[INFO] cloning repository https://github.com/ear7h/lang1
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ear7h/lang1" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fear7h%2Flang1", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fear7h%2Flang1'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7420757c926afd63171f38ef5df08cfa56da2ee6
[INFO] testing ear7h/lang1 against 1.54.0 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fear7h%2Flang1" "/workspace/builds/worker-45/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-45/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ear7h/lang1 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ear7h/lang1
[INFO] finished tweaking git repo https://github.com/ear7h/lang1
[INFO] tweaked toml for git repo https://github.com/ear7h/lang1 written to /workspace/builds/worker-45/source/Cargo.toml
[INFO] crate git repo https://github.com/ear7h/lang1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded peg-runtime v0.7.0
[INFO] [stderr]   Downloaded peg v0.7.0
[INFO] [stderr]   Downloaded string-interner v0.12.2
[INFO] [stderr]   Downloaded quickscope v0.1.6
[INFO] [stderr]   Downloaded peg-macros v0.7.0
[INFO] [stderr]   Downloaded faerie v0.16.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5c28ff1e0eb18e2381bac6e0b55f0aceea73463625b29d3993c3e7771808c9d6
[INFO] running `Command { std: "docker" "start" "-a" "5c28ff1e0eb18e2381bac6e0b55f0aceea73463625b29d3993c3e7771808c9d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5c28ff1e0eb18e2381bac6e0b55f0aceea73463625b29d3993c3e7771808c9d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c28ff1e0eb18e2381bac6e0b55f0aceea73463625b29d3993c3e7771808c9d6", kill_on_drop: false }`
[INFO] [stdout] 5c28ff1e0eb18e2381bac6e0b55f0aceea73463625b29d3993c3e7771808c9d6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 182bd0f671328cf6dd9c7854381186cfc9a35ce2e478554b7c7718b390de222c
[INFO] running `Command { std: "docker" "start" "-a" "182bd0f671328cf6dd9c7854381186cfc9a35ce2e478554b7c7718b390de222c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling ahash v0.4.7
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling target-lexicon v0.11.2
[INFO] [stderr]    Compiling peg-runtime v0.7.0
[INFO] [stderr]    Compiling plain v0.2.3
[INFO] [stderr]    Compiling smallvec v1.6.1
[INFO] [stderr]    Compiling hashbrown v0.9.1
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling peg-macros v0.7.0
[INFO] [stderr]    Compiling quickscope v0.1.6
[INFO] [stderr]    Compiling peg v0.7.0
[INFO] [stderr]    Compiling string-interner v0.12.2
[INFO] [stderr]    Compiling scroll_derive v0.10.5
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]    Compiling scroll v0.10.2
[INFO] [stderr]    Compiling goblin v0.3.4
[INFO] [stderr]    Compiling thiserror v1.0.26
[INFO] [stderr]    Compiling faerie v0.16.0
[INFO] [stderr]    Compiling lang1 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:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(box_patterns)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(box_syntax)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(bindings_after_at)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 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 `lang1`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "182bd0f671328cf6dd9c7854381186cfc9a35ce2e478554b7c7718b390de222c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "182bd0f671328cf6dd9c7854381186cfc9a35ce2e478554b7c7718b390de222c", kill_on_drop: false }`
[INFO] [stdout] 182bd0f671328cf6dd9c7854381186cfc9a35ce2e478554b7c7718b390de222c
