[INFO] fetching crate ktm5e-dice 0.1.0...
[INFO] checking ktm5e-dice-0.1.0 against beta for pr-78714
[INFO] extracting crate ktm5e-dice 0.1.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate ktm5e-dice 0.1.0 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ktm5e-dice 0.1.0
[INFO] finished tweaking crates.io crate ktm5e-dice 0.1.0
[INFO] tweaked toml for crates.io crate ktm5e-dice 0.1.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 713fe71006c7e25d028bd9da5f41d3105f2204a14f35808bc409c53d59227232
[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" "713fe71006c7e25d028bd9da5f41d3105f2204a14f35808bc409c53d59227232", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "713fe71006c7e25d028bd9da5f41d3105f2204a14f35808bc409c53d59227232", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "713fe71006c7e25d028bd9da5f41d3105f2204a14f35808bc409c53d59227232", kill_on_drop: false }`
[INFO] [stdout] 713fe71006c7e25d028bd9da5f41d3105f2204a14f35808bc409c53d59227232
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 41e06fe518eab10b7825bed8003ca41f3172235123c8c2e04b022d05fe18f9a5
[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" "41e06fe518eab10b7825bed8003ca41f3172235123c8c2e04b022d05fe18f9a5", kill_on_drop: false }`
[INFO] [stderr]     Checking microbench v0.3.3
[INFO] [stderr]     Checking ktm5e-dice v0.1.0 (/opt/rustwide/workdir)
[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/microbench-0.3.3/src/lib.rs:68:32
[INFO] [stdout]    |
[INFO] [stdout] 68 | #![cfg_attr(feature="nightly", feature(test))]
[INFO] [stdout]    |                                ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | #![feature(conservative_impl_trait, i128_type)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/syntax/lexer.rs:123:21
[INFO] [stdout]     |
[INFO] [stdout] 123 |                 '0' ... '9' => self.lex_integer(),
[INFO] [stdout]     |                     ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:102:34
[INFO] [stdout]     |
[INFO] [stdout] 102 |     pub fn roll(&self, rng: &mut Rng) -> Option<i32> {
[INFO] [stdout]     |                                  ^^^ help: use `dyn`: `dyn Rng`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:192:34
[INFO] [stdout]     |
[INFO] [stdout] 192 |     pub fn roll(&self, rng: &mut Rng, reroll: Option<Reroll>, fold: Fold) -> DiceResult {
[INFO] [stdout]     |                                  ^^^ help: use `dyn`: `dyn Rng`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:225:34
[INFO] [stdout]     |
[INFO] [stdout] 225 |     pub fn roll(&self, rng: &mut Rng, reroll: Option<Reroll>) -> DieResult {
[INFO] [stdout]     |                                  ^^^ help: use `dyn`: `dyn Rng`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:270:23
[INFO] [stdout]     |
[INFO] [stdout] 270 | fn generate(rng: &mut Rng, minimum: u32, maximum: u32) -> u32 {
[INFO] [stdout]     |                       ^^^ help: use `dyn`: `dyn Rng`
[INFO] [stdout] 
[INFO] [stdout] 
[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 `microbench`
[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 previous error; 5 warnings emitted
[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" "41e06fe518eab10b7825bed8003ca41f3172235123c8c2e04b022d05fe18f9a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41e06fe518eab10b7825bed8003ca41f3172235123c8c2e04b022d05fe18f9a5", kill_on_drop: false }`
[INFO] [stdout] 41e06fe518eab10b7825bed8003ca41f3172235123c8c2e04b022d05fe18f9a5