling backtrace v0.3.56
[INFO] [stderr]    Compiling url v2.2.1
[INFO] [stderr]    Compiling serde-value v0.7.0
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling serde_yaml v0.8.17
[INFO] [stderr]    Compiling rsonnet 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:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(iter_intersperse)]
[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 `rsonnet` 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" "678a15b343ec97c17f43ba96ec270ad70300045c1bc74ff9a54dfaf59ba16f5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "678a15b343ec97c17f43ba96ec270ad70300045c1bc74ff9a54dfaf59ba16f5a", kill_on_drop: false }`
[INFO] [stdout] 678a15b343ec97c17f43ba96ec270ad70300045c1bc74ff9a54dfaf59ba16f5a