[INFO] updating cached repository localghost/membership [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/localghost/membership [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/localghost/membership" "work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/localghost/membership"` [INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/localghost/membership'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/localghost/membership" "work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/localghost/membership"` [INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/localghost/membership'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 2156bba3665e76a45d3e5190d81d24b0dbad03a8 [INFO] sha for GitHub repo localghost/membership: 2156bba3665e76a45d3e5190d81d24b0dbad03a8 [INFO] validating manifest of localghost/membership on toolchain master#452087b4bf18cece2d52d7cd8c9147195e5404bf [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of localghost/membership on toolchain try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing localghost/membership [INFO] finished frobbing localghost/membership [INFO] frobbed toml for localghost/membership written to work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/localghost/membership/Cargo.toml [INFO] started frobbing localghost/membership [INFO] finished frobbing localghost/membership [INFO] frobbed toml for localghost/membership written to work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/localghost/membership/Cargo.toml [INFO] crate localghost/membership already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking localghost/membership against try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab for pr-63247 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63247/worker-2/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/localghost/membership:/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" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] 81f92fde56c57b3c8a7d0d6b02c5f1d793a4165a8afc2d90e06f86950f14ac70 [INFO] running `"docker" "start" "-a" "81f92fde56c57b3c8a7d0d6b02c5f1d793a4165a8afc2d90e06f86950f14ac70"` [INFO] [stderr] Compiling libc v0.2.54 [INFO] [stderr] Compiling bitflags v1.0.5 [INFO] [stderr] Compiling syn v0.15.33 [INFO] [stderr] Compiling proc-macro2 v0.4.29 [INFO] [stderr] Compiling quote v0.6.12 [INFO] [stderr] Checking iovec v0.1.2 [INFO] [stderr] Checking atty v0.2.11 [INFO] [stderr] Checking net2 v0.2.33 [INFO] [stderr] Checking clap v2.33.0 [INFO] [stderr] Checking env_logger v0.6.1 [INFO] [stderr] Checking bytes v0.4.12 [INFO] [stderr] Checking mio v0.6.16 [INFO] [stderr] Checking mio-extras v2.0.5 [INFO] [stderr] Compiling structopt-derive v0.2.15 [INFO] [stderr] Checking structopt v0.2.15 [INFO] [stderr] Checking membership v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused imports: `BufMut`, `BytesMut` [INFO] [stderr] --> src/lib.rs:7:13 [INFO] [stderr] | [INFO] [stderr] 7 | use bytes::{BufMut, Buf, BytesMut}; [INFO] [stderr] | ^^^^^^ ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::io::Cursor` [INFO] [stderr] --> src/lib.rs:8:5 [INFO] [stderr] | [INFO] [stderr] 8 | use std::io::Cursor; [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused imports: `BTreeMap`, `BinaryHeap`, `HashMap` [INFO] [stderr] --> src/lib.rs:10:24 [INFO] [stderr] | [INFO] [stderr] 10 | use std::collections::{HashMap, HashSet, BTreeMap, BinaryHeap}; [INFO] [stderr] | ^^^^^^^ ^^^^^^^^ ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `error` [INFO] [stderr] --> src/lib.rs:12:24 [INFO] [stderr] | [INFO] [stderr] 12 | use log::{debug, info, error}; [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::default::Default` [INFO] [stderr] --> src/lib.rs:13:5 [INFO] [stderr] | [INFO] [stderr] 13 | use std::default::Default; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `SocketAddrV4` [INFO] [stderr] --> src/message.rs:2:46 [INFO] [stderr] | [INFO] [stderr] 2 | use std::net::{IpAddr, SocketAddr, Ipv4Addr, SocketAddrV4}; [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused imports: `debug`, `error`, `info` [INFO] [stderr] --> src/message.rs:5:11 [INFO] [stderr] | [INFO] [stderr] 5 | use log::{debug, info, error}; [INFO] [stderr] | ^^^^^ ^^^^ ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::cmp::Reverse` [INFO] [stderr] --> src/lib.rs:17:5 [INFO] [stderr] | [INFO] [stderr] 17 | use std::cmp::Reverse; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::convert::TryInto` [INFO] [stderr] --> src/lib.rs:18:5 [INFO] [stderr] | [INFO] [stderr] 18 | use std::convert::TryInto; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused imports: `BufMut`, `BytesMut` [INFO] [stderr] --> src/lib.rs:7:13 [INFO] [stderr] | [INFO] [stderr] 7 | use bytes::{BufMut, Buf, BytesMut}; [INFO] [stderr] | ^^^^^^ ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::io::Cursor` [INFO] [stderr] --> src/lib.rs:8:5 [INFO] [stderr] | [INFO] [stderr] 8 | use std::io::Cursor; [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused imports: `BTreeMap`, `BinaryHeap`, `HashMap` [INFO] [stderr] --> src/lib.rs:10:24 [INFO] [stderr] | [INFO] [stderr] 10 | use std::collections::{HashMap, HashSet, BTreeMap, BinaryHeap}; [INFO] [stderr] | ^^^^^^^ ^^^^^^^^ ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `error` [INFO] [stderr] --> src/lib.rs:12:24 [INFO] [stderr] | [INFO] [stderr] 12 | use log::{debug, info, error}; [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::default::Default` [INFO] [stderr] --> src/lib.rs:13:5 [INFO] [stderr] | [INFO] [stderr] 13 | use std::default::Default; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `SocketAddrV4` [INFO] [stderr] --> src/message.rs:2:46 [INFO] [stderr] | [INFO] [stderr] 2 | use std::net::{IpAddr, SocketAddr, Ipv4Addr, SocketAddrV4}; [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused imports: `debug`, `error`, `info` [INFO] [stderr] --> src/message.rs:5:11 [INFO] [stderr] | [INFO] [stderr] 5 | use log::{debug, info, error}; [INFO] [stderr] | ^^^^^ ^^^^ ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::cmp::Reverse` [INFO] [stderr] --> src/lib.rs:17:5 [INFO] [stderr] | [INFO] [stderr] 17 | use std::cmp::Reverse; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::convert::TryInto` [INFO] [stderr] --> src/lib.rs:18:5 [INFO] [stderr] | [INFO] [stderr] 18 | use std::convert::TryInto; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `Buf` [INFO] [stderr] --> src/lib.rs:7:21 [INFO] [stderr] | [INFO] [stderr] 7 | use bytes::{BufMut, Buf, BytesMut}; [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `new_epoch` [INFO] [stderr] --> src/lib.rs:157:17 [INFO] [stderr] | [INFO] [stderr] 157 | let mut new_epoch = false; [INFO] [stderr] | ^^^^^^^^^ help: consider prefixing with an underscore: `_new_epoch` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `idx` [INFO] [stderr] --> src/message.rs:86:13 [INFO] [stderr] | [INFO] [stderr] 86 | for idx in 0..count { [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_idx` [INFO] [stderr] [INFO] [stderr] warning: unused import: `Buf` [INFO] [stderr] --> src/lib.rs:7:21 [INFO] [stderr] | [INFO] [stderr] 7 | use bytes::{BufMut, Buf, BytesMut}; [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `new_epoch` [INFO] [stderr] --> src/lib.rs:157:17 [INFO] [stderr] | [INFO] [stderr] 157 | let mut new_epoch = false; [INFO] [stderr] | ^^^^^^^^^ help: consider prefixing with an underscore: `_new_epoch` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `idx` [INFO] [stderr] --> src/message.rs:86:13 [INFO] [stderr] | [INFO] [stderr] 86 | for idx in 0..count { [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_idx` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:157:13 [INFO] [stderr] | [INFO] [stderr] 157 | let mut new_epoch = false; [INFO] [stderr] | ----^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:254:37 [INFO] [stderr] | [INFO] [stderr] 254 | let mut message = Message::create(MessageType::Ping, header.sequence_number, header.epoch); [INFO] [stderr] | ----^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Ack2` [INFO] [stderr] --> src/lib.rs:87:1 [INFO] [stderr] | [INFO] [stderr] 87 | struct Ack2 { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused bitwise operation that must be used [INFO] [stderr] --> src/message.rs:93:13 [INFO] [stderr] | [INFO] [stderr] 93 | header >> 1; [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:157:13 [INFO] [stderr] | [INFO] [stderr] 157 | let mut new_epoch = false; [INFO] [stderr] | ----^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:254:37 [INFO] [stderr] | [INFO] [stderr] 254 | let mut message = Message::create(MessageType::Ping, header.sequence_number, header.epoch); [INFO] [stderr] | ----^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Ack2` [INFO] [stderr] --> src/lib.rs:87:1 [INFO] [stderr] | [INFO] [stderr] 87 | struct Ack2 { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused bitwise operation that must be used [INFO] [stderr] --> src/message.rs:93:13 [INFO] [stderr] | [INFO] [stderr] 93 | header >> 1; [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 30.11s [INFO] running `"docker" "inspect" "81f92fde56c57b3c8a7d0d6b02c5f1d793a4165a8afc2d90e06f86950f14ac70"` [INFO] running `"docker" "rm" "-f" "81f92fde56c57b3c8a7d0d6b02c5f1d793a4165a8afc2d90e06f86950f14ac70"` [INFO] [stdout] 81f92fde56c57b3c8a7d0d6b02c5f1d793a4165a8afc2d90e06f86950f14ac70