Oct 12 23:00:48.214 INFO checking darkwater/um against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 12 23:00:48.215 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-5/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-5/pr-54977/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/source:ro,Z" "-v" "/mnt/big/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +4021bd0b3c5815b087d6db10ce461e7e4854ade7-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Oct 12 23:00:48.565 INFO blam! 3035d81558bf7e559796727df6120be31d6e6b96656ba7a215c91f514bc302e3
Oct 12 23:00:48.576 INFO running `"docker" "start" "-a" "3035d81558bf7e559796727df6120be31d6e6b96656ba7a215c91f514bc302e3"`
Oct 12 23:00:50.052 INFO kablam! usermod: no changes
Oct 12 23:00:50.252 INFO kablam!     Checking tokio-threadpool v0.1.1
Oct 12 23:00:51.834 INFO kablam!     Checking tokio v0.1.4
Oct 12 23:00:53.597 INFO kablam!     Checking um v0.1.0 (/source)
Oct 12 23:00:55.905 INFO kablam! warning: unused import: `TcpListener`
Oct 12 23:00:55.905 INFO kablam!  --> src/client.rs:7:18
Oct 12 23:00:55.906 INFO kablam!   |
Oct 12 23:00:55.906 INFO kablam! 7 | use tokio::net::{TcpListener, TcpStream};
Oct 12 23:00:55.906 INFO kablam!   |                  ^^^^^^^^^^^
Oct 12 23:00:55.906 INFO kablam!   |
Oct 12 23:00:55.906 INFO kablam!   = note: #[warn(unused_imports)] on by default
Oct 12 23:00:55.906 INFO kablam! 
Oct 12 23:00:55.906 INFO kablam! warning: unused import: `BufMut`
Oct 12 23:00:55.906 INFO kablam!  --> src/commandcodec.rs:1:13
Oct 12 23:00:55.906 INFO kablam!   |
Oct 12 23:00:55.906 INFO kablam! 1 | use bytes::{BufMut, BytesMut};
Oct 12 23:00:55.906 INFO kablam!   |             ^^^^^^
Oct 12 23:00:55.906 INFO kablam! 
Oct 12 23:00:55.909 INFO kablam! warning: unused import: `std::fmt::Write`
Oct 12 23:00:55.909 INFO kablam!  --> src/commandcodec.rs:5:5
Oct 12 23:00:55.909 INFO kablam!   |
Oct 12 23:00:55.909 INFO kablam! 5 | use std::fmt::Write;
Oct 12 23:00:55.909 INFO kablam!   |     ^^^^^^^^^^^^^^^
Oct 12 23:00:55.909 INFO kablam! 
Oct 12 23:00:55.909 INFO kablam! warning: unused import: `tokio::io`
Oct 12 23:00:55.909 INFO kablam!  --> src/server.rs:4:5
Oct 12 23:00:55.909 INFO kablam!   |
Oct 12 23:00:55.909 INFO kablam! 4 | use tokio::io;
Oct 12 23:00:55.909 INFO kablam!   |     ^^^^^^^^^
Oct 12 23:00:55.909 INFO kablam! 
Oct 12 23:00:56.163 INFO kablam! warning: unused import: `TcpListener`
Oct 12 23:00:56.164 INFO kablam!  --> src/client.rs:7:18
Oct 12 23:00:56.164 INFO kablam!   |
Oct 12 23:00:56.165 INFO kablam! 7 | use tokio::net::{TcpListener, TcpStream};
Oct 12 23:00:56.166 INFO kablam!   |                  ^^^^^^^^^^^
Oct 12 23:00:56.166 INFO kablam!   |
Oct 12 23:00:56.167 INFO kablam!   = note: #[warn(unused_imports)] on by default
Oct 12 23:00:56.167 INFO kablam! 
Oct 12 23:00:56.168 INFO kablam! warning: unused import: `BufMut`
Oct 12 23:00:56.168 INFO kablam!  --> src/commandcodec.rs:1:13
Oct 12 23:00:56.169 INFO kablam!   |
Oct 12 23:00:56.169 INFO kablam! 1 | use bytes::{BufMut, BytesMut};
Oct 12 23:00:56.170 INFO kablam!   |             ^^^^^^
Oct 12 23:00:56.170 INFO kablam! 
Oct 12 23:00:56.171 INFO kablam! warning: unused import: `std::fmt::Write`
Oct 12 23:00:56.171 INFO kablam!  --> src/commandcodec.rs:5:5
Oct 12 23:00:56.172 INFO kablam!   |
Oct 12 23:00:56.172 INFO kablam! 5 | use std::fmt::Write;
Oct 12 23:00:56.173 INFO kablam!   |     ^^^^^^^^^^^^^^^
Oct 12 23:00:56.173 INFO kablam! 
Oct 12 23:00:56.174 INFO kablam! warning: unused import: `super::*`
Oct 12 23:00:56.174 INFO kablam!   --> src/node.rs:46:9
Oct 12 23:00:56.174 INFO kablam!    |
Oct 12 23:00:56.174 INFO kablam! 46 |     use super::*;
Oct 12 23:00:56.174 INFO kablam!    |         ^^^^^^^^
Oct 12 23:00:56.174 INFO kablam! 
Oct 12 23:00:56.174 INFO kablam! warning: unused import: `tokio::io`
Oct 12 23:00:56.180 INFO kablam!  --> src/server.rs:4:5
Oct 12 23:00:56.180 INFO kablam!   |
Oct 12 23:00:56.180 INFO kablam! 4 | use tokio::io;
Oct 12 23:00:56.180 INFO kablam!   |     ^^^^^^^^^
Oct 12 23:00:56.180 INFO kablam! 
Oct 12 23:00:56.180 INFO kablam! warning: unused import: `super::*`
Oct 12 23:00:56.180 INFO kablam!   --> src/server.rs:54:9
Oct 12 23:00:56.180 INFO kablam!    |
Oct 12 23:00:56.180 INFO kablam! 54 |     use super::*;
Oct 12 23:00:56.180 INFO kablam!    |         ^^^^^^^^
Oct 12 23:00:56.180 INFO kablam! 
Oct 12 23:00:56.180 INFO kablam! warning: unused import: `::std::io::prelude::*`
Oct 12 23:00:56.180 INFO kablam!   --> src/server.rs:55:9
Oct 12 23:00:56.180 INFO kablam!    |
Oct 12 23:00:56.180 INFO kablam! 55 |     use ::std::io::prelude::*;
Oct 12 23:00:56.180 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^
Oct 12 23:00:56.180 INFO kablam! 
Oct 12 23:00:56.180 INFO kablam! warning: unused import: `::std::net::TcpStream`
Oct 12 23:00:56.180 INFO kablam!   --> src/server.rs:56:9
Oct 12 23:00:56.180 INFO kablam!    |
Oct 12 23:00:56.180 INFO kablam! 56 |     use ::std::net::TcpStream;
Oct 12 23:00:56.180 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^
Oct 12 23:00:56.180 INFO kablam! 
Oct 12 23:00:56.180 INFO kablam! warning: unused import: `super::*`
Oct 12 23:00:56.180 INFO kablam!   --> src/value.rs:83:9
Oct 12 23:00:56.180 INFO kablam!    |
Oct 12 23:00:56.180 INFO kablam! 83 |     use super::*;
Oct 12 23:00:56.181 INFO kablam!    |         ^^^^^^^^
Oct 12 23:00:56.181 INFO kablam! 
Oct 12 23:00:56.384 INFO kablam! warning: method is never used: `is_err`
Oct 12 23:00:56.385 INFO kablam!   --> src/response.rs:14:5
Oct 12 23:00:56.386 INFO kablam!    |
Oct 12 23:00:56.386 INFO kablam! 14 |     pub fn is_err(&self) -> bool {
Oct 12 23:00:56.387 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 23:00:56.387 INFO kablam!    |
Oct 12 23:00:56.388 INFO kablam!    = note: #[warn(dead_code)] on by default
Oct 12 23:00:56.388 INFO kablam! 
Oct 12 23:00:56.389 INFO kablam! warning: the feature `match_default_bindings` has been stable since 1.26.0 and no longer requires an attribute to enable
Oct 12 23:00:56.390 INFO kablam!  --> src/main.rs:1:12
Oct 12 23:00:56.390 INFO kablam!   |
Oct 12 23:00:56.391 INFO kablam! 1 | #![feature(match_default_bindings, nll, option_filter, try_trait)]
Oct 12 23:00:56.391 INFO kablam!   |            ^^^^^^^^^^^^^^^^^^^^^^
Oct 12 23:00:56.392 INFO kablam!   |
Oct 12 23:00:56.392 INFO kablam!   = note: #[warn(stable_features)] on by default
Oct 12 23:00:56.393 INFO kablam! 
Oct 12 23:00:56.394 INFO kablam! warning: the feature `option_filter` has been stable since 1.27.0 and no longer requires an attribute to enable
Oct 12 23:00:56.395 INFO kablam!  --> src/main.rs:1:41
Oct 12 23:00:56.395 INFO kablam!   |
Oct 12 23:00:56.396 INFO kablam! 1 | #![feature(match_default_bindings, nll, option_filter, try_trait)]
Oct 12 23:00:56.396 INFO kablam!   |                                         ^^^^^^^^^^^^^
Oct 12 23:00:56.397 INFO kablam! 
Oct 12 23:00:56.666 INFO kablam! warning: the feature `match_default_bindings` has been stable since 1.26.0 and no longer requires an attribute to enable
Oct 12 23:00:56.667 INFO kablam!  --> src/main.rs:1:12
Oct 12 23:00:56.667 INFO kablam!   |
Oct 12 23:00:56.667 INFO kablam! 1 | #![feature(match_default_bindings, nll, option_filter, try_trait)]
Oct 12 23:00:56.667 INFO kablam!   |            ^^^^^^^^^^^^^^^^^^^^^^
Oct 12 23:00:56.667 INFO kablam!   |
Oct 12 23:00:56.667 INFO kablam!   = note: #[warn(stable_features)] on by default
Oct 12 23:00:56.667 INFO kablam! 
Oct 12 23:00:56.668 INFO kablam! warning: the feature `option_filter` has been stable since 1.27.0 and no longer requires an attribute to enable
Oct 12 23:00:56.668 INFO kablam!  --> src/main.rs:1:41
Oct 12 23:00:56.668 INFO kablam!   |
Oct 12 23:00:56.668 INFO kablam! 1 | #![feature(match_default_bindings, nll, option_filter, try_trait)]
Oct 12 23:00:56.668 INFO kablam!   |                                         ^^^^^^^^^^^^^
Oct 12 23:00:56.668 INFO kablam! 
Oct 12 23:00:56.763 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 6.67s
Oct 12 23:00:56.768 INFO kablam! su: No module specific data is present
Oct 12 23:00:58.073 INFO running `"docker" "rm" "-f" "3035d81558bf7e559796727df6120be31d6e6b96656ba7a215c91f514bc302e3"`
Oct 12 23:00:58.340 INFO blam! 3035d81558bf7e559796727df6120be31d6e6b96656ba7a215c91f514bc302e3