[INFO] cloning repository https://github.com/vi/mal-rust-vi
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vi/mal-rust-vi" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvi%2Fmal-rust-vi", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvi%2Fmal-rust-vi'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9614838720bc130d49d7a15777e6a1f73b13ca25
[INFO] testing vi/mal-rust-vi against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvi%2Fmal-rust-vi" "/workspace/builds/worker-21/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-21/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vi/mal-rust-vi 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/vi/mal-rust-vi
[INFO] finished tweaking git repo https://github.com/vi/mal-rust-vi
[INFO] tweaked toml for git repo https://github.com/vi/mal-rust-vi written to /workspace/builds/worker-21/source/Cargo.toml
[INFO] crate git repo https://github.com/vi/mal-rust-vi 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded arrayref v0.3.5
[INFO] [stderr]   Downloaded pest_meta v2.0.3
[INFO] [stderr]   Downloaded failure_derive v0.1.2
[INFO] [stderr]   Downloaded synstructure v0.9.0
[INFO] [stderr]   Downloaded maplit v1.0.1
[INFO] [stderr]   Downloaded itertools v0.7.8
[INFO] [stderr]   Downloaded cfg-if v0.1.5
[INFO] [stderr]   Downloaded failure v0.1.2
[INFO] [stderr]   Downloaded pest v2.0.1
[INFO] [stderr]   Downloaded block-buffer v0.3.3
[INFO] [stderr]   Downloaded sha-1 v0.7.0
[INFO] [stderr]   Downloaded im-rc v12.2.0
[INFO] [stderr]   Downloaded single v1.0.0
[INFO] [stderr]   Downloaded ucd-trie v0.1.1
[INFO] [stderr]   Downloaded syn v0.14.9
[INFO] [stderr]   Downloaded syn v0.15.11
[INFO] [stderr]   Downloaded proc-macro2 v0.4.20
[INFO] [stderr]   Downloaded pest_generator v2.0.0
[INFO] [stderr]   Downloaded typenum v1.10.0
[INFO] [stderr]   Downloaded digest v0.7.6
[INFO] [stderr]   Downloaded quote v0.6.8
[INFO] [stderr]   Downloaded pest_derive v2.0.1
[INFO] [stderr]   Downloaded slab_typesafe v0.1.2
[INFO] [stderr]   Downloaded slab v0.4.1
[INFO] [stderr]   Downloaded unescape v0.1.0
[INFO] [stderr]   Downloaded generic-array v0.9.0
[INFO] [stderr]   Downloaded pest-deconstruct v0.2.0
[INFO] [stderr]   Downloaded pest-deconstruct-derive v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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] c2cb6a38ed2a0ab5c89f492bcb5616cff1ad41bbfc0874e2ad92e3e75c0fc825
[INFO] running `Command { std: "docker" "start" "-a" "c2cb6a38ed2a0ab5c89f492bcb5616cff1ad41bbfc0874e2ad92e3e75c0fc825", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c2cb6a38ed2a0ab5c89f492bcb5616cff1ad41bbfc0874e2ad92e3e75c0fc825", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2cb6a38ed2a0ab5c89f492bcb5616cff1ad41bbfc0874e2ad92e3e75c0fc825", kill_on_drop: false }`
[INFO] [stdout] c2cb6a38ed2a0ab5c89f492bcb5616cff1ad41bbfc0874e2ad92e3e75c0fc825
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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] 9efcb6b6882049bc7189f0b97ef0ae8fd94daf452617efd2781b124c86628e80
[INFO] running `Command { std: "docker" "start" "-a" "9efcb6b6882049bc7189f0b97ef0ae8fd94daf452617efd2781b124c86628e80", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v0.4.20
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling cc v1.0.25
[INFO] [stderr]    Compiling libc v0.2.43
[INFO] [stderr]    Compiling failure_derive v0.1.2
[INFO] [stderr]    Compiling cfg-if v0.1.5
[INFO] [stderr]    Compiling ucd-trie v0.1.1
[INFO] [stderr]    Compiling rustc-demangle v0.1.9
[INFO] [stderr]    Compiling maplit v1.0.1
[INFO] [stderr]    Compiling either v1.5.0
[INFO] [stderr]    Compiling slab v0.4.1
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]    Compiling unescape v0.1.0
[INFO] [stderr]    Compiling malvi_step0 v0.1.0 (/opt/rustwide/workdir/step0)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> step0/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(try_blocks)]
[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 `malvi_step0` 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" "9efcb6b6882049bc7189f0b97ef0ae8fd94daf452617efd2781b124c86628e80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9efcb6b6882049bc7189f0b97ef0ae8fd94daf452617efd2781b124c86628e80", kill_on_drop: false }`
[INFO] [stdout] 9efcb6b6882049bc7189f0b97ef0ae8fd94daf452617efd2781b124c86628e80