[INFO] cloning repository https://github.com/sandmuel/ren_nodes
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sandmuel/ren_nodes" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsandmuel%2Fren_nodes", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsandmuel%2Fren_nodes'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 00a1e8bb910ea3e031da4f3791409b8d52b6bd16
[INFO] checking sandmuel/ren_nodes against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsandmuel%2Fren_nodes" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/sandmuel/ren_nodes
[INFO] finished tweaking git repo https://github.com/sandmuel/ren_nodes
[INFO] tweaked toml for git repo https://github.com/sandmuel/ren_nodes written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/sandmuel/ren_nodes on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/sandmuel/ren_nodes already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/me-self/necs`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded boxcar v0.2.14
[INFO] [stderr]   Downloaded slotmap v1.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4b66ec748a3a668b1b75d6dd9acb46c8987783541903a9d5604d6f06cd8369b4
[INFO] running `Command { std: "docker" "start" "-a" "4b66ec748a3a668b1b75d6dd9acb46c8987783541903a9d5604d6f06cd8369b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4b66ec748a3a668b1b75d6dd9acb46c8987783541903a9d5604d6f06cd8369b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b66ec748a3a668b1b75d6dd9acb46c8987783541903a9d5604d6f06cd8369b4", kill_on_drop: false }`
[INFO] [stdout] 4b66ec748a3a668b1b75d6dd9acb46c8987783541903a9d5604d6f06cd8369b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eef5daf8b418f2b9de81d8231d67365581cce563b406cb13cb3e79d6690e2e22
[INFO] running `Command { std: "docker" "start" "-a" "eef5daf8b418f2b9de81d8231d67365581cce563b406cb13cb3e79d6690e2e22", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling unicode-ident v1.0.24
[INFO] [stderr]    Compiling quote v1.0.44
[INFO] [stderr]    Compiling version_check v0.9.5
[INFO] [stderr]     Checking boxcar v0.2.14
[INFO] [stderr]     Checking rustc-hash v2.1.1
[INFO] [stderr]    Compiling slotmap v1.1.1
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling necs_macros v0.1.0 (https://github.com/me-self/necs#7600e788)
[INFO] [stderr]     Checking necs_internal v0.1.0 (https://github.com/me-self/necs#7600e788)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/git/checkouts/necs-0dd372b9241c3f7b/7600e78/necs_internal/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(downcast_unchecked)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `necs_internal` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "eef5daf8b418f2b9de81d8231d67365581cce563b406cb13cb3e79d6690e2e22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eef5daf8b418f2b9de81d8231d67365581cce563b406cb13cb3e79d6690e2e22", kill_on_drop: false }`
[INFO] [stdout] eef5daf8b418f2b9de81d8231d67365581cce563b406cb13cb3e79d6690e2e22