[INFO] fetching crate ktm5e-dice 0.1.0...
[INFO] checking ktm5e-dice-0.1.0 against try#39e1293fce4b650061e85dda88aa428f726a8444 for pr-88041
[INFO] extracting crate ktm5e-dice 0.1.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate ktm5e-dice 0.1.0 on toolchain 39e1293fce4b650061e85dda88aa428f726a8444
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded microbench v0.3.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d9c36c6b164aae316d6cdcde360d17bcdca2ba36af504aaa2859a6f017befdaf
[INFO] running `Command { std: "docker" "start" "-a" "d9c36c6b164aae316d6cdcde360d17bcdca2ba36af504aaa2859a6f017befdaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d9c36c6b164aae316d6cdcde360d17bcdca2ba36af504aaa2859a6f017befdaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9c36c6b164aae316d6cdcde360d17bcdca2ba36af504aaa2859a6f017befdaf", kill_on_drop: false }`
[INFO] [stdout] d9c36c6b164aae316d6cdcde360d17bcdca2ba36af504aaa2859a6f017befdaf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 182b8d5e0fe60b12b72f10c56a1054197b2fd158cc69132a145d59bbed79f0dc
[INFO] running `Command { std: "docker" "start" "-a" "182b8d5e0fe60b12b72f10c56a1054197b2fd158cc69132a145d59bbed79f0dc", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.99
[INFO] [stderr]     Checking microbench v0.3.3
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking ktm5e-dice v0.1.0 (/opt/rustwide/workdir)
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/syntax/mod.rs:59:19
[INFO] [stdout]    |
[INFO] [stdout] 59 |     fn fmt(&self, mut formatter: &mut fmt::Formatter) -> fmt::Result {
[INFO] [stdout]    |                   ----^^^^^^^^^
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/syntax/mod.rs:84:19
[INFO] [stdout]    |
[INFO] [stdout] 84 |     fn fmt(&self, mut formatter: &mut fmt::Formatter) -> fmt::Result {
[INFO] [stdout]    |                   ----^^^^^^^^^
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | #![feature(conservative_impl_trait, i128_type)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `i128_type` has been stable since 1.26.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:17:37
[INFO] [stdout]    |
[INFO] [stdout] 17 | #![feature(conservative_impl_trait, i128_type)]
[INFO] [stdout]    |                                     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/syntax/mod.rs:59:19
[INFO] [stdout]    |
[INFO] [stdout] 59 |     fn fmt(&self, mut formatter: &mut fmt::Formatter) -> fmt::Result {
[INFO] [stdout]    |                   ----^^^^^^^^^
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/syntax/mod.rs:84:19
[INFO] [stdout]    |
[INFO] [stdout] 84 |     fn fmt(&self, mut formatter: &mut fmt::Formatter) -> fmt::Result {
[INFO] [stdout]    |                   ----^^^^^^^^^
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | #![feature(conservative_impl_trait, i128_type)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `i128_type` has been stable since 1.26.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:17:37
[INFO] [stdout]    |
[INFO] [stdout] 17 | #![feature(conservative_impl_trait, i128_type)]
[INFO] [stdout]    |                                     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `i128_type` has been stable since 1.26.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> tests/statistics.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | #![feature(i128_type)]
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.61s
[INFO] running `Command { std: "docker" "inspect" "182b8d5e0fe60b12b72f10c56a1054197b2fd158cc69132a145d59bbed79f0dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "182b8d5e0fe60b12b72f10c56a1054197b2fd158cc69132a145d59bbed79f0dc", kill_on_drop: false }`
[INFO] [stdout] 182b8d5e0fe60b12b72f10c56a1054197b2fd158cc69132a145d59bbed79f0dc