[INFO] cloning repository https://github.com/regexident/cargo-modules
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/regexident/cargo-modules" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fregexident%2Fcargo-modules", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fregexident%2Fcargo-modules'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b1f0063e395ce55136f4b8dbd90f2f95da344b0a
[INFO] testing regexident/cargo-modules against beta-2021-01-01 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fregexident%2Fcargo-modules" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/regexident/cargo-modules on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/regexident/cargo-modules
[INFO] finished tweaking git repo https://github.com/regexident/cargo-modules
[INFO] tweaked toml for git repo https://github.com/regexident/cargo-modules written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/regexident/cargo-modules already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustc-ap-rustc_fs_util v693.0.0
[INFO] [stderr]   Downloaded rustc-rayon-core v0.3.0
[INFO] [stderr]   Downloaded annotate-snippets v0.8.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_parse v693.0.0
[INFO] [stderr]   Downloaded psm v0.1.12
[INFO] [stderr]   Downloaded rustc-ap-rustc_macros v693.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_data_structures v693.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_index v693.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_lint_defs v693.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_ast v693.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_errors v693.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_ast_pretty v693.0.0
[INFO] [stderr]   Downloaded json v0.12.4
[INFO] [stderr]   Downloaded termize v0.1.1
[INFO] [stderr]   Downloaded measureme v9.0.0
[INFO] [stderr]   Downloaded rustc-rayon v0.3.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_arena v693.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_feature v693.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_session v693.0.0
[INFO] [stderr]   Downloaded ena v0.14.0
[INFO] [stderr]   Downloaded stacker v0.1.12
[INFO] [stderr]   Downloaded rustc-ap-rustc_graphviz v693.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_serialize v693.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_span v693.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_target v693.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_lexer v693.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3ff2c54b2728866c348f7a3d0bc87ab49070bae8a8e3b0e131feba5be45effe2
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3ff2c54b2728866c348f7a3d0bc87ab49070bae8a8e3b0e131feba5be45effe2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3ff2c54b2728866c348f7a3d0bc87ab49070bae8a8e3b0e131feba5be45effe2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ff2c54b2728866c348f7a3d0bc87ab49070bae8a8e3b0e131feba5be45effe2", kill_on_drop: false }`
[INFO] [stdout] 3ff2c54b2728866c348f7a3d0bc87ab49070bae8a8e3b0e131feba5be45effe2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "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] ab4f3c94ee099b7c59d722de2c9636afbac50f0242673c9cb8cdff9fb92d0363
[INFO] running `Command { std: "docker" "start" "-a" "ab4f3c94ee099b7c59d722de2c9636afbac50f0242673c9cb8cdff9fb92d0363", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling smallvec v1.5.1
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling hashbrown v0.9.1
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling rustc-rayon-core v0.3.0
[INFO] [stderr]    Compiling opaque-debug v0.3.0
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling pin-project-lite v0.2.0
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling cpuid-bool v0.1.2
[INFO] [stderr]    Compiling rustc-ap-rustc_graphviz v693.0.0
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling scoped-tls v1.0.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_graphviz-693.0.0/src/lib.rs:278:1
[INFO] [stdout]     |
[INFO] [stdout] 278 | #![feature(nll)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/smallvec-1.5.1/src/lib.rs:74:32
[INFO] [stdout]    |
[INFO] [stdout] 74 | #![cfg_attr(feature = "union", feature(untagged_unions))]
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/smallvec-1.5.1/src/lib.rs:77:37
[INFO] [stdout]    |
[INFO] [stdout] 77 | #![cfg_attr(feature = "may_dangle", feature(dropck_eyepatch))]
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling annotate-snippets v0.8.0
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling rustc-ap-rustc_fs_util v693.0.0
[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 `rustc-ap-rustc_graphviz`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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: build failed
[INFO] running `Command { std: "docker" "inspect" "ab4f3c94ee099b7c59d722de2c9636afbac50f0242673c9cb8cdff9fb92d0363", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab4f3c94ee099b7c59d722de2c9636afbac50f0242673c9cb8cdff9fb92d0363", kill_on_drop: false }`
[INFO] [stdout] ab4f3c94ee099b7c59d722de2c9636afbac50f0242673c9cb8cdff9fb92d0363