[INFO] cloning repository https://github.com/zklapow/duplex
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zklapow/duplex" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzklapow%2Fduplex", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzklapow%2Fduplex'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6590429dc4552c62fdba46c2ca0a811f835e4b92
[INFO] testing zklapow/duplex against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzklapow%2Fduplex" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zklapow/duplex on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/zklapow/duplex
[INFO] finished tweaking git repo https://github.com/zklapow/duplex
[INFO] tweaked toml for git repo https://github.com/zklapow/duplex written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/zklapow/duplex already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded net2 v0.2.27
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3f987a0c1bf48c3e6a15cb0eb28e19fb36ced323ab851fbd49ecc0de6e5a1376
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3f987a0c1bf48c3e6a15cb0eb28e19fb36ced323ab851fbd49ecc0de6e5a1376", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3f987a0c1bf48c3e6a15cb0eb28e19fb36ced323ab851fbd49ecc0de6e5a1376", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f987a0c1bf48c3e6a15cb0eb28e19fb36ced323ab851fbd49ecc0de6e5a1376", kill_on_drop: false }`
[INFO] [stdout] 3f987a0c1bf48c3e6a15cb0eb28e19fb36ced323ab851fbd49ecc0de6e5a1376
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4d9f43d766b84c7b0bf2cbc3804dfd28a528b7d2d6fc38be7bd9b21b44383580
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "4d9f43d766b84c7b0bf2cbc3804dfd28a528b7d2d6fc38be7bd9b21b44383580", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.22
[INFO] [stderr]    Compiling log v0.3.7
[INFO] [stderr]    Compiling cfg-if v0.1.0
[INFO] [stderr]    Compiling byteorder v1.0.0
[INFO] [stderr]    Compiling futures v0.1.13
[INFO] [stderr]    Compiling num-traits v0.1.37
[INFO] [stderr]    Compiling lazycell v0.4.0
[INFO] [stderr]    Compiling unicode-segmentation v1.1.0
[INFO] [stderr]    Compiling vec_map v0.7.0
[INFO] [stderr]    Compiling iovec v0.1.0
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling net2 v0.2.27
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling time v0.1.37
[INFO] [stderr]    Compiling atty v0.2.2
[INFO] [stderr]    Compiling term_size v0.3.0
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling thread_local v0.2.7
[INFO] [stderr]    Compiling clap v2.23.3
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]    Compiling bytes v0.4.3
[INFO] [stderr]    Compiling mio v0.6.7
[INFO] [stderr]    Compiling num-integer v0.1.34
[INFO] [stderr]    Compiling regex v0.1.80
[INFO] [stderr]    Compiling num-iter v0.1.33
[INFO] [stderr]    Compiling num v0.1.37
[INFO] [stderr]    Compiling chrono v0.3.1
[INFO] [stderr]    Compiling tokio-io v0.1.1
[INFO] [stderr]    Compiling tokio-service v0.1.0
[INFO] [stderr]    Compiling tokio-core v0.1.6
[INFO] [stderr]    Compiling env_logger v0.3.5
[INFO] [stderr]    Compiling tokio-proto v0.1.1
[INFO] [stderr]    Compiling duplex v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> src/proxy.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Shutdown`
[INFO] [stdout]  --> src/proxy.rs:5:16
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::net::{Shutdown, SocketAddr};
[INFO] [stdout]   |                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AsyncWrite`
[INFO] [stdout]  --> src/proxy.rs:9:27
[INFO] [stdout]   |
[INFO] [stdout] 9 | use tokio_io::{AsyncRead, AsyncWrite};
[INFO] [stdout]   |                           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `shutdown`
[INFO] [stdout]   --> src/proxy.rs:10:26
[INFO] [stdout]    |
[INFO] [stdout] 10 | use tokio_io::io::{copy, shutdown};
[INFO] [stdout]    |                          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::io;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/proxy.rs:66:75
[INFO] [stdout]    |
[INFO] [stdout] 66 |                 Err(e) => Err(io::Error::new(io::ErrorKind::WouldBlock, e.description()))
[INFO] [stdout]    |                                                                           ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `res`
[INFO] [stdout]   --> src/main.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let res = match matches.subcommand() {
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_res`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.02s
[INFO] running `Command { std: "docker" "inspect" "4d9f43d766b84c7b0bf2cbc3804dfd28a528b7d2d6fc38be7bd9b21b44383580", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d9f43d766b84c7b0bf2cbc3804dfd28a528b7d2d6fc38be7bd9b21b44383580", kill_on_drop: false }`
[INFO] [stdout] 4d9f43d766b84c7b0bf2cbc3804dfd28a528b7d2d6fc38be7bd9b21b44383580
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 39e957eabbd323e95cf931b22fc1983ae16cf6bf91a6e0b4cd8b0aa5ffd45780
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "39e957eabbd323e95cf931b22fc1983ae16cf6bf91a6e0b4cd8b0aa5ffd45780", kill_on_drop: false }`
[INFO] [stderr]    Compiling duplex v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> src/proxy.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Shutdown`
[INFO] [stdout]  --> src/proxy.rs:5:16
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::net::{Shutdown, SocketAddr};
[INFO] [stdout]   |                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AsyncWrite`
[INFO] [stdout]  --> src/proxy.rs:9:27
[INFO] [stdout]   |
[INFO] [stdout] 9 | use tokio_io::{AsyncRead, AsyncWrite};
[INFO] [stdout]   |                           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `shutdown`
[INFO] [stdout]   --> src/proxy.rs:10:26
[INFO] [stdout]    |
[INFO] [stdout] 10 | use tokio_io::io::{copy, shutdown};
[INFO] [stdout]    |                          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::io;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/proxy.rs:66:75
[INFO] [stdout]    |
[INFO] [stdout] 66 |                 Err(e) => Err(io::Error::new(io::ErrorKind::WouldBlock, e.description()))
[INFO] [stdout]    |                                                                           ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `res`
[INFO] [stdout]   --> src/main.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let res = match matches.subcommand() {
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_res`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `Command { std: "docker" "inspect" "39e957eabbd323e95cf931b22fc1983ae16cf6bf91a6e0b4cd8b0aa5ffd45780", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39e957eabbd323e95cf931b22fc1983ae16cf6bf91a6e0b4cd8b0aa5ffd45780", kill_on_drop: false }`
[INFO] [stdout] 39e957eabbd323e95cf931b22fc1983ae16cf6bf91a6e0b4cd8b0aa5ffd45780
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e6aeee192ae9154c3237a5f1eaf96a6a76fc9a77d44e523e01da6b875c52f29c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e6aeee192ae9154c3237a5f1eaf96a6a76fc9a77d44e523e01da6b875c52f29c", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::cell::RefCell`
[INFO] [stderr]  --> src/proxy.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::cell::RefCell;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Shutdown`
[INFO] [stderr]  --> src/proxy.rs:5:16
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::net::{Shutdown, SocketAddr};
[INFO] [stderr]   |                ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `AsyncWrite`
[INFO] [stderr]  --> src/proxy.rs:9:27
[INFO] [stderr]   |
[INFO] [stderr] 9 | use tokio_io::{AsyncRead, AsyncWrite};
[INFO] [stderr]   |                           ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `shutdown`
[INFO] [stderr]   --> src/proxy.rs:10:26
[INFO] [stderr]    |
[INFO] [stderr] 10 | use tokio_io::io::{copy, shutdown};
[INFO] [stderr]    |                          ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io`
[INFO] [stderr]   --> src/main.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 | use std::io;
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]   --> src/proxy.rs:66:75
[INFO] [stderr]    |
[INFO] [stderr] 66 |                 Err(e) => Err(io::Error::new(io::ErrorKind::WouldBlock, e.description()))
[INFO] [stderr]    |                                                                           ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `res`
[INFO] [stderr]   --> src/main.rs:43:9
[INFO] [stderr]    |
[INFO] [stderr] 43 |     let res = match matches.subcommand() {
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_res`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `duplex` (bin "duplex" test) generated 7 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/duplex-439959c313891935)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e6aeee192ae9154c3237a5f1eaf96a6a76fc9a77d44e523e01da6b875c52f29c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6aeee192ae9154c3237a5f1eaf96a6a76fc9a77d44e523e01da6b875c52f29c", kill_on_drop: false }`
[INFO] [stdout] e6aeee192ae9154c3237a5f1eaf96a6a76fc9a77d44e523e01da6b875c52f29c