[INFO] updating cached repository https://github.com/arthurprs/rust-optimized-inttostr
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 56400b3908436b4b630da47ec66738a266d39fef
[INFO] checking arthurprs/rust-optimized-inttostr against master#bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc for pr-70917
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farthurprs%2Frust-optimized-inttostr" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/arthurprs/rust-optimized-inttostr on toolchain bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/arthurprs/rust-optimized-inttostr
[INFO] finished tweaking git repo https://github.com/arthurprs/rust-optimized-inttostr
[INFO] tweaked toml for git repo https://github.com/arthurprs/rust-optimized-inttostr written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/arthurprs/rust-optimized-inttostr already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] error: the lock file /workspace/builds/worker-2/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 1a20234dc4d620d9a247b353703311a311638f4e758b18b75132dfc0696e60b3
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "1a20234dc4d620d9a247b353703311a311638f4e758b18b75132dfc0696e60b3"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking int v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0557]: feature has been removed
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(custom_derive)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^ feature has been removed
[INFO] [stderr]   |
[INFO] [stderr]   = note: subsumed by `#[proc_macro_derive]`
[INFO] [stderr] 
[INFO] [stderr] error[E0557]: feature has been removed
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(custom_derive)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^ feature has been removed
[INFO] [stderr]   |
[INFO] [stderr]   = note: subsumed by `#[proc_macro_derive]`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `rand::StdRng`
[INFO] [stderr]   --> src/main.rs:11:31
[INFO] [stderr]    |
[INFO] [stderr] 11 |     use rand::{Rng, SeedableRng, StdRng};
[INFO] [stderr]    |                                  ^^^^^^ no `StdRng` in the root
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::num::Wrapping`
[INFO] [stderr]  --> src/wrapper.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::num::Wrapping;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]   --> src/wrapper.rs:47:46
[INFO] [stderr]    |
[INFO] [stderr] 47 |             let mut buf: [u8; 20] = unsafe { mem::uninitialized() };
[INFO] [stderr]    |                                              ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 99 | impl_Display!(i8, u8, i16, u16, i32, u32: to_u32);
[INFO] [stderr]    | -------------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]   --> src/wrapper.rs:47:46
[INFO] [stderr]    |
[INFO] [stderr] 47 |             let mut buf: [u8; 20] = unsafe { mem::uninitialized() };
[INFO] [stderr]    |                                              ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 99 | impl_Display!(i8, u8, i16, u16, i32, u32: to_u32);
[INFO] [stderr]    | -------------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]    --> src/wrapper.rs:47:46
[INFO] [stderr]     |
[INFO] [stderr] 47  |             let mut buf: [u8; 20] = unsafe { mem::uninitialized() };
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 100 | impl_Display!(i64, u64: to_u64);
[INFO] [stderr]     | -------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]    --> src/wrapper.rs:47:46
[INFO] [stderr]     |
[INFO] [stderr] 47  |             let mut buf: [u8; 20] = unsafe { mem::uninitialized() };
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 104 | impl_Display!(isize, usize: to_u64);
[INFO] [stderr]     | ------------------------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `rand::StdRng`
[INFO] [stderr]   --> src/main.rs:11:31
[INFO] [stderr]    |
[INFO] [stderr] 11 |     use rand::{Rng, SeedableRng, StdRng};
[INFO] [stderr]    |                                  ^^^^^^ no `StdRng` in the root
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `rand::StdRng`
[INFO] [stderr]  --> src/bench.rs:6:30
[INFO] [stderr]   |
[INFO] [stderr] 6 | use rand::{Rng, SeedableRng, StdRng};
[INFO] [stderr]   |                              ^^^^^^ no `StdRng` in the root
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `weak_rng` in crate `rand`
[INFO] [stderr]    --> src/wrapper.rs:253:37
[INFO] [stderr]     |
[INFO] [stderr] 253 |                 let mut rnd = rand::weak_rng();
[INFO] [stderr]     |                                     ^^^^^^^^ not found in `rand`
[INFO] [stderr] ...
[INFO] [stderr] 262 |     test_from_str_type!(u8: test_from_str_u8);
[INFO] [stderr]     |     ------------------------------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `weak_rng` in crate `rand`
[INFO] [stderr]    --> src/wrapper.rs:253:37
[INFO] [stderr]     |
[INFO] [stderr] 253 |                 let mut rnd = rand::weak_rng();
[INFO] [stderr]     |                                     ^^^^^^^^ not found in `rand`
[INFO] [stderr] ...
[INFO] [stderr] 263 |     test_from_str_type!(u16: test_from_str_u16);
[INFO] [stderr]     |     -------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `weak_rng` in crate `rand`
[INFO] [stderr]    --> src/wrapper.rs:253:37
[INFO] [stderr]     |
[INFO] [stderr] 253 |                 let mut rnd = rand::weak_rng();
[INFO] [stderr]     |                                     ^^^^^^^^ not found in `rand`
[INFO] [stderr] ...
[INFO] [stderr] 264 |     test_from_str_type!(u32: test_from_str_u32);
[INFO] [stderr]     |     -------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `weak_rng` in crate `rand`
[INFO] [stderr]    --> src/wrapper.rs:253:37
[INFO] [stderr]     |
[INFO] [stderr] 253 |                 let mut rnd = rand::weak_rng();
[INFO] [stderr]     |                                     ^^^^^^^^ not found in `rand`
[INFO] [stderr] ...
[INFO] [stderr] 265 |     test_from_str_type!(u64: test_from_str_u64);
[INFO] [stderr]     |     -------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `weak_rng` in crate `rand`
[INFO] [stderr]    --> src/wrapper.rs:253:37
[INFO] [stderr]     |
[INFO] [stderr] 253 |                 let mut rnd = rand::weak_rng();
[INFO] [stderr]     |                                     ^^^^^^^^ not found in `rand`
[INFO] [stderr] ...
[INFO] [stderr] 266 |     test_from_str_type!(i8: test_from_str_i8);
[INFO] [stderr]     |     ------------------------------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `weak_rng` in crate `rand`
[INFO] [stderr]    --> src/wrapper.rs:253:37
[INFO] [stderr]     |
[INFO] [stderr] 253 |                 let mut rnd = rand::weak_rng();
[INFO] [stderr]     |                                     ^^^^^^^^ not found in `rand`
[INFO] [stderr] ...
[INFO] [stderr] 267 |     test_from_str_type!(i16: test_from_str_i16);
[INFO] [stderr]     |     -------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `weak_rng` in crate `rand`
[INFO] [stderr]    --> src/wrapper.rs:253:37
[INFO] [stderr]     |
[INFO] [stderr] 253 |                 let mut rnd = rand::weak_rng();
[INFO] [stderr]     |                                     ^^^^^^^^ not found in `rand`
[INFO] [stderr] ...
[INFO] [stderr] 268 |     test_from_str_type!(i32: test_from_str_i32);
[INFO] [stderr]     |     -------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `weak_rng` in crate `rand`
[INFO] [stderr]    --> src/wrapper.rs:253:37
[INFO] [stderr]     |
[INFO] [stderr] 253 |                 let mut rnd = rand::weak_rng();
[INFO] [stderr]     |                                     ^^^^^^^^ not found in `rand`
[INFO] [stderr] ...
[INFO] [stderr] 269 |     test_from_str_type!(i64: test_from_str_i64);
[INFO] [stderr]     |     -------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `weak_rng` in crate `rand`
[INFO] [stderr]    --> src/wrapper.rs:306:37
[INFO] [stderr]     |
[INFO] [stderr] 306 |                 let mut rnd = rand::weak_rng();
[INFO] [stderr]     |                                     ^^^^^^^^ not found in `rand`
[INFO] [stderr] ...
[INFO] [stderr] 315 |     test_display_type!(u8: test_display_u8);
[INFO] [stderr]     |     ---------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `weak_rng` in crate `rand`
[INFO] [stderr]    --> src/wrapper.rs:306:37
[INFO] [stderr]     |
[INFO] [stderr] 306 |                 let mut rnd = rand::weak_rng();
[INFO] [stderr]     |                                     ^^^^^^^^ not found in `rand`
[INFO] [stderr] ...
[INFO] [stderr] 316 |     test_display_type!(u16: test_display_u16);
[INFO] [stderr]     |     ------------------------------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `weak_rng` in crate `rand`
[INFO] [stderr]    --> src/wrapper.rs:306:37
[INFO] [stderr]     |
[INFO] [stderr] 306 |                 let mut rnd = rand::weak_rng();
[INFO] [stderr]     |                                     ^^^^^^^^ not found in `rand`
[INFO] [stderr] ...
[INFO] [stderr] 317 |     test_display_type!(u32: test_display_u32);
[INFO] [stderr]     |     ------------------------------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `weak_rng` in crate `rand`
[INFO] [stderr]    --> src/wrapper.rs:306:37
[INFO] [stderr]     |
[INFO] [stderr] 306 |                 let mut rnd = rand::weak_rng();
[INFO] [stderr]     |                                     ^^^^^^^^ not found in `rand`
[INFO] [stderr] ...
[INFO] [stderr] 318 |     test_display_type!(u64: test_display_u64);
[INFO] [stderr]     |     ------------------------------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `weak_rng` in crate `rand`
[INFO] [stderr]    --> src/wrapper.rs:306:37
[INFO] [stderr]     |
[INFO] [stderr] 306 |                 let mut rnd = rand::weak_rng();
[INFO] [stderr]     |                                     ^^^^^^^^ not found in `rand`
[INFO] [stderr] ...
[INFO] [stderr] 319 |     test_display_type!(i8: test_display_i8);
[INFO] [stderr]     |     ---------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `weak_rng` in crate `rand`
[INFO] [stderr]    --> src/wrapper.rs:306:37
[INFO] [stderr]     |
[INFO] [stderr] 306 |                 let mut rnd = rand::weak_rng();
[INFO] [stderr]     |                                     ^^^^^^^^ not found in `rand`
[INFO] [stderr] ...
[INFO] [stderr] 320 |     test_display_type!(i16: test_display_i16);
[INFO] [stderr]     |     ------------------------------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `weak_rng` in crate `rand`
[INFO] [stderr]    --> src/wrapper.rs:306:37
[INFO] [stderr]     |
[INFO] [stderr] 306 |                 let mut rnd = rand::weak_rng();
[INFO] [stderr]     |                                     ^^^^^^^^ not found in `rand`
[INFO] [stderr] ...
[INFO] [stderr] 321 |     test_display_type!(i32: test_display_i32);
[INFO] [stderr]     |     ------------------------------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `weak_rng` in crate `rand`
[INFO] [stderr]    --> src/wrapper.rs:306:37
[INFO] [stderr]     |
[INFO] [stderr] 306 |                 let mut rnd = rand::weak_rng();
[INFO] [stderr]     |                                     ^^^^^^^^ not found in `rand`
[INFO] [stderr] ...
[INFO] [stderr] 322 |     test_display_type!(i64: test_display_i64);
[INFO] [stderr]     |     ------------------------------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::num::Wrapping`
[INFO] [stderr]  --> src/wrapper.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::num::Wrapping;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]    --> src/wrapper.rs:280:18
[INFO] [stderr]     |
[INFO] [stderr] 280 |         for i in (0i64..10000) {
[INFO] [stderr]     |                  ^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]    --> src/wrapper.rs:288:18
[INFO] [stderr]     |
[INFO] [stderr] 288 |         for i in (0i64..10000) {
[INFO] [stderr]     |                  ^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]   --> src/wrapper.rs:47:46
[INFO] [stderr]    |
[INFO] [stderr] 47 |             let mut buf: [u8; 20] = unsafe { mem::uninitialized() };
[INFO] [stderr]    |                                              ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 99 | impl_Display!(i8, u8, i16, u16, i32, u32: to_u32);
[INFO] [stderr]    | -------------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]   --> src/wrapper.rs:47:46
[INFO] [stderr]    |
[INFO] [stderr] 47 |             let mut buf: [u8; 20] = unsafe { mem::uninitialized() };
[INFO] [stderr]    |                                              ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 99 | impl_Display!(i8, u8, i16, u16, i32, u32: to_u32);
[INFO] [stderr]    | -------------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]    --> src/wrapper.rs:47:46
[INFO] [stderr]     |
[INFO] [stderr] 47  |             let mut buf: [u8; 20] = unsafe { mem::uninitialized() };
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 100 | impl_Display!(i64, u64: to_u64);
[INFO] [stderr]     | -------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]    --> src/wrapper.rs:47:46
[INFO] [stderr]     |
[INFO] [stderr] 47  |             let mut buf: [u8; 20] = unsafe { mem::uninitialized() };
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 104 | impl_Display!(isize, usize: to_u64);
[INFO] [stderr]     | ------------------------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Rng`
[INFO] [stderr]   --> src/main.rs:11:13
[INFO] [stderr]    |
[INFO] [stderr] 11 |     use rand::{Rng, SeedableRng, StdRng};
[INFO] [stderr]    |                ^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0432, E0557.
[INFO] [stderr] For more information about an error, try `rustc --explain E0432`.
[INFO] [stderr] error: could not compile `int`.
[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] [stderr] warning: unused import: `Rng`
[INFO] [stderr]    --> src/wrapper.rs:221:22
[INFO] [stderr]     |
[INFO] [stderr] 221 |     use rand::{self, Rng};
[INFO] [stderr]     |                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Rng`
[INFO] [stderr]    --> src/wrapper.rs:276:22
[INFO] [stderr]     |
[INFO] [stderr] 276 |     use rand::{self, Rng};
[INFO] [stderr]     |                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Rng`
[INFO] [stderr]   --> src/main.rs:11:13
[INFO] [stderr]    |
[INFO] [stderr] 11 |     use rand::{Rng, SeedableRng, StdRng};
[INFO] [stderr]    |                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fmt::Write`
[INFO] [stderr]  --> src/bench.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::fmt::Write as fmtWrite;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Rng`
[INFO] [stderr]  --> src/bench.rs:6:12
[INFO] [stderr]   |
[INFO] [stderr] 6 | use rand::{Rng, SeedableRng, StdRng};
[INFO] [stderr]   |            ^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 19 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0425, E0432, E0557.
[INFO] [stderr] For more information about an error, try `rustc --explain E0425`.
[INFO] [stderr] error: could not compile `int`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "1a20234dc4d620d9a247b353703311a311638f4e758b18b75132dfc0696e60b3"`
[INFO] running `"docker" "rm" "-f" "1a20234dc4d620d9a247b353703311a311638f4e758b18b75132dfc0696e60b3"`
[INFO] [stdout] 1a20234dc4d620d9a247b353703311a311638f4e758b18b75132dfc0696e60b3
