[INFO] cloning repository https://github.com/terciodemelo/rtasks
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/terciodemelo/rtasks" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fterciodemelo%2Frtasks", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fterciodemelo%2Frtasks'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1652881dc72fad570036ddd83c84f264ac2643e0
[INFO] testing terciodemelo/rtasks against beta-2021-08-01 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fterciodemelo%2Frtasks" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/terciodemelo/rtasks on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/terciodemelo/rtasks
[INFO] finished tweaking git repo https://github.com/terciodemelo/rtasks
[INFO] tweaked toml for git repo https://github.com/terciodemelo/rtasks written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/terciodemelo/rtasks already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", 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] 7c69295bbccde8e5f7c3b3f86a8e0b18fad739502c2279a2d06bee1ecbe3d8e1
[INFO] running `Command { std: "docker" "start" "-a" "7c69295bbccde8e5f7c3b3f86a8e0b18fad739502c2279a2d06bee1ecbe3d8e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7c69295bbccde8e5f7c3b3f86a8e0b18fad739502c2279a2d06bee1ecbe3d8e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c69295bbccde8e5f7c3b3f86a8e0b18fad739502c2279a2d06bee1ecbe3d8e1", kill_on_drop: false }`
[INFO] [stdout] 7c69295bbccde8e5f7c3b3f86a8e0b18fad739502c2279a2d06bee1ecbe3d8e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9282bd4ca286f635deadad08fc593853aea3b1f6ef156c021a11a7fe68204123
[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" "9282bd4ca286f635deadad08fc593853aea3b1f6ef156c021a11a7fe68204123", kill_on_drop: false }`
[INFO] [stderr]    Compiling time v0.1.41
[INFO] [stderr]    Compiling rand v0.5.5
[INFO] [stderr]    Compiling termion v1.5.1
[INFO] [stderr]    Compiling dirs v1.0.4
[INFO] [stderr]    Compiling syn v0.15.23
[INFO] [stderr]    Compiling chrono v0.4.6
[INFO] [stderr]    Compiling uuid v0.7.1
[INFO] [stderr]    Compiling serde_derive v1.0.83
[INFO] [stderr]    Compiling rtasks v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(box_syntax, box_patterns)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:120:59
[INFO] [stdout]     |
[INFO] [stdout] 120 | fn numbered_row<'a>(row: u16, focused_row: u16, content: &Listable) -> String {
[INFO] [stdout]     |                                                           ^^^^^^^^ help: use `dyn`: `dyn Listable`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rtasks` due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "9282bd4ca286f635deadad08fc593853aea3b1f6ef156c021a11a7fe68204123", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9282bd4ca286f635deadad08fc593853aea3b1f6ef156c021a11a7fe68204123", kill_on_drop: false }`
[INFO] [stdout] 9282bd4ca286f635deadad08fc593853aea3b1f6ef156c021a11a7fe68204123
