[INFO] updating cached repository https://github.com/slyphon/cdb_rs
[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] 5c6a484b2596d07875090597de781d72f203187f
[INFO] testing slyphon/cdb_rs against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fslyphon%2Fcdb_rs" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/slyphon/cdb_rs on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/slyphon/cdb_rs
[INFO] finished tweaking git repo https://github.com/slyphon/cdb_rs
[INFO] tweaked toml for git repo https://github.com/slyphon/cdb_rs written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/slyphon/cdb_rs already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b906a0adf236dcb99ce775751ea43bf55d038068fc4b982e304a578020f00ca8
[INFO] running `"docker" "start" "-a" "b906a0adf236dcb99ce775751ea43bf55d038068fc4b982e304a578020f00ca8"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling rand v0.5.1
[INFO] [stderr]    Compiling cdb_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `rand`
[INFO] [stderr]  --> src/cdb/randoread.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use rand;
[INFO] [stderr]   |     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error`
[INFO] [stderr]  --> src/cdb/input.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::error;
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io`
[INFO] [stderr]  --> src/cdb/input.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::io;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `BufWriter`
[INFO] [stderr]  --> src/cdb/input.rs:6:25
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::io::{BufReader,BufWriter};
[INFO] [stderr]   |                         ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::num::ParseIntError`
[INFO] [stderr]  --> src/cdb/input.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::num::ParseIntError;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::str::Utf8Error`
[INFO] [stderr]   --> src/cdb/input.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::str::Utf8Error;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fmt`
[INFO] [stderr]   --> src/cdb/input.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::fmt;
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/cdb/input.rs:123:45
[INFO] [stderr]     |
[INFO] [stderr] 123 | pub fn parse<'a>(file: &'a mut File) -> Box<Iterator<Item=Result<KV, WriterError>> + 'a> {
[INFO] [stderr]     |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=Result<KV, WriterError>> + 'a`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/cdb/errors.rs:41:32
[INFO] [stderr]    |
[INFO] [stderr] 41 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Rng`, `thread_rng`
[INFO] [stderr]   --> src/cdb/mod.rs:10:12
[INFO] [stderr]    |
[INFO] [stderr] 10 | use rand::{thread_rng, Rng};
[INFO] [stderr]    |            ^^^^^^^^^^  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around method argument
[INFO] [stderr]    --> src/cdb/mod.rs:179:43
[INFO] [stderr]     |
[INFO] [stderr] 179 |         let offsets: Vec<usize> = rng.map({|j| t_rec.ptr + (j * END_TABLE_ENTRY_SIZE) }).collect();
[INFO] [stderr]     |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_braces)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/cdb/mod.rs:204:38
[INFO] [stderr]     |
[INFO] [stderr] 204 |     fn kvs_iter<'a>(&'a self) -> Box<Iterator<Item=KV> + 'a> {
[INFO] [stderr]     |                                      ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=KV> + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/cdb/errors.rs:35:50
[INFO] [stderr]    |
[INFO] [stderr] 35 |             WriterError::IOError(ref err) => err.description(),
[INFO] [stderr]    |                                                  ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/cdb/errors.rs:36:52
[INFO] [stderr]    |
[INFO] [stderr] 36 |             WriterError::UTF8Error(ref err) => err.description(),
[INFO] [stderr]    |                                                    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/cdb/errors.rs:37:53
[INFO] [stderr]    |
[INFO] [stderr] 37 |             WriterError::ParseError(ref err) => err.description(),
[INFO] [stderr]    |                                                     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `BufReaders`
[INFO] [stderr]   --> src/cdb/input.rs:16:6
[INFO] [stderr]    |
[INFO] [stderr] 16 | enum BufReaders {
[INFO] [stderr]    |      ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `DASH`
[INFO] [stderr]   --> src/cdb/input.rs:26:1
[INFO] [stderr]    |
[INFO] [stderr] 26 | const DASH: u8  = 0x2a; // ASCII '-'
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `GT`
[INFO] [stderr]   --> src/cdb/input.rs:27:1
[INFO] [stderr]    |
[INFO] [stderr] 27 | const GT: u8    = 0x3e; // ASCII '>'
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `kvs`
[INFO] [stderr]    --> src/cdb/mod.rs:198:5
[INFO] [stderr]     |
[INFO] [stderr] 198 |     fn kvs(&self) -> Vec<KV> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 19 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dump`
[INFO] [stderr]  --> src/main.rs:9:4
[INFO] [stderr]   |
[INFO] [stderr] 9 | fn dump(filename: &str) -> io::Result<()> {
[INFO] [stderr]   |    ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.76s
[INFO] running `"docker" "inspect" "b906a0adf236dcb99ce775751ea43bf55d038068fc4b982e304a578020f00ca8"`
[INFO] running `"docker" "rm" "-f" "b906a0adf236dcb99ce775751ea43bf55d038068fc4b982e304a578020f00ca8"`
[INFO] [stdout] b906a0adf236dcb99ce775751ea43bf55d038068fc4b982e304a578020f00ca8
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b9131fd996b850667400ce8fcfa18d290cd0a0a561d7db211a54c1b0dcf4a184
[INFO] running `"docker" "start" "-a" "b9131fd996b850667400ce8fcfa18d290cd0a0a561d7db211a54c1b0dcf4a184"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling cdb_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `rand`
[INFO] [stderr]  --> src/cdb/randoread.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use rand;
[INFO] [stderr]   |     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error`
[INFO] [stderr]  --> src/cdb/input.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::error;
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io`
[INFO] [stderr]  --> src/cdb/input.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::io;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `BufWriter`
[INFO] [stderr]  --> src/cdb/input.rs:6:25
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::io::{BufReader,BufWriter};
[INFO] [stderr]   |                         ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::num::ParseIntError`
[INFO] [stderr]  --> src/cdb/input.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::num::ParseIntError;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::str::Utf8Error`
[INFO] [stderr]   --> src/cdb/input.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::str::Utf8Error;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fmt`
[INFO] [stderr]   --> src/cdb/input.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::fmt;
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/cdb/input.rs:123:45
[INFO] [stderr]     |
[INFO] [stderr] 123 | pub fn parse<'a>(file: &'a mut File) -> Box<Iterator<Item=Result<KV, WriterError>> + 'a> {
[INFO] [stderr]     |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=Result<KV, WriterError>> + 'a`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/cdb/errors.rs:41:32
[INFO] [stderr]    |
[INFO] [stderr] 41 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Rng`, `thread_rng`
[INFO] [stderr]   --> src/cdb/mod.rs:10:12
[INFO] [stderr]    |
[INFO] [stderr] 10 | use rand::{thread_rng, Rng};
[INFO] [stderr]    |            ^^^^^^^^^^  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around method argument
[INFO] [stderr]    --> src/cdb/mod.rs:179:43
[INFO] [stderr]     |
[INFO] [stderr] 179 |         let offsets: Vec<usize> = rng.map({|j| t_rec.ptr + (j * END_TABLE_ENTRY_SIZE) }).collect();
[INFO] [stderr]     |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_braces)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/cdb/mod.rs:204:38
[INFO] [stderr]     |
[INFO] [stderr] 204 |     fn kvs_iter<'a>(&'a self) -> Box<Iterator<Item=KV> + 'a> {
[INFO] [stderr]     |                                      ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=KV> + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/cdb/errors.rs:35:50
[INFO] [stderr]    |
[INFO] [stderr] 35 |             WriterError::IOError(ref err) => err.description(),
[INFO] [stderr]    |                                                  ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/cdb/errors.rs:36:52
[INFO] [stderr]    |
[INFO] [stderr] 36 |             WriterError::UTF8Error(ref err) => err.description(),
[INFO] [stderr]    |                                                    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/cdb/errors.rs:37:53
[INFO] [stderr]    |
[INFO] [stderr] 37 |             WriterError::ParseError(ref err) => err.description(),
[INFO] [stderr]    |                                                     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `BufReaders`
[INFO] [stderr]   --> src/cdb/input.rs:16:6
[INFO] [stderr]    |
[INFO] [stderr] 16 | enum BufReaders {
[INFO] [stderr]    |      ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `DASH`
[INFO] [stderr]   --> src/cdb/input.rs:26:1
[INFO] [stderr]    |
[INFO] [stderr] 26 | const DASH: u8  = 0x2a; // ASCII '-'
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `GT`
[INFO] [stderr]   --> src/cdb/input.rs:27:1
[INFO] [stderr]    |
[INFO] [stderr] 27 | const GT: u8    = 0x3e; // ASCII '>'
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `kvs`
[INFO] [stderr]    --> src/cdb/mod.rs:198:5
[INFO] [stderr]     |
[INFO] [stderr] 198 |     fn kvs(&self) -> Vec<KV> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 19 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dump`
[INFO] [stderr]  --> src/main.rs:9:4
[INFO] [stderr]   |
[INFO] [stderr] 9 | fn dump(filename: &str) -> io::Result<()> {
[INFO] [stderr]   |    ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rand`
[INFO] [stderr]  --> src/cdb/randoread.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use rand;
[INFO] [stderr]   |     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error`
[INFO] [stderr]  --> src/cdb/input.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::error;
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io`
[INFO] [stderr]  --> src/cdb/input.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::io;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `BufWriter`
[INFO] [stderr]  --> src/cdb/input.rs:6:25
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::io::{BufReader,BufWriter};
[INFO] [stderr]   |                         ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::num::ParseIntError`
[INFO] [stderr]  --> src/cdb/input.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::num::ParseIntError;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::str::Utf8Error`
[INFO] [stderr]   --> src/cdb/input.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::str::Utf8Error;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fmt`
[INFO] [stderr]   --> src/cdb/input.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::fmt;
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/cdb/input.rs:123:45
[INFO] [stderr]     |
[INFO] [stderr] 123 | pub fn parse<'a>(file: &'a mut File) -> Box<Iterator<Item=Result<KV, WriterError>> + 'a> {
[INFO] [stderr]     |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=Result<KV, WriterError>> + 'a`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/cdb/errors.rs:41:32
[INFO] [stderr]    |
[INFO] [stderr] 41 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Rng`, `thread_rng`
[INFO] [stderr]   --> src/cdb/mod.rs:10:12
[INFO] [stderr]    |
[INFO] [stderr] 10 | use rand::{thread_rng, Rng};
[INFO] [stderr]    |            ^^^^^^^^^^  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around method argument
[INFO] [stderr]    --> src/cdb/mod.rs:179:43
[INFO] [stderr]     |
[INFO] [stderr] 179 |         let offsets: Vec<usize> = rng.map({|j| t_rec.ptr + (j * END_TABLE_ENTRY_SIZE) }).collect();
[INFO] [stderr]     |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_braces)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/cdb/mod.rs:204:38
[INFO] [stderr]     |
[INFO] [stderr] 204 |     fn kvs_iter<'a>(&'a self) -> Box<Iterator<Item=KV> + 'a> {
[INFO] [stderr]     |                                      ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=KV> + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/cdb/input.rs:144:56
[INFO] [stderr]     |
[INFO] [stderr] 144 |         let recs: Vec<Result<KV, WriterError>> = parse(&mut br).collect();
[INFO] [stderr]     |                                                        ^^^^^^^ expected struct `std::fs::File`, found struct `std::io::BufReader`
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected mutable reference `&mut std::fs::File`
[INFO] [stderr]                found mutable reference `&mut std::io::BufReader<bytes::Reader<std::io::Cursor<bytes::Bytes>>>`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/cdb/errors.rs:35:50
[INFO] [stderr]    |
[INFO] [stderr] 35 |             WriterError::IOError(ref err) => err.description(),
[INFO] [stderr]    |                                                  ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/cdb/errors.rs:36:52
[INFO] [stderr]    |
[INFO] [stderr] 36 |             WriterError::UTF8Error(ref err) => err.description(),
[INFO] [stderr]    |                                                    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/cdb/errors.rs:37:53
[INFO] [stderr]    |
[INFO] [stderr] 37 |             WriterError::ParseError(ref err) => err.description(),
[INFO] [stderr]    |                                                     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error; 15 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0308`.
[INFO] [stderr] error: could not compile `cdb_rs`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "b9131fd996b850667400ce8fcfa18d290cd0a0a561d7db211a54c1b0dcf4a184"`
[INFO] running `"docker" "rm" "-f" "b9131fd996b850667400ce8fcfa18d290cd0a0a561d7db211a54c1b0dcf4a184"`
[INFO] [stdout] b9131fd996b850667400ce8fcfa18d290cd0a0a561d7db211a54c1b0dcf4a184