[INFO] cloning repository https://github.com/MoonL1ght/Rust-Markov-Chain
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MoonL1ght/Rust-Markov-Chain" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMoonL1ght%2FRust-Markov-Chain", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMoonL1ght%2FRust-Markov-Chain'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 861e76396c56712e12bf2265597ecccc678b64bf
[INFO] testing MoonL1ght/Rust-Markov-Chain against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMoonL1ght%2FRust-Markov-Chain" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MoonL1ght/Rust-Markov-Chain on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/MoonL1ght/Rust-Markov-Chain
[INFO] finished tweaking git repo https://github.com/MoonL1ght/Rust-Markov-Chain
[INFO] tweaked toml for git repo https://github.com/MoonL1ght/Rust-Markov-Chain written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/MoonL1ght/Rust-Markov-Chain already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9046460e8723848e200ae0afb15699de9a57a92af1c3a8593cafd5f58c6fba6e
[INFO] running `Command { std: "docker" "start" "-a" "9046460e8723848e200ae0afb15699de9a57a92af1c3a8593cafd5f58c6fba6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9046460e8723848e200ae0afb15699de9a57a92af1c3a8593cafd5f58c6fba6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9046460e8723848e200ae0afb15699de9a57a92af1c3a8593cafd5f58c6fba6e", kill_on_drop: false }`
[INFO] [stdout] 9046460e8723848e200ae0afb15699de9a57a92af1c3a8593cafd5f58c6fba6e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 70d502bd756935981ffce1a1ac506d909155cc0ae7f008694e7d7eaafb0cfc5a
[INFO] running `Command { std: "docker" "start" "-a" "70d502bd756935981ffce1a1ac506d909155cc0ae7f008694e7d7eaafb0cfc5a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.21 (/opt/rustwide/workdir/libs/libc)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> libs/libc/src/unix/notbsd/mod.rs:313:36
[INFO] [stdout]     |
[INFO] [stdout] 313 | pub const LC_CTYPE_MASK: ::c_int = (1 << LC_CTYPE);
[INFO] [stdout]     |                                    ^             ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 313 - pub const LC_CTYPE_MASK: ::c_int = (1 << LC_CTYPE);
[INFO] [stdout] 313 + pub const LC_CTYPE_MASK: ::c_int = 1 << LC_CTYPE;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> libs/libc/src/unix/notbsd/mod.rs:314:38
[INFO] [stdout]     |
[INFO] [stdout] 314 | pub const LC_NUMERIC_MASK: ::c_int = (1 << LC_NUMERIC);
[INFO] [stdout]     |                                      ^               ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 314 - pub const LC_NUMERIC_MASK: ::c_int = (1 << LC_NUMERIC);
[INFO] [stdout] 314 + pub const LC_NUMERIC_MASK: ::c_int = 1 << LC_NUMERIC;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> libs/libc/src/unix/notbsd/mod.rs:315:35
[INFO] [stdout]     |
[INFO] [stdout] 315 | pub const LC_TIME_MASK: ::c_int = (1 << LC_TIME);
[INFO] [stdout]     |                                   ^            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 315 - pub const LC_TIME_MASK: ::c_int = (1 << LC_TIME);
[INFO] [stdout] 315 + pub const LC_TIME_MASK: ::c_int = 1 << LC_TIME;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> libs/libc/src/unix/notbsd/mod.rs:316:38
[INFO] [stdout]     |
[INFO] [stdout] 316 | pub const LC_COLLATE_MASK: ::c_int = (1 << LC_COLLATE);
[INFO] [stdout]     |                                      ^               ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 316 - pub const LC_COLLATE_MASK: ::c_int = (1 << LC_COLLATE);
[INFO] [stdout] 316 + pub const LC_COLLATE_MASK: ::c_int = 1 << LC_COLLATE;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> libs/libc/src/unix/notbsd/mod.rs:317:39
[INFO] [stdout]     |
[INFO] [stdout] 317 | pub const LC_MONETARY_MASK: ::c_int = (1 << LC_MONETARY);
[INFO] [stdout]     |                                       ^                ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 317 - pub const LC_MONETARY_MASK: ::c_int = (1 << LC_MONETARY);
[INFO] [stdout] 317 + pub const LC_MONETARY_MASK: ::c_int = 1 << LC_MONETARY;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> libs/libc/src/unix/notbsd/mod.rs:318:39
[INFO] [stdout]     |
[INFO] [stdout] 318 | pub const LC_MESSAGES_MASK: ::c_int = (1 << LC_MESSAGES);
[INFO] [stdout]     |                                       ^                ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 318 - pub const LC_MESSAGES_MASK: ::c_int = (1 << LC_MESSAGES);
[INFO] [stdout] 318 + pub const LC_MESSAGES_MASK: ::c_int = 1 << LC_MESSAGES;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> libs/libc/src/macros.rs:58:21
[INFO] [stdout]    |
[INFO] [stdout] 58 |             $($body);*
[INFO] [stdout]    |                     ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> libs/libc/src/unix/notbsd/linux/other/mod.rs:213:36
[INFO] [stdout]     |
[INFO] [stdout] 213 | pub const LC_PAPER_MASK: ::c_int = (1 << LC_PAPER);
[INFO] [stdout]     |                                    ^             ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 213 - pub const LC_PAPER_MASK: ::c_int = (1 << LC_PAPER);
[INFO] [stdout] 213 + pub const LC_PAPER_MASK: ::c_int = 1 << LC_PAPER;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> libs/libc/src/unix/notbsd/linux/other/mod.rs:214:35
[INFO] [stdout]     |
[INFO] [stdout] 214 | pub const LC_NAME_MASK: ::c_int = (1 << LC_NAME);
[INFO] [stdout]     |                                   ^            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 214 - pub const LC_NAME_MASK: ::c_int = (1 << LC_NAME);
[INFO] [stdout] 214 + pub const LC_NAME_MASK: ::c_int = 1 << LC_NAME;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> libs/libc/src/unix/notbsd/linux/other/mod.rs:215:38
[INFO] [stdout]     |
[INFO] [stdout] 215 | pub const LC_ADDRESS_MASK: ::c_int = (1 << LC_ADDRESS);
[INFO] [stdout]     |                                      ^               ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 215 - pub const LC_ADDRESS_MASK: ::c_int = (1 << LC_ADDRESS);
[INFO] [stdout] 215 + pub const LC_ADDRESS_MASK: ::c_int = 1 << LC_ADDRESS;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> libs/libc/src/unix/notbsd/linux/other/mod.rs:216:40
[INFO] [stdout]     |
[INFO] [stdout] 216 | pub const LC_TELEPHONE_MASK: ::c_int = (1 << LC_TELEPHONE);
[INFO] [stdout]     |                                        ^                 ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 216 - pub const LC_TELEPHONE_MASK: ::c_int = (1 << LC_TELEPHONE);
[INFO] [stdout] 216 + pub const LC_TELEPHONE_MASK: ::c_int = 1 << LC_TELEPHONE;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> libs/libc/src/unix/notbsd/linux/other/mod.rs:217:42
[INFO] [stdout]     |
[INFO] [stdout] 217 | pub const LC_MEASUREMENT_MASK: ::c_int = (1 << LC_MEASUREMENT);
[INFO] [stdout]     |                                          ^                   ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 217 - pub const LC_MEASUREMENT_MASK: ::c_int = (1 << LC_MEASUREMENT);
[INFO] [stdout] 217 + pub const LC_MEASUREMENT_MASK: ::c_int = 1 << LC_MEASUREMENT;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> libs/libc/src/unix/notbsd/linux/other/mod.rs:218:45
[INFO] [stdout]     |
[INFO] [stdout] 218 | pub const LC_IDENTIFICATION_MASK: ::c_int = (1 << LC_IDENTIFICATION);
[INFO] [stdout]     |                                             ^                      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 218 - pub const LC_IDENTIFICATION_MASK: ::c_int = (1 << LC_IDENTIFICATION);
[INFO] [stdout] 218 + pub const LC_IDENTIFICATION_MASK: ::c_int = 1 << LC_IDENTIFICATION;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rand v0.3.15 (/opt/rustwide/workdir/libs/rand)
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> libs/rand/src/distributions/gamma.rs:107:17
[INFO] [stdout]     |
[INFO] [stdout] 107 |             0.0 ... 1.0 => Small(GammaSmallShape::new_raw(shape, scale)),
[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: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> libs/rand/src/distributions/mod.rs:51:34
[INFO] [stdout]    |
[INFO] [stdout] 51 |     fn ind_sample<R: Rng>(&self, &mut R) -> Support;
[INFO] [stdout]    |                                  ^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut R`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> libs/rand/src/os.rs:188:26
[INFO] [stdout]     |
[INFO] [stdout] 188 |             let reader = try!(File::open("/dev/urandom"));
[INFO] [stdout]     |                          ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> libs/rand/src/read.rs:70:15
[INFO] [stdout]    |
[INFO] [stdout] 70 |         match try!(r.read(buf)) {
[INFO] [stdout]    |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> libs/rand/src/lib.rs:668:26
[INFO] [stdout]     |
[INFO] [stdout] 668 |     fn reseed(&mut self, Seed);
[INFO] [stdout]     |                          ^^^^ help: try naming the parameter or explicitly ignoring it: `_: Seed`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::atomic::ATOMIC_BOOL_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> libs/rand/src/os.rs:144:45
[INFO] [stdout]     |
[INFO] [stdout] 144 |         use std::sync::atomic::{AtomicBool, ATOMIC_BOOL_INIT, Ordering};
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> libs/rand/src/os.rs:145:31
[INFO] [stdout]     |
[INFO] [stdout] 145 |         use std::sync::{Once, ONCE_INIT};
[INFO] [stdout]     |                               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> libs/rand/src/os.rs:147:32
[INFO] [stdout]     |
[INFO] [stdout] 147 |         static CHECKER: Once = ONCE_INIT;
[INFO] [stdout]     |                                ^^^^^^^^^ help: replace the use of the deprecated constant: `Once::new()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::atomic::ATOMIC_BOOL_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> libs/rand/src/os.rs:148:40
[INFO] [stdout]     |
[INFO] [stdout] 148 |         static AVAILABLE: AtomicBool = ATOMIC_BOOL_INIT;
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^^^^ help: replace the use of the deprecated constant: `AtomicBool::new(false)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> libs/rand/src/os.rs:56:32
[INFO] [stdout]    |
[INFO] [stdout] 56 | fn next_u32(mut fill_buf: &mut FnMut(&mut [u8])) -> u32 {
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^
[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] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 56 - fn next_u32(mut fill_buf: &mut FnMut(&mut [u8])) -> u32 {
[INFO] [stdout] 56 + fn next_u32(mut fill_buf: &mut dyn FnMut(&mut [u8])) -> u32 {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> libs/rand/src/os.rs:62:32
[INFO] [stdout]    |
[INFO] [stdout] 62 | fn next_u64(mut fill_buf: &mut FnMut(&mut [u8])) -> u64 {
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^
[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] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 62 - fn next_u64(mut fill_buf: &mut FnMut(&mut [u8])) -> u64 {
[INFO] [stdout] 62 + fn next_u64(mut fill_buf: &mut dyn FnMut(&mut [u8])) -> u64 {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> libs/rand/src/read.rs:68:17
[INFO] [stdout]    |
[INFO] [stdout] 68 | fn fill(r: &mut Read, mut buf: &mut [u8]) -> io::Result<()> {
[INFO] [stdout]    |                 ^^^^
[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] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 68 - fn fill(r: &mut Read, mut buf: &mut [u8]) -> io::Result<()> {
[INFO] [stdout] 68 + fn fill(r: &mut dyn Read, mut buf: &mut [u8]) -> io::Result<()> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: floating-point types cannot be used in patterns
[INFO] [stdout]    --> libs/rand/src/distributions/gamma.rs:106:13
[INFO] [stdout]     |
[INFO] [stdout] 106 |             1.0         => One(Exp::new(1.0 / scale)),
[INFO] [stdout]     |             ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(illegal_floating_point_literal_pattern)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #41620 <https://github.com/rust-lang/rust/issues/41620>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: floating-point types cannot be used in patterns
[INFO] [stdout]    --> libs/rand/src/distributions/gamma.rs:107:13
[INFO] [stdout]     |
[INFO] [stdout] 107 |             0.0 ... 1.0 => Small(GammaSmallShape::new_raw(shape, scale)),
[INFO] [stdout]     |             ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #41620 <https://github.com/rust-lang/rust/issues/41620>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: floating-point types cannot be used in patterns
[INFO] [stdout]    --> libs/rand/src/distributions/gamma.rs:107:21
[INFO] [stdout]     |
[INFO] [stdout] 107 |             0.0 ... 1.0 => Small(GammaSmallShape::new_raw(shape, scale)),
[INFO] [stdout]     |                     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #41620 <https://github.com/rust-lang/rust/issues/41620>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> libs/rand/src/os.rs:56:13
[INFO] [stdout]    |
[INFO] [stdout] 56 | fn next_u32(mut fill_buf: &mut FnMut(&mut [u8])) -> u32 {
[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]   --> libs/rand/src/os.rs:62:13
[INFO] [stdout]    |
[INFO] [stdout] 62 | fn next_u64(mut fill_buf: &mut FnMut(&mut [u8])) -> u64 {
[INFO] [stdout]    |             ----^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling markov_chain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/main.rs:127:25
[INFO] [stdout]     |
[INFO] [stdout] 127 |             panic!("{:?}", error.description());
[INFO] [stdout]     |                                  ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` 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 2.94s
[INFO] running `Command { std: "docker" "inspect" "70d502bd756935981ffce1a1ac506d909155cc0ae7f008694e7d7eaafb0cfc5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70d502bd756935981ffce1a1ac506d909155cc0ae7f008694e7d7eaafb0cfc5a", kill_on_drop: false }`
[INFO] [stdout] 70d502bd756935981ffce1a1ac506d909155cc0ae7f008694e7d7eaafb0cfc5a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d88b97f36d9ce5778c1ff9959b9a5f5b4d3690669444951f014883dc47ebcbae
[INFO] running `Command { std: "docker" "start" "-a" "d88b97f36d9ce5778c1ff9959b9a5f5b4d3690669444951f014883dc47ebcbae", kill_on_drop: false }`
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> libs/libc/src/unix/notbsd/mod.rs:313:36
[INFO] [stdout]     |
[INFO] [stdout] 313 | pub const LC_CTYPE_MASK: ::c_int = (1 << LC_CTYPE);
[INFO] [stdout]     |                                    ^             ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 313 - pub const LC_CTYPE_MASK: ::c_int = (1 << LC_CTYPE);
[INFO] [stdout] 313 + pub const LC_CTYPE_MASK: ::c_int = 1 << LC_CTYPE;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> libs/libc/src/unix/notbsd/mod.rs:314:38
[INFO] [stdout]     |
[INFO] [stdout] 314 | pub const LC_NUMERIC_MASK: ::c_int = (1 << LC_NUMERIC);
[INFO] [stdout]     |                                      ^               ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 314 - pub const LC_NUMERIC_MASK: ::c_int = (1 << LC_NUMERIC);
[INFO] [stdout] 314 + pub const LC_NUMERIC_MASK: ::c_int = 1 << LC_NUMERIC;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> libs/libc/src/unix/notbsd/mod.rs:315:35
[INFO] [stdout]     |
[INFO] [stdout] 315 | pub const LC_TIME_MASK: ::c_int = (1 << LC_TIME);
[INFO] [stdout]     |                                   ^            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 315 - pub const LC_TIME_MASK: ::c_int = (1 << LC_TIME);
[INFO] [stdout] 315 + pub const LC_TIME_MASK: ::c_int = 1 << LC_TIME;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> libs/libc/src/unix/notbsd/mod.rs:316:38
[INFO] [stdout]     |
[INFO] [stdout] 316 | pub const LC_COLLATE_MASK: ::c_int = (1 << LC_COLLATE);
[INFO] [stdout]     |                                      ^               ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 316 - pub const LC_COLLATE_MASK: ::c_int = (1 << LC_COLLATE);
[INFO] [stdout] 316 + pub const LC_COLLATE_MASK: ::c_int = 1 << LC_COLLATE;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> libs/libc/src/unix/notbsd/mod.rs:317:39
[INFO] [stdout]     |
[INFO] [stdout] 317 | pub const LC_MONETARY_MASK: ::c_int = (1 << LC_MONETARY);
[INFO] [stdout]     |                                       ^                ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 317 - pub const LC_MONETARY_MASK: ::c_int = (1 << LC_MONETARY);
[INFO] [stdout] 317 + pub const LC_MONETARY_MASK: ::c_int = 1 << LC_MONETARY;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> libs/libc/src/unix/notbsd/mod.rs:318:39
[INFO] [stdout]     |
[INFO] [stdout] 318 | pub const LC_MESSAGES_MASK: ::c_int = (1 << LC_MESSAGES);
[INFO] [stdout]     |                                       ^                ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 318 - pub const LC_MESSAGES_MASK: ::c_int = (1 << LC_MESSAGES);
[INFO] [stdout] 318 + pub const LC_MESSAGES_MASK: ::c_int = 1 << LC_MESSAGES;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> libs/libc/src/macros.rs:58:21
[INFO] [stdout]    |
[INFO] [stdout] 58 |             $($body);*
[INFO] [stdout]    |                     ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling markov_chain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> libs/libc/src/unix/notbsd/linux/other/mod.rs:213:36
[INFO] [stdout]     |
[INFO] [stdout] 213 | pub const LC_PAPER_MASK: ::c_int = (1 << LC_PAPER);
[INFO] [stdout]     |                                    ^             ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 213 - pub const LC_PAPER_MASK: ::c_int = (1 << LC_PAPER);
[INFO] [stdout] 213 + pub const LC_PAPER_MASK: ::c_int = 1 << LC_PAPER;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> libs/libc/src/unix/notbsd/linux/other/mod.rs:214:35
[INFO] [stdout]     |
[INFO] [stdout] 214 | pub const LC_NAME_MASK: ::c_int = (1 << LC_NAME);
[INFO] [stdout]     |                                   ^            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 214 - pub const LC_NAME_MASK: ::c_int = (1 << LC_NAME);
[INFO] [stdout] 214 + pub const LC_NAME_MASK: ::c_int = 1 << LC_NAME;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> libs/libc/src/unix/notbsd/linux/other/mod.rs:215:38
[INFO] [stdout]     |
[INFO] [stdout] 215 | pub const LC_ADDRESS_MASK: ::c_int = (1 << LC_ADDRESS);
[INFO] [stdout]     |                                      ^               ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 215 - pub const LC_ADDRESS_MASK: ::c_int = (1 << LC_ADDRESS);
[INFO] [stdout] 215 + pub const LC_ADDRESS_MASK: ::c_int = 1 << LC_ADDRESS;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> libs/libc/src/unix/notbsd/linux/other/mod.rs:216:40
[INFO] [stdout]     |
[INFO] [stdout] 216 | pub const LC_TELEPHONE_MASK: ::c_int = (1 << LC_TELEPHONE);
[INFO] [stdout]     |                                        ^                 ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 216 - pub const LC_TELEPHONE_MASK: ::c_int = (1 << LC_TELEPHONE);
[INFO] [stdout] 216 + pub const LC_TELEPHONE_MASK: ::c_int = 1 << LC_TELEPHONE;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> libs/libc/src/unix/notbsd/linux/other/mod.rs:217:42
[INFO] [stdout]     |
[INFO] [stdout] 217 | pub const LC_MEASUREMENT_MASK: ::c_int = (1 << LC_MEASUREMENT);
[INFO] [stdout]     |                                          ^                   ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 217 - pub const LC_MEASUREMENT_MASK: ::c_int = (1 << LC_MEASUREMENT);
[INFO] [stdout] 217 + pub const LC_MEASUREMENT_MASK: ::c_int = 1 << LC_MEASUREMENT;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> libs/libc/src/unix/notbsd/linux/other/mod.rs:218:45
[INFO] [stdout]     |
[INFO] [stdout] 218 | pub const LC_IDENTIFICATION_MASK: ::c_int = (1 << LC_IDENTIFICATION);
[INFO] [stdout]     |                                             ^                      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 218 - pub const LC_IDENTIFICATION_MASK: ::c_int = (1 << LC_IDENTIFICATION);
[INFO] [stdout] 218 + pub const LC_IDENTIFICATION_MASK: ::c_int = 1 << LC_IDENTIFICATION;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> libs/rand/src/distributions/gamma.rs:107:17
[INFO] [stdout]     |
[INFO] [stdout] 107 |             0.0 ... 1.0 => Small(GammaSmallShape::new_raw(shape, scale)),
[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: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> libs/rand/src/distributions/mod.rs:51:34
[INFO] [stdout]    |
[INFO] [stdout] 51 |     fn ind_sample<R: Rng>(&self, &mut R) -> Support;
[INFO] [stdout]    |                                  ^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut R`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> libs/rand/src/os.rs:188:26
[INFO] [stdout]     |
[INFO] [stdout] 188 |             let reader = try!(File::open("/dev/urandom"));
[INFO] [stdout]     |                          ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> libs/rand/src/read.rs:70:15
[INFO] [stdout]    |
[INFO] [stdout] 70 |         match try!(r.read(buf)) {
[INFO] [stdout]    |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> libs/rand/src/lib.rs:668:26
[INFO] [stdout]     |
[INFO] [stdout] 668 |     fn reseed(&mut self, Seed);
[INFO] [stdout]     |                          ^^^^ help: try naming the parameter or explicitly ignoring it: `_: Seed`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::atomic::ATOMIC_BOOL_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> libs/rand/src/os.rs:144:45
[INFO] [stdout]     |
[INFO] [stdout] 144 |         use std::sync::atomic::{AtomicBool, ATOMIC_BOOL_INIT, Ordering};
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> libs/rand/src/os.rs:145:31
[INFO] [stdout]     |
[INFO] [stdout] 145 |         use std::sync::{Once, ONCE_INIT};
[INFO] [stdout]     |                               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> libs/rand/src/os.rs:147:32
[INFO] [stdout]     |
[INFO] [stdout] 147 |         static CHECKER: Once = ONCE_INIT;
[INFO] [stdout]     |                                ^^^^^^^^^ help: replace the use of the deprecated constant: `Once::new()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::atomic::ATOMIC_BOOL_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> libs/rand/src/os.rs:148:40
[INFO] [stdout]     |
[INFO] [stdout] 148 |         static AVAILABLE: AtomicBool = ATOMIC_BOOL_INIT;
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^^^^ help: replace the use of the deprecated constant: `AtomicBool::new(false)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> libs/rand/src/os.rs:56:32
[INFO] [stdout]    |
[INFO] [stdout] 56 | fn next_u32(mut fill_buf: &mut FnMut(&mut [u8])) -> u32 {
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^
[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] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 56 - fn next_u32(mut fill_buf: &mut FnMut(&mut [u8])) -> u32 {
[INFO] [stdout] 56 + fn next_u32(mut fill_buf: &mut dyn FnMut(&mut [u8])) -> u32 {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> libs/rand/src/os.rs:62:32
[INFO] [stdout]    |
[INFO] [stdout] 62 | fn next_u64(mut fill_buf: &mut FnMut(&mut [u8])) -> u64 {
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^
[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] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 62 - fn next_u64(mut fill_buf: &mut FnMut(&mut [u8])) -> u64 {
[INFO] [stdout] 62 + fn next_u64(mut fill_buf: &mut dyn FnMut(&mut [u8])) -> u64 {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> libs/rand/src/read.rs:68:17
[INFO] [stdout]    |
[INFO] [stdout] 68 | fn fill(r: &mut Read, mut buf: &mut [u8]) -> io::Result<()> {
[INFO] [stdout]    |                 ^^^^
[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] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 68 - fn fill(r: &mut Read, mut buf: &mut [u8]) -> io::Result<()> {
[INFO] [stdout] 68 + fn fill(r: &mut dyn Read, mut buf: &mut [u8]) -> io::Result<()> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: floating-point types cannot be used in patterns
[INFO] [stdout]    --> libs/rand/src/distributions/gamma.rs:106:13
[INFO] [stdout]     |
[INFO] [stdout] 106 |             1.0         => One(Exp::new(1.0 / scale)),
[INFO] [stdout]     |             ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(illegal_floating_point_literal_pattern)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #41620 <https://github.com/rust-lang/rust/issues/41620>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: floating-point types cannot be used in patterns
[INFO] [stdout]    --> libs/rand/src/distributions/gamma.rs:107:13
[INFO] [stdout]     |
[INFO] [stdout] 107 |             0.0 ... 1.0 => Small(GammaSmallShape::new_raw(shape, scale)),
[INFO] [stdout]     |             ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #41620 <https://github.com/rust-lang/rust/issues/41620>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: floating-point types cannot be used in patterns
[INFO] [stdout]    --> libs/rand/src/distributions/gamma.rs:107:21
[INFO] [stdout]     |
[INFO] [stdout] 107 |             0.0 ... 1.0 => Small(GammaSmallShape::new_raw(shape, scale)),
[INFO] [stdout]     |                     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #41620 <https://github.com/rust-lang/rust/issues/41620>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> libs/rand/src/os.rs:56:13
[INFO] [stdout]    |
[INFO] [stdout] 56 | fn next_u32(mut fill_buf: &mut FnMut(&mut [u8])) -> u32 {
[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]   --> libs/rand/src/os.rs:62:13
[INFO] [stdout]    |
[INFO] [stdout] 62 | fn next_u64(mut fill_buf: &mut FnMut(&mut [u8])) -> u64 {
[INFO] [stdout]    |             ----^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/main.rs:127:25
[INFO] [stdout]     |
[INFO] [stdout] 127 |             panic!("{:?}", error.description());
[INFO] [stdout]     |                                  ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.30s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/markov_chain-2ecf749d95068d72)
[INFO] running `Command { std: "docker" "inspect" "d88b97f36d9ce5778c1ff9959b9a5f5b4d3690669444951f014883dc47ebcbae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d88b97f36d9ce5778c1ff9959b9a5f5b4d3690669444951f014883dc47ebcbae", kill_on_drop: false }`
[INFO] [stdout] d88b97f36d9ce5778c1ff9959b9a5f5b4d3690669444951f014883dc47ebcbae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 241fcfcefa6a2b53efb4e71a4d06486d5e1a1776ce1e831be5ab6347ccb1b6fa
[INFO] running `Command { std: "docker" "start" "-a" "241fcfcefa6a2b53efb4e71a4d06486d5e1a1776ce1e831be5ab6347ccb1b6fa", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> libs/libc/src/unix/notbsd/mod.rs:313:36
[INFO] [stderr]     |
[INFO] [stderr] 313 | pub const LC_CTYPE_MASK: ::c_int = (1 << LC_CTYPE);
[INFO] [stderr]     |                                    ^             ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 313 - pub const LC_CTYPE_MASK: ::c_int = (1 << LC_CTYPE);
[INFO] [stderr] 313 + pub const LC_CTYPE_MASK: ::c_int = 1 << LC_CTYPE;
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> libs/libc/src/unix/notbsd/mod.rs:314:38
[INFO] [stderr]     |
[INFO] [stderr] 314 | pub const LC_NUMERIC_MASK: ::c_int = (1 << LC_NUMERIC);
[INFO] [stderr]     |                                      ^               ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 314 - pub const LC_NUMERIC_MASK: ::c_int = (1 << LC_NUMERIC);
[INFO] [stderr] 314 + pub const LC_NUMERIC_MASK: ::c_int = 1 << LC_NUMERIC;
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> libs/libc/src/unix/notbsd/mod.rs:315:35
[INFO] [stderr]     |
[INFO] [stderr] 315 | pub const LC_TIME_MASK: ::c_int = (1 << LC_TIME);
[INFO] [stderr]     |                                   ^            ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 315 - pub const LC_TIME_MASK: ::c_int = (1 << LC_TIME);
[INFO] [stderr] 315 + pub const LC_TIME_MASK: ::c_int = 1 << LC_TIME;
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> libs/libc/src/unix/notbsd/mod.rs:316:38
[INFO] [stderr]     |
[INFO] [stderr] 316 | pub const LC_COLLATE_MASK: ::c_int = (1 << LC_COLLATE);
[INFO] [stderr]     |                                      ^               ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 316 - pub const LC_COLLATE_MASK: ::c_int = (1 << LC_COLLATE);
[INFO] [stderr] 316 + pub const LC_COLLATE_MASK: ::c_int = 1 << LC_COLLATE;
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> libs/libc/src/unix/notbsd/mod.rs:317:39
[INFO] [stderr]     |
[INFO] [stderr] 317 | pub const LC_MONETARY_MASK: ::c_int = (1 << LC_MONETARY);
[INFO] [stderr]     |                                       ^                ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 317 - pub const LC_MONETARY_MASK: ::c_int = (1 << LC_MONETARY);
[INFO] [stderr] 317 + pub const LC_MONETARY_MASK: ::c_int = 1 << LC_MONETARY;
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> libs/libc/src/unix/notbsd/mod.rs:318:39
[INFO] [stderr]     |
[INFO] [stderr] 318 | pub const LC_MESSAGES_MASK: ::c_int = (1 << LC_MESSAGES);
[INFO] [stderr]     |                                       ^                ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 318 - pub const LC_MESSAGES_MASK: ::c_int = (1 << LC_MESSAGES);
[INFO] [stderr] 318 + pub const LC_MESSAGES_MASK: ::c_int = 1 << LC_MESSAGES;
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]   --> libs/libc/src/macros.rs:58:21
[INFO] [stderr]    |
[INFO] [stderr] 58 |             $($body);*
[INFO] [stderr]    |                     ^ help: remove this semicolon
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> libs/libc/src/unix/notbsd/linux/other/mod.rs:213:36
[INFO] [stderr]     |
[INFO] [stderr] 213 | pub const LC_PAPER_MASK: ::c_int = (1 << LC_PAPER);
[INFO] [stderr]     |                                    ^             ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 213 - pub const LC_PAPER_MASK: ::c_int = (1 << LC_PAPER);
[INFO] [stderr] 213 + pub const LC_PAPER_MASK: ::c_int = 1 << LC_PAPER;
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> libs/libc/src/unix/notbsd/linux/other/mod.rs:214:35
[INFO] [stderr]     |
[INFO] [stderr] 214 | pub const LC_NAME_MASK: ::c_int = (1 << LC_NAME);
[INFO] [stderr]     |                                   ^            ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 214 - pub const LC_NAME_MASK: ::c_int = (1 << LC_NAME);
[INFO] [stderr] 214 + pub const LC_NAME_MASK: ::c_int = 1 << LC_NAME;
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> libs/libc/src/unix/notbsd/linux/other/mod.rs:215:38
[INFO] [stderr]     |
[INFO] [stderr] 215 | pub const LC_ADDRESS_MASK: ::c_int = (1 << LC_ADDRESS);
[INFO] [stderr]     |                                      ^               ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 215 - pub const LC_ADDRESS_MASK: ::c_int = (1 << LC_ADDRESS);
[INFO] [stderr] 215 + pub const LC_ADDRESS_MASK: ::c_int = 1 << LC_ADDRESS;
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> libs/libc/src/unix/notbsd/linux/other/mod.rs:216:40
[INFO] [stderr]     |
[INFO] [stderr] 216 | pub const LC_TELEPHONE_MASK: ::c_int = (1 << LC_TELEPHONE);
[INFO] [stderr]     |                                        ^                 ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 216 - pub const LC_TELEPHONE_MASK: ::c_int = (1 << LC_TELEPHONE);
[INFO] [stderr] 216 + pub const LC_TELEPHONE_MASK: ::c_int = 1 << LC_TELEPHONE;
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> libs/libc/src/unix/notbsd/linux/other/mod.rs:217:42
[INFO] [stderr]     |
[INFO] [stderr] 217 | pub const LC_MEASUREMENT_MASK: ::c_int = (1 << LC_MEASUREMENT);
[INFO] [stderr]     |                                          ^                   ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 217 - pub const LC_MEASUREMENT_MASK: ::c_int = (1 << LC_MEASUREMENT);
[INFO] [stderr] 217 + pub const LC_MEASUREMENT_MASK: ::c_int = 1 << LC_MEASUREMENT;
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> libs/libc/src/unix/notbsd/linux/other/mod.rs:218:45
[INFO] [stderr]     |
[INFO] [stderr] 218 | pub const LC_IDENTIFICATION_MASK: ::c_int = (1 << LC_IDENTIFICATION);
[INFO] [stderr]     |                                             ^                      ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 218 - pub const LC_IDENTIFICATION_MASK: ::c_int = (1 << LC_IDENTIFICATION);
[INFO] [stderr] 218 + pub const LC_IDENTIFICATION_MASK: ::c_int = 1 << LC_IDENTIFICATION;
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: `libc` (lib) generated 13 warnings
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> libs/rand/src/distributions/gamma.rs:107:17
[INFO] [stderr]     |
[INFO] [stderr] 107 |             0.0 ... 1.0 => Small(GammaSmallShape::new_raw(shape, scale)),
[INFO] [stderr]     |                 ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stderr]   --> libs/rand/src/distributions/mod.rs:51:34
[INFO] [stderr]    |
[INFO] [stderr] 51 |     fn ind_sample<R: Rng>(&self, &mut R) -> Support;
[INFO] [stderr]    |                                  ^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut R`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stderr]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> libs/rand/src/os.rs:188:26
[INFO] [stderr]     |
[INFO] [stderr] 188 |             let reader = try!(File::open("/dev/urandom"));
[INFO] [stderr]     |                          ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> libs/rand/src/read.rs:70:15
[INFO] [stderr]    |
[INFO] [stderr] 70 |         match try!(r.read(buf)) {
[INFO] [stderr]    |               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stderr]    --> libs/rand/src/lib.rs:668:26
[INFO] [stderr]     |
[INFO] [stderr] 668 |     fn reseed(&mut self, Seed);
[INFO] [stderr]     |                          ^^^^ help: try naming the parameter or explicitly ignoring it: `_: Seed`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stderr]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated constant `std::sync::atomic::ATOMIC_BOOL_INIT`: the `new` function is now preferred
[INFO] [stderr]    --> libs/rand/src/os.rs:144:45
[INFO] [stderr]     |
[INFO] [stderr] 144 |         use std::sync::atomic::{AtomicBool, ATOMIC_BOOL_INIT, Ordering};
[INFO] [stderr]     |                                             ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stderr]    --> libs/rand/src/os.rs:145:31
[INFO] [stderr]     |
[INFO] [stderr] 145 |         use std::sync::{Once, ONCE_INIT};
[INFO] [stderr]     |                               ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stderr]    --> libs/rand/src/os.rs:147:32
[INFO] [stderr]     |
[INFO] [stderr] 147 |         static CHECKER: Once = ONCE_INIT;
[INFO] [stderr]     |                                ^^^^^^^^^ help: replace the use of the deprecated constant: `Once::new()`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated constant `std::sync::atomic::ATOMIC_BOOL_INIT`: the `new` function is now preferred
[INFO] [stderr]    --> libs/rand/src/os.rs:148:40
[INFO] [stderr]     |
[INFO] [stderr] 148 |         static AVAILABLE: AtomicBool = ATOMIC_BOOL_INIT;
[INFO] [stderr]     |                                        ^^^^^^^^^^^^^^^^ help: replace the use of the deprecated constant: `AtomicBool::new(false)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> libs/rand/src/os.rs:56:32
[INFO] [stderr]    |
[INFO] [stderr] 56 | fn next_u32(mut fill_buf: &mut FnMut(&mut [u8])) -> u32 {
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 56 - fn next_u32(mut fill_buf: &mut FnMut(&mut [u8])) -> u32 {
[INFO] [stderr] 56 + fn next_u32(mut fill_buf: &mut dyn FnMut(&mut [u8])) -> u32 {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> libs/rand/src/os.rs:62:32
[INFO] [stderr]    |
[INFO] [stderr] 62 | fn next_u64(mut fill_buf: &mut FnMut(&mut [u8])) -> u64 {
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 62 - fn next_u64(mut fill_buf: &mut FnMut(&mut [u8])) -> u64 {
[INFO] [stderr] 62 + fn next_u64(mut fill_buf: &mut dyn FnMut(&mut [u8])) -> u64 {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout] 
[INFO] [stderr]   --> libs/rand/src/read.rs:68:17
[INFO] [stdout] running 0 tests
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr] 68 | fn fill(r: &mut Read, mut buf: &mut [u8]) -> io::Result<()> {
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]    |                 ^^^^
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 68 - fn fill(r: &mut Read, mut buf: &mut [u8]) -> io::Result<()> {
[INFO] [stderr] 68 + fn fill(r: &mut dyn Read, mut buf: &mut [u8]) -> io::Result<()> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: floating-point types cannot be used in patterns
[INFO] [stderr]    --> libs/rand/src/distributions/gamma.rs:106:13
[INFO] [stderr]     |
[INFO] [stderr] 106 |             1.0         => One(Exp::new(1.0 / scale)),
[INFO] [stderr]     |             ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(illegal_floating_point_literal_pattern)]` on by default
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]     = note: for more information, see issue #41620 <https://github.com/rust-lang/rust/issues/41620>
[INFO] [stderr] 
[INFO] [stderr] warning: floating-point types cannot be used in patterns
[INFO] [stderr]    --> libs/rand/src/distributions/gamma.rs:107:13
[INFO] [stderr]     |
[INFO] [stderr] 107 |             0.0 ... 1.0 => Small(GammaSmallShape::new_raw(shape, scale)),
[INFO] [stderr]     |             ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]     = note: for more information, see issue #41620 <https://github.com/rust-lang/rust/issues/41620>
[INFO] [stderr] 
[INFO] [stderr] warning: floating-point types cannot be used in patterns
[INFO] [stderr]    --> libs/rand/src/distributions/gamma.rs:107:21
[INFO] [stderr]     |
[INFO] [stderr] 107 |             0.0 ... 1.0 => Small(GammaSmallShape::new_raw(shape, scale)),
[INFO] [stderr]     |                     ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]     = note: for more information, see issue #41620 <https://github.com/rust-lang/rust/issues/41620>
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> libs/rand/src/os.rs:56:13
[INFO] [stderr]    |
[INFO] [stderr] 56 | fn next_u32(mut fill_buf: &mut FnMut(&mut [u8])) -> u32 {
[INFO] [stderr]    |             ----^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> libs/rand/src/os.rs:62:13
[INFO] [stderr]    |
[INFO] [stderr] 62 | fn next_u64(mut fill_buf: &mut FnMut(&mut [u8])) -> u64 {
[INFO] [stderr]    |             ----^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: `rand` (lib) generated 17 warnings
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]    --> src/main.rs:127:25
[INFO] [stderr]     |
[INFO] [stderr] 127 |             panic!("{:?}", error.description());
[INFO] [stderr]     |                                  ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `markov_chain` (bin "markov_chain" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/markov_chain-2ecf749d95068d72)
[INFO] running `Command { std: "docker" "inspect" "241fcfcefa6a2b53efb4e71a4d06486d5e1a1776ce1e831be5ab6347ccb1b6fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "241fcfcefa6a2b53efb4e71a4d06486d5e1a1776ce1e831be5ab6347ccb1b6fa", kill_on_drop: false }`
[INFO] [stdout] 241fcfcefa6a2b53efb4e71a4d06486d5e1a1776ce1e831be5ab6347ccb1b6fa