[INFO] cloning repository PavelZaytsev/sstable
[INFO] running `"git" "clone" "--bare" "git://github.com/PavelZaytsev/sstable.git" "work/cache/sources/gh/PavelZaytsev/sstable"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/PavelZaytsev/sstable'...
[INFO] running `"git" "clone" "work/cache/sources/gh/PavelZaytsev/sstable" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/PavelZaytsev/sstable"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/PavelZaytsev/sstable'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/PavelZaytsev/sstable" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/PavelZaytsev/sstable"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/PavelZaytsev/sstable'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 049845a34136ee9d30c25a452836ab77accf3157
[INFO] sha for GitHub repo PavelZaytsev/sstable: 049845a34136ee9d30c25a452836ab77accf3157
[INFO] validating manifest of PavelZaytsev/sstable on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of PavelZaytsev/sstable on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing PavelZaytsev/sstable
[INFO] finished frobbing PavelZaytsev/sstable
[INFO] frobbed toml for PavelZaytsev/sstable written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/PavelZaytsev/sstable/Cargo.toml
[INFO] started frobbing PavelZaytsev/sstable
[INFO] finished frobbing PavelZaytsev/sstable
[INFO] frobbed toml for PavelZaytsev/sstable written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/PavelZaytsev/sstable/Cargo.toml
[INFO] crate PavelZaytsev/sstable already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking PavelZaytsev/sstable against try#8f81d0bf6baf07b92f1246696722485c4ca0b049 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-6/try#8f81d0bf6baf07b92f1246696722485c4ca0b049:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/PavelZaytsev/sstable:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 040afa3fa303179eba2e05ca2608b31f14d99362aff421b0bace79cf6749d240
[INFO] running `"docker" "start" "-a" "040afa3fa303179eba2e05ca2608b31f14d99362aff421b0bace79cf6749d240"`
[INFO] [stderr]    Compiling num-traits v0.2.7
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking rand_chacha v0.2.0
[INFO] [stderr]     Checking serde v1.0.91
[INFO] [stderr]     Checking rand v0.7.0
[INFO] [stderr]     Checking tempfile v3.0.8
[INFO] [stderr]     Checking rusty-fork v0.2.2
[INFO] [stderr]     Checking proptest v0.9.4
[INFO] [stderr]     Checking bincode v1.1.3
[INFO] [stderr]     Checking sstable v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]  --> <::proptest::sugar::prop_compose macros>:9:58
[INFO] [stderr]   |
[INFO] [stderr] 4 | $ ( $ var : pat in $ strategy : expr ) , + $ ( , ) ? ) -> $ return_type : ty $
[INFO] [stderr]   |                                          - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 9 | let strat = $ crate :: proptest_helper ! ( @ _WRAP ( $ ( $ strategy ) * ) ) ;
[INFO] [stderr]   |                                                          ^^^^^^^^^^   - conflicting repetition
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[deny(meta_variable_misuse)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]   --> <::proptest::sugar::prop_compose macros>:11:64
[INFO] [stderr]    |
[INFO] [stderr] 4  | $ ( $ var : pat in $ strategy : expr ) , + $ ( , ) ? ) -> $ return_type : ty $
[INFO] [stderr]    |                                          - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 11 | strat , move | $ crate :: proptest_helper ! ( @ _WRAPPAT ( $ ( $ var ) , * ) )
[INFO] [stderr]    |                                                                ^^^^^     - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]   --> <::proptest::sugar::prop_compose macros>:21:58
[INFO] [stderr]    |
[INFO] [stderr] 15 | $ ( $ var : pat in $ strategy : expr ) , + $ ( , ) ? ) (
[INFO] [stderr]    |                                          - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 21 | let strat = $ crate :: proptest_helper ! ( @ _WRAP ( $ ( $ strategy ) * ) ) ;
[INFO] [stderr]    |                                                          ^^^^^^^^^^   - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]   --> <::proptest::sugar::prop_compose macros>:23:64
[INFO] [stderr]    |
[INFO] [stderr] 15 | $ ( $ var : pat in $ strategy : expr ) , + $ ( , ) ? ) (
[INFO] [stderr]    |                                          - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 23 | strat , move | $ crate :: proptest_helper ! ( @ _WRAPPAT ( $ ( $ var ) , * ) )
[INFO] [stderr]    |                                                                ^^^^^     - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]   --> <::proptest::sugar::prop_compose macros>:24:48
[INFO] [stderr]    |
[INFO] [stderr] 16 | $ ( $ var2 : pat in $ strategy2 : expr ) , + $ ( , ) ? ) -> $ return_type : ty
[INFO] [stderr]    |                                            - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 24 | | $ crate :: proptest_helper ! ( @ _WRAP ( $ ( $ strategy2 ) * ) ) ) ; $ crate
[INFO] [stderr]    |                                                ^^^^^^^^^^^   - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]   --> <::proptest::sugar::prop_compose macros>:26:64
[INFO] [stderr]    |
[INFO] [stderr] 16 | $ ( $ var2 : pat in $ strategy2 : expr ) , + $ ( , ) ? ) -> $ return_type : ty
[INFO] [stderr]    |                                            - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 26 | strat , move | $ crate :: proptest_helper ! ( @ _WRAPPAT ( $ ( $ var2 ) , * )
[INFO] [stderr]    |                                                                ^^^^^^     - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: unknown macro variable `strategy`
[INFO] [stderr]   --> <::proptest::sugar::prop_compose macros>:44:58
[INFO] [stderr]    |
[INFO] [stderr] 44 | let strat = $ crate :: proptest_helper ! ( @ _WRAP ( $ ( $ strategy ) * ) ) ;
[INFO] [stderr]    |                                                          ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]   --> <::proptest::sugar::prop_compose macros>:47:54
[INFO] [stderr]    |
[INFO] [stderr] 40 | $ ( $ arg2 : tt ) + $ ( , ) ? ) -> $ return_type : ty $ body : block ) => {
[INFO] [stderr]    |                   - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 47 | | $ crate :: proptest_helper ! ( @ _EXT _STRAT ( $ ( $ arg2 ) * ) ) ) ; $
[INFO] [stderr]    |                                                      ^^^^^^   - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]   --> <::proptest::sugar::prop_compose macros>:49:65
[INFO] [stderr]    |
[INFO] [stderr] 40 | $ ( $ arg2 : tt ) + $ ( , ) ? ) -> $ return_type : ty $ body : block ) => {
[INFO] [stderr]    |                   - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 49 | strat , move | $ crate :: proptest_helper ! ( @ _EXT _PAT ( $ ( $ arg2 ) * ) )
[INFO] [stderr]    |                                                                 ^^^^^^   - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]    --> <::proptest::sugar::proptest_helper macros>:111:38
[INFO] [stderr]     |
[INFO] [stderr] 106 | @ _BODY $ config : ident ( $ ( $ parm : pat in $ strategy : expr ) , + ) [
[INFO] [stderr]     |                                                                      - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 111 | proptest_helper ! ( @ _WRAPSTR ( $ ( $ parm ) , * ) ) ; match runner . run (
[INFO] [stderr]     |                                      ^^^^^^     - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]    --> <::proptest::sugar::proptest_helper macros>:113:46
[INFO] [stderr]     |
[INFO] [stderr] 106 | @ _BODY $ config : ident ( $ ( $ parm : pat in $ strategy : expr ) , + ) [
[INFO] [stderr]     |                                                                      - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 113 | $ crate :: proptest_helper ! ( @ _WRAP ( $ ( $ strategy ) * ) ) , | values | $
[INFO] [stderr]     |                                              ^^^^^^^^^^   - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]    --> <::proptest::sugar::proptest_helper macros>:116:53
[INFO] [stderr]     |
[INFO] [stderr] 106 | @ _BODY $ config : ident ( $ ( $ parm : pat in $ strategy : expr ) , + ) [
[INFO] [stderr]     |                                                                      - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 116 | _ , $ crate :: proptest_helper ! ( @ _WRAPPAT ( $ ( $ parm ) , * ) ) ) | {
[INFO] [stderr]     |                                                     ^^^^^^     - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]    --> <::proptest::sugar::proptest_helper macros>:124:39
[INFO] [stderr]     |
[INFO] [stderr] 119 | @ _BODY2 $ config : ident ( $ ( $ arg : tt ) + ) [ $ ( $ mod : tt ) * ] $ body
[INFO] [stderr]     |                                              - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 124 | proptest_helper ! ( @ _EXT _STR ( $ ( $ arg ) * ) ) ; match runner . run (
[INFO] [stderr]     |                                       ^^^^^   - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]    --> <::proptest::sugar::proptest_helper macros>:126:52
[INFO] [stderr]     |
[INFO] [stderr] 119 | @ _BODY2 $ config : ident ( $ ( $ arg : tt ) + ) [ $ ( $ mod : tt ) * ] $ body
[INFO] [stderr]     |                                              - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 126 | $ crate :: proptest_helper ! ( @ _EXT _STRAT ( $ ( $ arg ) * ) ) , | values |
[INFO] [stderr]     |                                                    ^^^^^   - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]    --> <::proptest::sugar::proptest_helper macros>:129:54
[INFO] [stderr]     |
[INFO] [stderr] 119 | @ _BODY2 $ config : ident ( $ ( $ arg : tt ) + ) [ $ ( $ mod : tt ) * ] $ body
[INFO] [stderr]     |                                              - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 129 | _ , $ crate :: proptest_helper ! ( @ _EXT _PAT ( $ ( $ arg ) * ) ) ) | {
[INFO] [stderr]     |                                                      ^^^^^   - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs::File`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::fs::File;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/sstable.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io`
[INFO] [stderr]  --> src/sstable.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::io;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error`
[INFO] [stderr]  --> src/sstable.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::error;
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::hash::Hash`
[INFO] [stderr]  --> src/sstable.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::hash::Hash;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cmp::Eq`
[INFO] [stderr]  --> src/sstable.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::cmp::Eq;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs`
[INFO] [stderr]  --> src/sstable.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::fs;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::sstable::errors::IndexError`
[INFO] [stderr]   --> src/sstable.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | use crate::sstable::errors::IndexError;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Deserialize`, `de`
[INFO] [stderr]   --> src/sstable.rs:16:13
[INFO] [stderr]    |
[INFO] [stderr] 16 | use serde::{de, Serialize, Deserialize};
[INFO] [stderr]    |             ^^             ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `deserialize`, `serialize`
[INFO] [stderr]   --> src/sstable.rs:18:15
[INFO] [stderr]    |
[INFO] [stderr] 18 | use bincode::{serialize, deserialize};
[INFO] [stderr]    |               ^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::mem`
[INFO] [stderr]   --> src/sstable.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 | use std::mem;
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::mem::size_of_val`
[INFO] [stderr]   --> src/sstable.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 | use std::mem::size_of_val;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `deserialize`, `serialize`
[INFO] [stderr]  --> src/main.rs:6:15
[INFO] [stderr]   |
[INFO] [stderr] 6 | use bincode::{serialize, deserialize};
[INFO] [stderr]   |               ^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Deserialize`, `Serialize`
[INFO] [stderr]  --> src/main.rs:7:13
[INFO] [stderr]   |
[INFO] [stderr] 7 | use serde::{Serialize, Deserialize};
[INFO] [stderr]   |             ^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::BufWriter`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::io::BufWriter;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rbt::red_black_tree::RBT`
[INFO] [stderr]   --> src/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use rbt::red_black_tree::RBT;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::Deref`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::ops::Deref;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `core::borrow::Borrow`
[INFO] [stderr]  --> src/rbt.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |     use core::borrow::Borrow;
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `size_of`
[INFO] [stderr]   --> src/rbt.rs:10:33
[INFO] [stderr]    |
[INFO] [stderr] 10 |     use std::mem::{size_of_val, size_of};
[INFO] [stderr]    |                                 ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::red_black_tree::RBT`
[INFO] [stderr]    --> src/rbt.rs:431:9
[INFO] [stderr]     |
[INFO] [stderr] 431 |     use super::red_black_tree::RBT;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::rc::Rc`
[INFO] [stderr]    --> src/rbt.rs:433:9
[INFO] [stderr]     |
[INFO] [stderr] 433 |     use std::rc::Rc;
[INFO] [stderr]     |         ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::Range`
[INFO] [stderr]    --> src/rbt.rs:435:9
[INFO] [stderr]     |
[INFO] [stderr] 435 |     use std::ops::Range;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rand::prelude::SliceRandom`
[INFO] [stderr]    --> src/rbt.rs:438:9
[INFO] [stderr]     |
[INFO] [stderr] 438 |     use rand::prelude::SliceRandom;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> src/rbt.rs:464:28
[INFO] [stderr]     |
[INFO] [stderr] 464 |         let mut e: usize = (v.len() - 1);
[INFO] [stderr]     |                            ^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::slice::Iter`
[INFO] [stderr]   --> src/main.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 | use std::slice::Iter;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::rc::Rc`
[INFO] [stderr]   --> src/main.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 | use std::rc::Rc;
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::Range`
[INFO] [stderr]   --> src/main.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 | use std::ops::Range;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `serde::export::fmt::Debug`
[INFO] [stderr]   --> src/main.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 | use serde::export::fmt::Debug;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rbt::tests`
[INFO] [stderr]   --> src/main.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 | use rbt::tests;
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cmp::max`
[INFO] [stderr]   --> src/main.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 | use std::cmp::max;
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `balanced`, `next_smallest`
[INFO] [stderr]   --> src/main.rs:23:25
[INFO] [stderr]    |
[INFO] [stderr] 23 | use crate::rbt::tests::{balanced, next_smallest};
[INFO] [stderr]    |                         ^^^^^^^^  ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]  --> <::proptest::sugar::prop_compose macros>:9:58
[INFO] [stderr]   |
[INFO] [stderr] 4 | $ ( $ var : pat in $ strategy : expr ) , + $ ( , ) ? ) -> $ return_type : ty $
[INFO] [stderr]   |                                          - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 9 | let strat = $ crate :: proptest_helper ! ( @ _WRAP ( $ ( $ strategy ) * ) ) ;
[INFO] [stderr]   |                                                          ^^^^^^^^^^   - conflicting repetition
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[deny(meta_variable_misuse)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]   --> <::proptest::sugar::prop_compose macros>:11:64
[INFO] [stderr]    |
[INFO] [stderr] 4  | $ ( $ var : pat in $ strategy : expr ) , + $ ( , ) ? ) -> $ return_type : ty $
[INFO] [stderr]    |                                          - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 11 | strat , move | $ crate :: proptest_helper ! ( @ _WRAPPAT ( $ ( $ var ) , * ) )
[INFO] [stderr]    |                                                                ^^^^^     - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]   --> <::proptest::sugar::prop_compose macros>:21:58
[INFO] [stderr]    |
[INFO] [stderr] 15 | $ ( $ var : pat in $ strategy : expr ) , + $ ( , ) ? ) (
[INFO] [stderr]    |                                          - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 21 | let strat = $ crate :: proptest_helper ! ( @ _WRAP ( $ ( $ strategy ) * ) ) ;
[INFO] [stderr]    |                                                          ^^^^^^^^^^   - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]   --> <::proptest::sugar::prop_compose macros>:23:64
[INFO] [stderr]    |
[INFO] [stderr] 15 | $ ( $ var : pat in $ strategy : expr ) , + $ ( , ) ? ) (
[INFO] [stderr]    |                                          - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 23 | strat , move | $ crate :: proptest_helper ! ( @ _WRAPPAT ( $ ( $ var ) , * ) )
[INFO] [stderr]    |                                                                ^^^^^     - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]   --> <::proptest::sugar::prop_compose macros>:24:48
[INFO] [stderr]    |
[INFO] [stderr] 16 | $ ( $ var2 : pat in $ strategy2 : expr ) , + $ ( , ) ? ) -> $ return_type : ty
[INFO] [stderr]    |                                            - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 24 | | $ crate :: proptest_helper ! ( @ _WRAP ( $ ( $ strategy2 ) * ) ) ) ; $ crate
[INFO] [stderr]    |                                                ^^^^^^^^^^^   - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]   --> <::proptest::sugar::prop_compose macros>:26:64
[INFO] [stderr]    |
[INFO] [stderr] 16 | $ ( $ var2 : pat in $ strategy2 : expr ) , + $ ( , ) ? ) -> $ return_type : ty
[INFO] [stderr]    |                                            - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 26 | strat , move | $ crate :: proptest_helper ! ( @ _WRAPPAT ( $ ( $ var2 ) , * )
[INFO] [stderr]    |                                                                ^^^^^^     - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: unknown macro variable `strategy`
[INFO] [stderr]   --> <::proptest::sugar::prop_compose macros>:44:58
[INFO] [stderr]    |
[INFO] [stderr] 44 | let strat = $ crate :: proptest_helper ! ( @ _WRAP ( $ ( $ strategy ) * ) ) ;
[INFO] [stderr]    |                                                          ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]   --> <::proptest::sugar::prop_compose macros>:47:54
[INFO] [stderr]    |
[INFO] [stderr] 40 | $ ( $ arg2 : tt ) + $ ( , ) ? ) -> $ return_type : ty $ body : block ) => {
[INFO] [stderr]    |                   - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 47 | | $ crate :: proptest_helper ! ( @ _EXT _STRAT ( $ ( $ arg2 ) * ) ) ) ; $
[INFO] [stderr]    |                                                      ^^^^^^   - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]   --> <::proptest::sugar::prop_compose macros>:49:65
[INFO] [stderr]    |
[INFO] [stderr] 40 | $ ( $ arg2 : tt ) + $ ( , ) ? ) -> $ return_type : ty $ body : block ) => {
[INFO] [stderr]    |                   - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 49 | strat , move | $ crate :: proptest_helper ! ( @ _EXT _PAT ( $ ( $ arg2 ) * ) )
[INFO] [stderr]    |                                                                 ^^^^^^   - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]    --> <::proptest::sugar::proptest_helper macros>:111:38
[INFO] [stderr]     |
[INFO] [stderr] 106 | @ _BODY $ config : ident ( $ ( $ parm : pat in $ strategy : expr ) , + ) [
[INFO] [stderr]     |                                                                      - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 111 | proptest_helper ! ( @ _WRAPSTR ( $ ( $ parm ) , * ) ) ; match runner . run (
[INFO] [stderr]     |                                      ^^^^^^     - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]    --> <::proptest::sugar::proptest_helper macros>:113:46
[INFO] [stderr]     |
[INFO] [stderr] 106 | @ _BODY $ config : ident ( $ ( $ parm : pat in $ strategy : expr ) , + ) [
[INFO] [stderr]     |                                                                      - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 113 | $ crate :: proptest_helper ! ( @ _WRAP ( $ ( $ strategy ) * ) ) , | values | $
[INFO] [stderr]     |                                              ^^^^^^^^^^   - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]    --> <::proptest::sugar::proptest_helper macros>:116:53
[INFO] [stderr]     |
[INFO] [stderr] 106 | @ _BODY $ config : ident ( $ ( $ parm : pat in $ strategy : expr ) , + ) [
[INFO] [stderr]     |                                                                      - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 116 | _ , $ crate :: proptest_helper ! ( @ _WRAPPAT ( $ ( $ parm ) , * ) ) ) | {
[INFO] [stderr]     |                                                     ^^^^^^     - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]    --> <::proptest::sugar::proptest_helper macros>:124:39
[INFO] [stderr]     |
[INFO] [stderr] 119 | @ _BODY2 $ config : ident ( $ ( $ arg : tt ) + ) [ $ ( $ mod : tt ) * ] $ body
[INFO] [stderr]     |                                              - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 124 | proptest_helper ! ( @ _EXT _STR ( $ ( $ arg ) * ) ) ; match runner . run (
[INFO] [stderr]     |                                       ^^^^^   - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]    --> <::proptest::sugar::proptest_helper macros>:126:52
[INFO] [stderr]     |
[INFO] [stderr] 119 | @ _BODY2 $ config : ident ( $ ( $ arg : tt ) + ) [ $ ( $ mod : tt ) * ] $ body
[INFO] [stderr]     |                                              - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 126 | $ crate :: proptest_helper ! ( @ _EXT _STRAT ( $ ( $ arg ) * ) ) , | values |
[INFO] [stderr]     |                                                    ^^^^^   - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]    --> <::proptest::sugar::proptest_helper macros>:129:54
[INFO] [stderr]     |
[INFO] [stderr] 119 | @ _BODY2 $ config : ident ( $ ( $ arg : tt ) + ) [ $ ( $ mod : tt ) * ] $ body
[INFO] [stderr]     |                                              - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 129 | _ , $ crate :: proptest_helper ! ( @ _EXT _PAT ( $ ( $ arg ) * ) ) ) | {
[INFO] [stderr]     |                                                      ^^^^^   - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs::File`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::fs::File;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/sstable.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io`
[INFO] [stderr]  --> src/sstable.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::io;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error`
[INFO] [stderr]  --> src/sstable.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::error;
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::hash::Hash`
[INFO] [stderr]  --> src/sstable.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::hash::Hash;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cmp::Eq`
[INFO] [stderr]  --> src/sstable.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::cmp::Eq;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs`
[INFO] [stderr]  --> src/sstable.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::fs;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::sstable::errors::IndexError`
[INFO] [stderr]   --> src/sstable.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | use crate::sstable::errors::IndexError;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Deserialize`, `de`
[INFO] [stderr]   --> src/sstable.rs:16:13
[INFO] [stderr]    |
[INFO] [stderr] 16 | use serde::{de, Serialize, Deserialize};
[INFO] [stderr]    |             ^^             ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::mem`
[INFO] [stderr]   --> src/sstable.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 | use std::mem;
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::mem::size_of_val`
[INFO] [stderr]   --> src/sstable.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 | use std::mem::size_of_val;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `deserialize`, `serialize`
[INFO] [stderr]  --> src/main.rs:6:15
[INFO] [stderr]   |
[INFO] [stderr] 6 | use bincode::{serialize, deserialize};
[INFO] [stderr]   |               ^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Deserialize`, `Serialize`
[INFO] [stderr]  --> src/main.rs:7:13
[INFO] [stderr]   |
[INFO] [stderr] 7 | use serde::{Serialize, Deserialize};
[INFO] [stderr]   |             ^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::BufWriter`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::io::BufWriter;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rbt::red_black_tree::RBT`
[INFO] [stderr]   --> src/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use rbt::red_black_tree::RBT;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::Deref`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::ops::Deref;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `core::borrow::Borrow`
[INFO] [stderr]  --> src/rbt.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |     use core::borrow::Borrow;
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `size_of`
[INFO] [stderr]   --> src/rbt.rs:10:33
[INFO] [stderr]    |
[INFO] [stderr] 10 |     use std::mem::{size_of_val, size_of};
[INFO] [stderr]    |                                 ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::Range`
[INFO] [stderr]    --> src/rbt.rs:435:9
[INFO] [stderr]     |
[INFO] [stderr] 435 |     use std::ops::Range;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> src/rbt.rs:464:28
[INFO] [stderr]     |
[INFO] [stderr] 464 |         let mut e: usize = (v.len() - 1);
[INFO] [stderr]     |                            ^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::slice::Iter`
[INFO] [stderr]   --> src/main.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 | use std::slice::Iter;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::rc::Rc`
[INFO] [stderr]   --> src/main.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 | use std::rc::Rc;
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::Range`
[INFO] [stderr]   --> src/main.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 | use std::ops::Range;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `serde::export::fmt::Debug`
[INFO] [stderr]   --> src/main.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 | use serde::export::fmt::Debug;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rbt::tests`
[INFO] [stderr]   --> src/main.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 | use rbt::tests;
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cmp::max`
[INFO] [stderr]   --> src/main.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 | use std::cmp::max;
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `balanced`, `next_smallest`
[INFO] [stderr]   --> src/main.rs:23:25
[INFO] [stderr]    |
[INFO] [stderr] 23 | use crate::rbt::tests::{balanced, next_smallest};
[INFO] [stderr]    |                         ^^^^^^^^  ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 15 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `sstable`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: aborting due to 15 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `sstable`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "040afa3fa303179eba2e05ca2608b31f14d99362aff421b0bace79cf6749d240"`
[INFO] running `"docker" "rm" "-f" "040afa3fa303179eba2e05ca2608b31f14d99362aff421b0bace79cf6749d240"`
[INFO] [stdout] 040afa3fa303179eba2e05ca2608b31f14d99362aff421b0bace79cf6749d240