[INFO] updating cached repository dalloriam/kyu
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/dalloriam/kyu
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/dalloriam/kyu" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/dalloriam/kyu"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/dalloriam/kyu'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/dalloriam/kyu" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/dalloriam/kyu"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/dalloriam/kyu'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ae21ef56024c9450c2fed8c10b67163bd1369a55
[INFO] sha for GitHub repo dalloriam/kyu: ae21ef56024c9450c2fed8c10b67163bd1369a55
[INFO] validating manifest of dalloriam/kyu on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of dalloriam/kyu on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing dalloriam/kyu
[INFO] finished frobbing dalloriam/kyu
[INFO] frobbed toml for dalloriam/kyu written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/dalloriam/kyu/Cargo.toml
[INFO] started frobbing dalloriam/kyu
[INFO] finished frobbing dalloriam/kyu
[INFO] frobbed toml for dalloriam/kyu written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/dalloriam/kyu/Cargo.toml
[INFO] crate dalloriam/kyu already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking dalloriam/kyu against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-3/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/dalloriam/kyu:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 4e6835b2d35521711490b7d84cad9648a04ec44a644b50a49f008ee117225dd6
[INFO] running `"docker" "start" "-a" "4e6835b2d35521711490b7d84cad9648a04ec44a644b50a49f008ee117225dd6"`
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking term v0.5.2
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking simplelog v0.5.3
[INFO] [stderr]     Checking kyu v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `info`
[INFO] [stderr]  --> src/client_main.rs:1:11
[INFO] [stderr]   |
[INFO] [stderr] 1 | use log::{info, trace, error};
[INFO] [stderr]   |           ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `reader`
[INFO] [stderr]   --> src/queue/protocol/message.rs:27:38
[INFO] [stderr]    |
[INFO] [stderr] 27 |     pub fn read<S: std::io::BufRead>(reader: S) {
[INFO] [stderr]    |                                      ^^^^^^ help: consider prefixing with an underscore: `_reader`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/client/client.rs:22:16
[INFO] [stderr]    |
[INFO] [stderr] 22 |             Ok(mut stream) => {
[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: variant is never constructed: `HSAck`
[INFO] [stderr]  --> src/queue/protocol/message.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     HSAck = 2,
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `QDeclare`
[INFO] [stderr]  --> src/queue/protocol/message.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     QDeclare = 3,
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Publish`
[INFO] [stderr]   --> src/queue/protocol/message.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     Publish = 4,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `read`
[INFO] [stderr]   --> src/queue/protocol/message.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     pub fn read<S: std::io::BufRead>(reader: S) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `handshake_ack`
[INFO] [stderr]   --> src/queue/protocol/message.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     pub fn handshake_ack() -> Message {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `publish`
[INFO] [stderr]   --> src/queue/protocol/message.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     pub fn publish(body: Vec<u8>) -> Message {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `info`, `trace`, `warn`
[INFO] [stderr]  --> src/server_main.rs:1:11
[INFO] [stderr]   |
[INFO] [stderr] 1 | use log::{info, trace, warn};
[INFO] [stderr]   |           ^^^^  ^^^^^  ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `info`, `trace`, `warn`
[INFO] [stderr]  --> src/server_main.rs:1:11
[INFO] [stderr]   |
[INFO] [stderr] 1 | use log::{info, trace, warn};
[INFO] [stderr]   |           ^^^^  ^^^^^  ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `info`
[INFO] [stderr]  --> src/client_main.rs:1:11
[INFO] [stderr]   |
[INFO] [stderr] 1 | use log::{info, trace, error};
[INFO] [stderr]   |           ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `reader`
[INFO] [stderr]   --> src/queue/protocol/message.rs:27:38
[INFO] [stderr]    |
[INFO] [stderr] 27 |     pub fn read<S: std::io::BufRead>(reader: S) {
[INFO] [stderr]    |                                      ^^^^^^ help: consider prefixing with an underscore: `_reader`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `stream`
[INFO] [stderr]   --> src/server/server.rs:16:33
[INFO] [stderr]    |
[INFO] [stderr] 16 |     fn handle_connection(&self, stream: TcpStream) {
[INFO] [stderr]    |                                 ^^^^^^ help: consider prefixing with an underscore: `_stream`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `HSSyn`
[INFO] [stderr]  --> src/queue/protocol/message.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     HSSyn = 1,
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `HSAck`
[INFO] [stderr]  --> src/queue/protocol/message.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     HSAck = 2,
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `QDeclare`
[INFO] [stderr]  --> src/queue/protocol/message.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     QDeclare = 3,
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Publish`
[INFO] [stderr]   --> src/queue/protocol/message.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     Publish = 4,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Message`
[INFO] [stderr]   --> src/queue/protocol/message.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub struct Message {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/queue/protocol/message.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     fn new(msg_type: MessageType, data: Vec<u8>) -> Message {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `read`
[INFO] [stderr]   --> src/queue/protocol/message.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     pub fn read<S: std::io::BufRead>(reader: S) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `handshake_syn`
[INFO] [stderr]   --> src/queue/protocol/message.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     pub fn handshake_syn() -> Message {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `handshake_ack`
[INFO] [stderr]   --> src/queue/protocol/message.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     pub fn handshake_ack() -> Message {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `publish`
[INFO] [stderr]   --> src/queue/protocol/message.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     pub fn publish(body: Vec<u8>) -> Message {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `bytes`
[INFO] [stderr]   --> src/queue/protocol/message.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |     pub fn bytes(&self) -> Vec<u8> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `reader`
[INFO] [stderr]   --> src/queue/protocol/message.rs:27:38
[INFO] [stderr]    |
[INFO] [stderr] 27 |     pub fn read<S: std::io::BufRead>(reader: S) {
[INFO] [stderr]    |                                      ^^^^^^ help: consider prefixing with an underscore: `_reader`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `stream`
[INFO] [stderr]   --> src/server/server.rs:16:33
[INFO] [stderr]    |
[INFO] [stderr] 16 |     fn handle_connection(&self, stream: TcpStream) {
[INFO] [stderr]    |                                 ^^^^^^ help: consider prefixing with an underscore: `_stream`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `reader`
[INFO] [stderr]   --> src/queue/protocol/message.rs:27:38
[INFO] [stderr]    |
[INFO] [stderr] 27 |     pub fn read<S: std::io::BufRead>(reader: S) {
[INFO] [stderr]    |                                      ^^^^^^ help: consider prefixing with an underscore: `_reader`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `HSSyn`
[INFO] [stderr]  --> src/queue/protocol/message.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     HSSyn = 1,
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `HSAck`
[INFO] [stderr]  --> src/queue/protocol/message.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     HSAck = 2,
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `QDeclare`
[INFO] [stderr]  --> src/queue/protocol/message.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     QDeclare = 3,
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Publish`
[INFO] [stderr]   --> src/queue/protocol/message.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     Publish = 4,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Message`
[INFO] [stderr]   --> src/queue/protocol/message.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub struct Message {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/queue/protocol/message.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     fn new(msg_type: MessageType, data: Vec<u8>) -> Message {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `read`
[INFO] [stderr]   --> src/queue/protocol/message.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     pub fn read<S: std::io::BufRead>(reader: S) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `handshake_syn`
[INFO] [stderr]   --> src/queue/protocol/message.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     pub fn handshake_syn() -> Message {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `handshake_ack`
[INFO] [stderr]   --> src/queue/protocol/message.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     pub fn handshake_ack() -> Message {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `publish`
[INFO] [stderr]   --> src/queue/protocol/message.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     pub fn publish(body: Vec<u8>) -> Message {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `bytes`
[INFO] [stderr]   --> src/queue/protocol/message.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |     pub fn bytes(&self) -> Vec<u8> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/client/client.rs:22:16
[INFO] [stderr]    |
[INFO] [stderr] 22 |             Ok(mut stream) => {
[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: variant is never constructed: `HSAck`
[INFO] [stderr]  --> src/queue/protocol/message.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     HSAck = 2,
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `QDeclare`
[INFO] [stderr]  --> src/queue/protocol/message.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     QDeclare = 3,
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Publish`
[INFO] [stderr]   --> src/queue/protocol/message.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     Publish = 4,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `read`
[INFO] [stderr]   --> src/queue/protocol/message.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     pub fn read<S: std::io::BufRead>(reader: S) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `handshake_ack`
[INFO] [stderr]   --> src/queue/protocol/message.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     pub fn handshake_ack() -> Message {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `publish`
[INFO] [stderr]   --> src/queue/protocol/message.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     pub fn publish(body: Vec<u8>) -> Message {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.08s
[INFO] running `"docker" "inspect" "4e6835b2d35521711490b7d84cad9648a04ec44a644b50a49f008ee117225dd6"`
[INFO] running `"docker" "rm" "-f" "4e6835b2d35521711490b7d84cad9648a04ec44a644b50a49f008ee117225dd6"`
[INFO] [stdout] 4e6835b2d35521711490b7d84cad9648a04ec44a644b50a49f008ee117225dd6