[INFO] cloning repository https://github.com/iovxw/babel
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/iovxw/babel" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiovxw%2Fbabel", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiovxw%2Fbabel'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d01d16153443656cfc54338c07c738aca881a401
[INFO] testing iovxw/babel against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiovxw%2Fbabel" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/iovxw/babel 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/iovxw/babel
[INFO] finished tweaking git repo https://github.com/iovxw/babel
[INFO] tweaked toml for git repo https://github.com/iovxw/babel written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/iovxw/babel 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]  Downloading crates ...
[INFO] [stderr]   Downloaded procedural-masquerade v0.1.6
[INFO] [stderr]   Downloaded derive_builder v0.5.1
[INFO] [stderr]   Downloaded derive_builder_core v0.2.0
[INFO] [stderr]   Downloaded openssl-sys v0.9.35
[INFO] [stderr]   Downloaded utf-8 v0.7.4
[INFO] [stderr]   Downloaded openssl v0.10.11
[INFO] [stderr]   Downloaded quick-xml v0.12.3
[INFO] [stderr]   Downloaded atom_syndication v0.6.0
[INFO] [stderr]   Downloaded pin-utils v0.1.0-alpha.2
[INFO] [stderr]   Downloaded tokio-async-await v0.1.2
[INFO] [stderr]   Downloaded scraper v0.7.0
[INFO] [stderr]   Downloaded futures-sink-preview v0.3.0-alpha.6
[INFO] [stderr]   Downloaded cssparser-macros v0.3.4
[INFO] [stderr]   Downloaded futures-io-preview v0.3.0-alpha.6
[INFO] [stderr]   Downloaded futures-core-preview v0.3.0-alpha.6
[INFO] [stderr]   Downloaded ego-tree v0.5.0
[INFO] [stderr]   Downloaded crossbeam-channel v0.2.5
[INFO] [stderr]   Downloaded tokio-channel v0.1.0
[INFO] [stderr]   Downloaded futures-channel-preview v0.3.0-alpha.6
[INFO] [stderr]   Downloaded cssparser v0.23.10
[INFO] [stderr]   Downloaded http v0.1.12
[INFO] [stderr]   Downloaded futures-util-preview v0.3.0-alpha.6
[INFO] [stderr]   Downloaded actix-web v0.7.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0b7d1d259d6290959b47eb7e343432baf11af1b8be5d74ce06d2dfde1de9e0a9
[INFO] running `Command { std: "docker" "start" "-a" "0b7d1d259d6290959b47eb7e343432baf11af1b8be5d74ce06d2dfde1de9e0a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0b7d1d259d6290959b47eb7e343432baf11af1b8be5d74ce06d2dfde1de9e0a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b7d1d259d6290959b47eb7e343432baf11af1b8be5d74ce06d2dfde1de9e0a9", kill_on_drop: false }`
[INFO] [stdout] 0b7d1d259d6290959b47eb7e343432baf11af1b8be5d74ce06d2dfde1de9e0a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9d2968e21228c78ee09f60a7cd5c07d068e48f37569bf249b77f80743f6a6ef9
[INFO] running `Command { std: "docker" "start" "-a" "9d2968e21228c78ee09f60a7cd5c07d068e48f37569bf249b77f80743f6a6ef9", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.43
[INFO] [stderr]    Compiling version_check v0.1.4
[INFO] [stderr]    Compiling cfg-if v0.1.5
[INFO] [stderr]    Compiling rand_core v0.2.1
[INFO] [stderr]    Compiling cc v1.0.25
[INFO] [stderr]    Compiling proc-macro2 v0.4.19
[INFO] [stderr]    Compiling futures v0.1.24
[INFO] [stderr]    Compiling byteorder v1.2.6
[INFO] [stderr]    Compiling crossbeam-utils v0.5.0
[INFO] [stderr]    Compiling slab v0.4.1
[INFO] [stderr]    Compiling nodrop v0.1.12
[INFO] [stderr]    Compiling encoding_index_tests v0.1.4
[INFO] [stderr]    Compiling lazycell v1.1.0
[INFO] [stderr]    Compiling serde v1.0.78
[INFO] [stderr]    Compiling rustc-demangle v0.1.9
[INFO] [stderr]    Compiling ryu v0.2.6
[INFO] [stderr]    Compiling string_cache_shared v0.3.0
[INFO] [stderr]    Compiling unicode-normalization v0.1.7
[INFO] [stderr]    Compiling failure_derive v0.1.2
[INFO] [stderr]    Compiling backtrace v0.2.3
[INFO] [stderr]    Compiling dtoa v0.4.3
[INFO] [stderr]    Compiling quick-error v1.2.2
[INFO] [stderr]    Compiling either v1.5.0
[INFO] [stderr]    Compiling mac v0.1.1
[INFO] [stderr]    Compiling openssl v0.10.11
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling linked-hash-map v0.4.2
[INFO] [stderr]    Compiling ucd-util v0.1.1
[INFO] [stderr]    Compiling utf-8 v0.7.4
[INFO] [stderr]    Compiling procedural-masquerade v0.1.6
[INFO] [stderr]    Compiling num-traits v0.2.5
[INFO] [stderr]    Compiling native-tls v0.2.1
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling regex v1.0.5
[INFO] [stderr]    Compiling derive_builder v0.5.1
[INFO] [stderr]    Compiling safemem v0.2.0
[INFO] [stderr]    Compiling unicode-width v0.1.5
[INFO] [stderr]    Compiling utf8-ranges v1.0.1
[INFO] [stderr]    Compiling httparse v1.3.2
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling pin-utils v0.1.0-alpha.2
[INFO] [stderr]    Compiling indexmap v1.0.1
[INFO] [stderr]    Compiling string v0.1.1
[INFO] [stderr]    Compiling htmlescape v0.3.1
[INFO] [stderr]    Compiling termcolor v1.0.3
[INFO] [stderr]    Compiling ego-tree v0.5.0
[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/pin-utils-0.1.0-alpha.2/src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(pin)]
[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 `pin-utils` 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" "9d2968e21228c78ee09f60a7cd5c07d068e48f37569bf249b77f80743f6a6ef9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d2968e21228c78ee09f60a7cd5c07d068e48f37569bf249b77f80743f6a6ef9", kill_on_drop: false }`
[INFO] [stdout] 9d2968e21228c78ee09f60a7cd5c07d068e48f37569bf249b77f80743f6a6ef9