[INFO] cloning repository https://github.com/jechase/rlox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jechase/rlox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjechase%2Frlox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjechase%2Frlox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 230eb638a84406f9de10f057b182bc3baa465242
[INFO] testing jechase/rlox against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjechase%2Frlox" "/workspace/builds/worker-17/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-17/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jechase/rlox 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/jechase/rlox
[INFO] finished tweaking git repo https://github.com/jechase/rlox
[INFO] tweaked toml for git repo https://github.com/jechase/rlox written to /workspace/builds/worker-17/source/Cargo.toml
[INFO] crate git repo https://github.com/jechase/rlox 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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] 7faecdea3e27858fa94e558b9e65f681ae888d465d3d6dd0ceb5a94e65ac1452
[INFO] running `Command { std: "docker" "start" "-a" "7faecdea3e27858fa94e558b9e65f681ae888d465d3d6dd0ceb5a94e65ac1452", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7faecdea3e27858fa94e558b9e65f681ae888d465d3d6dd0ceb5a94e65ac1452", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7faecdea3e27858fa94e558b9e65f681ae888d465d3d6dd0ceb5a94e65ac1452", kill_on_drop: false }`
[INFO] [stdout] 7faecdea3e27858fa94e558b9e65f681ae888d465d3d6dd0ceb5a94e65ac1452
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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] c5684122d956c3007d583e080c419a8e90f37b71ddca99a36248c1504365f051
[INFO] running `Command { std: "docker" "start" "-a" "c5684122d956c3007d583e080c419a8e90f37b71ddca99a36248c1504365f051", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v0.4.18
[INFO] [stderr]    Compiling cc v1.0.23
[INFO] [stderr]    Compiling failure_derive v0.1.2
[INFO] [stderr]    Compiling version_check v0.1.4
[INFO] [stderr]    Compiling rustc-demangle v0.1.9
[INFO] [stderr]    Compiling mac v0.1.1
[INFO] [stderr]    Compiling utf-8 v0.7.4
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.1
[INFO] [stderr]    Compiling futf v0.1.4
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]    Compiling tendril v0.4.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]    Compiling display_derive v0.0.0
[INFO] [stderr]    Compiling backtrace v0.3.9
[INFO] [stderr]    Compiling synstructure v0.9.0
[INFO] [stderr]    Compiling failure v0.1.2
[INFO] [stderr]    Compiling rlox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(nll)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(transpose_result)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rlox` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "c5684122d956c3007d583e080c419a8e90f37b71ddca99a36248c1504365f051", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5684122d956c3007d583e080c419a8e90f37b71ddca99a36248c1504365f051", kill_on_drop: false }`
[INFO] [stdout] c5684122d956c3007d583e080c419a8e90f37b71ddca99a36248c1504365f051