[INFO] crate ktm5e-dice 0.1.0 is already in cache
[INFO] testing ktm5e-dice-0.1.0 against 1.38.0 for beta-1.39-1
[INFO] extracting crate ktm5e-dice 0.1.0 into work/builds/worker-6/source
[INFO] validating manifest of crates.io crate ktm5e-dice 0.1.0 on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[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 work/builds/worker-6/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 54ed5cdc3fd06ddd20502df907f831d50908fd9889f73c3c1ea9b18fcb76e662
[INFO] running `"docker" "start" "-a" "54ed5cdc3fd06ddd20502df907f831d50908fd9889f73c3c1ea9b18fcb76e662"`
[INFO] [stderr]    Compiling ktm5e-dice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]   --> src/lib.rs:17:1
[INFO] [stderr]    |
[INFO] [stderr] 17 | #![feature(conservative_impl_trait, i128_type)]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/syntax/lexer.rs:123:21
[INFO] [stderr]     |
[INFO] [stderr] 123 |                 '0' ... '9' => self.lex_integer(),
[INFO] [stderr]     |                     ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:102:34
[INFO] [stderr]     |
[INFO] [stderr] 102 |     pub fn roll(&self, rng: &mut Rng) -> Option<i32> {
[INFO] [stderr]     |                                  ^^^ help: use `dyn`: `dyn Rng`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:192:34
[INFO] [stderr]     |
[INFO] [stderr] 192 |     pub fn roll(&self, rng: &mut Rng, reroll: Option<Reroll>, fold: Fold) -> DiceResult {
[INFO] [stderr]     |                                  ^^^ help: use `dyn`: `dyn Rng`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:225:34
[INFO] [stderr]     |
[INFO] [stderr] 225 |     pub fn roll(&self, rng: &mut Rng, reroll: Option<Reroll>) -> DieResult {
[INFO] [stderr]     |                                  ^^^ help: use `dyn`: `dyn Rng`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:270:23
[INFO] [stderr]     |
[INFO] [stderr] 270 | fn generate(rng: &mut Rng, minimum: u32, maximum: u32) -> u32 {
[INFO] [stderr]     |                       ^^^ help: use `dyn`: `dyn Rng`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `ktm5e-dice`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "54ed5cdc3fd06ddd20502df907f831d50908fd9889f73c3c1ea9b18fcb76e662"`
[INFO] running `"docker" "rm" "-f" "54ed5cdc3fd06ddd20502df907f831d50908fd9889f73c3c1ea9b18fcb76e662"`
[INFO] [stdout] 54ed5cdc3fd06ddd20502df907f831d50908fd9889f73c3c1ea9b18fcb76e662