[INFO] cloning repository https://github.com/jeromefroe/echo-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jeromefroe/echo-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjeromefroe%2Fecho-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjeromefroe%2Fecho-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5a906a440f3edc24b95f0f257b2f66377c8a6dcb
[INFO] testing jeromefroe/echo-rs against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjeromefroe%2Fecho-rs" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jeromefroe/echo-rs on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jeromefroe/echo-rs
[INFO] finished tweaking git repo https://github.com/jeromefroe/echo-rs
[INFO] tweaked toml for git repo https://github.com/jeromefroe/echo-rs written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/jeromefroe/echo-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/tokio-rs/tokio-tls`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mio v0.6.0
[INFO] [stderr]   Downloaded futures v0.1.3
[INFO] [stderr]   Downloaded tokio-core v0.1.0
[INFO] [stderr]   Downloaded security-framework-sys v0.1.8
[INFO] [stderr]   Downloaded security-framework v0.1.8
[INFO] [stderr]   Downloaded schannel v0.1.0
[INFO] [stderr]   Downloaded openssl-verify v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 956c7bf5913a57b1d88ca933f3aa58790383707e0ce1d34cc58656fcdc434a03
[INFO] running `Command { std: "docker" "start" "-a" "956c7bf5913a57b1d88ca933f3aa58790383707e0ce1d34cc58656fcdc434a03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "956c7bf5913a57b1d88ca933f3aa58790383707e0ce1d34cc58656fcdc434a03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "956c7bf5913a57b1d88ca933f3aa58790383707e0ce1d34cc58656fcdc434a03", kill_on_drop: false }`
[INFO] [stdout] 956c7bf5913a57b1d88ca933f3aa58790383707e0ce1d34cc58656fcdc434a03
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=forbid" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7e8ea7ab08688fbcac932829bb02b69e2b65ecf8aa37da4b78edabc692210690
[INFO] running `Command { std: "docker" "start" "-a" "7e8ea7ab08688fbcac932829bb02b69e2b65ecf8aa37da4b78edabc692210690", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.17
[INFO] [stderr]    Compiling pkg-config v0.3.8
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]    Compiling cfg-if v0.1.0
[INFO] [stderr]    Compiling openssl v0.8.3
[INFO] [stderr]    Compiling bitflags v0.4.0
[INFO] [stderr]    Compiling log v0.3.6
[INFO] [stderr]    Compiling bitflags v0.7.0
[INFO] [stderr]    Compiling lazy_static v0.2.1
[INFO] [stderr]    Compiling futures v0.1.3
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]    Compiling net2 v0.2.26
[INFO] [stderr]    Compiling openssl-sys v0.7.17
[INFO] [stderr]    Compiling nix v0.6.0
[INFO] [stderr]    Compiling openssl-verify v0.2.0
[INFO] [stderr]    Compiling mio v0.6.0
[INFO] [stderr]    Compiling tokio-core v0.1.0
[INFO] [stderr]    Compiling tokio-tls v0.1.0 (https://github.com/tokio-rs/tokio-tls#3d49e52e)
[INFO] [stderr]    Compiling echo-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Evented`
[INFO] [stdout]  --> src/bin/echo_mio.rs:6:48
[INFO] [stdout]   |
[INFO] [stdout] 6 | use mio::{Token, Ready, Events, Poll, PollOpt, Evented};
[INFO] [stdout]   |                                                ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `buf`
[INFO] [stdout]   --> src/bin/echo_mio.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     buf: [u8; 512],
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/echo_mio.rs:104:25
[INFO] [stdout]     |
[INFO] [stdout] 104 |                         poll.deregister(&conn.handle);
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.76s
[INFO] running `Command { std: "docker" "inspect" "7e8ea7ab08688fbcac932829bb02b69e2b65ecf8aa37da4b78edabc692210690", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e8ea7ab08688fbcac932829bb02b69e2b65ecf8aa37da4b78edabc692210690", kill_on_drop: false }`
[INFO] [stdout] 7e8ea7ab08688fbcac932829bb02b69e2b65ecf8aa37da4b78edabc692210690
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=forbid" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d8b1d9225883182ab3bc54aad3f72da0a09e49d6244df47aaa5a4e3ba8795b56
[INFO] running `Command { std: "docker" "start" "-a" "d8b1d9225883182ab3bc54aad3f72da0a09e49d6244df47aaa5a4e3ba8795b56", kill_on_drop: false }`
[INFO] [stderr]    Compiling echo-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Evented`
[INFO] [stdout]  --> src/bin/echo_mio.rs:6:48
[INFO] [stdout]   |
[INFO] [stdout] 6 | use mio::{Token, Ready, Events, Poll, PollOpt, Evented};
[INFO] [stdout]   |                                                ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `buf`
[INFO] [stdout]   --> src/bin/echo_mio.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     buf: [u8; 512],
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/echo_mio.rs:104:25
[INFO] [stdout]     |
[INFO] [stdout] 104 |                         poll.deregister(&conn.handle);
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.28s
[INFO] running `Command { std: "docker" "inspect" "d8b1d9225883182ab3bc54aad3f72da0a09e49d6244df47aaa5a4e3ba8795b56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8b1d9225883182ab3bc54aad3f72da0a09e49d6244df47aaa5a4e3ba8795b56", kill_on_drop: false }`
[INFO] [stdout] d8b1d9225883182ab3bc54aad3f72da0a09e49d6244df47aaa5a4e3ba8795b56
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=forbid" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e56f7017a2b96820279d601b57157657f7ea32ff9f03d2653d8ba6188b83509e
[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" "e56f7017a2b96820279d601b57157657f7ea32ff9f03d2653d8ba6188b83509e", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused import: `Evented`
[INFO] [stdout] running 0 tests
[INFO] [stderr]  --> src/bin/echo_mio.rs:6:48
[INFO] [stdout] 
[INFO] [stderr]   |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 6 | use mio::{Token, Ready, Events, Poll, PollOpt, Evented};
[INFO] [stdout] 
[INFO] [stderr]   |                                                ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `buf`
[INFO] [stderr]   --> src/bin/echo_mio.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     buf: [u8; 512],
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/bin/echo_mio.rs:104:25
[INFO] [stderr]     |
[INFO] [stderr] 104 |                         poll.deregister(&conn.handle);
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/echo_futures-a4783b8c1e50d68a)
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/echo_mio-aade0a7fd7d81421)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/echo_threaded-c296d554e63b5bc8)
[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] [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" "e56f7017a2b96820279d601b57157657f7ea32ff9f03d2653d8ba6188b83509e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e56f7017a2b96820279d601b57157657f7ea32ff9f03d2653d8ba6188b83509e", kill_on_drop: false }`
[INFO] [stdout] e56f7017a2b96820279d601b57157657f7ea32ff9f03d2653d8ba6188b83509e