[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 master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjeromefroe%2Fecho-rs" "/workspace/builds/worker-97/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-97/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jeromefroe/echo-rs on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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-97/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/tokio-rs/tokio-tls`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-97/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-97/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bd833a7f719e8a2ed0f33714581007f2da01b988b562b45e3dba940c88f177ca
[INFO] running `Command { std: "docker" "start" "-a" "bd833a7f719e8a2ed0f33714581007f2da01b988b562b45e3dba940c88f177ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bd833a7f719e8a2ed0f33714581007f2da01b988b562b45e3dba940c88f177ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd833a7f719e8a2ed0f33714581007f2da01b988b562b45e3dba940c88f177ca", kill_on_drop: false }`
[INFO] [stdout] bd833a7f719e8a2ed0f33714581007f2da01b988b562b45e3dba940c88f177ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-97/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-97/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8471cc3b1a1ef65013512a6741c4a494675afa34e7277eff18dad007db42fe9b
[INFO] running `Command { std: "docker" "start" "-a" "8471cc3b1a1ef65013512a6741c4a494675afa34e7277eff18dad007db42fe9b", 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 log v0.3.6
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling openssl v0.8.3
[INFO] [stderr]    Compiling bitflags v0.4.0
[INFO] [stderr]    Compiling lazy_static v0.2.1
[INFO] [stderr]    Compiling slab v0.3.0
[INFO] [stderr]    Compiling lazycell v0.4.0
[INFO] [stderr]    Compiling bitflags v0.7.0
[INFO] [stderr]    Compiling scoped-tls v0.1.0
[INFO] [stderr]    Compiling net2 v0.2.26
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]    Compiling openssl-sys v0.7.17
[INFO] [stderr]    Compiling futures v0.1.3
[INFO] [stderr]    Compiling nix v0.6.0
[INFO] [stderr]    Compiling mio v0.6.0
[INFO] [stderr]    Compiling openssl-verify v0.2.0
[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 1m 57s
[INFO] running `Command { std: "docker" "inspect" "8471cc3b1a1ef65013512a6741c4a494675afa34e7277eff18dad007db42fe9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8471cc3b1a1ef65013512a6741c4a494675afa34e7277eff18dad007db42fe9b", kill_on_drop: false }`
[INFO] [stdout] 8471cc3b1a1ef65013512a6741c4a494675afa34e7277eff18dad007db42fe9b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-97/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-97/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a6c94e1e102d1e085fe4a5c75315443185ef00625eba450d607d3103bde6a4b6
[INFO] running `Command { std: "docker" "start" "-a" "a6c94e1e102d1e085fe4a5c75315443185ef00625eba450d607d3103bde6a4b6", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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 0.71s
[INFO] running `Command { std: "docker" "inspect" "a6c94e1e102d1e085fe4a5c75315443185ef00625eba450d607d3103bde6a4b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6c94e1e102d1e085fe4a5c75315443185ef00625eba450d607d3103bde6a4b6", kill_on_drop: false }`
[INFO] [stdout] a6c94e1e102d1e085fe4a5c75315443185ef00625eba450d607d3103bde6a4b6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-97/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-97/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 477b2fea254632664986445054f1ff1625d1f54d93e445248ac309265e7e5f16
[INFO] running `Command { std: "docker" "start" "-a" "477b2fea254632664986445054f1ff1625d1f54d93e445248ac309265e7e5f16", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `Evented`
[INFO] [stderr]  --> src/bin/echo_mio.rs:6:48
[INFO] [stderr]   |
[INFO] [stderr] 6 | use mio::{Token, Ready, Events, Poll, PollOpt, Evented};
[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: `echo-rs` (bin "echo_mio" test) generated 3 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/echo_futures-2d53f21243447659)
[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] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/echo_mio-846f6268796b5495)
[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] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/echo_threaded-b8d82f3c1f19cb2f)
[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" "477b2fea254632664986445054f1ff1625d1f54d93e445248ac309265e7e5f16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "477b2fea254632664986445054f1ff1625d1f54d93e445248ac309265e7e5f16", kill_on_drop: false }`
[INFO] [stdout] 477b2fea254632664986445054f1ff1625d1f54d93e445248ac309265e7e5f16