[INFO] cloning repository https://github.com/whh8162880/rustlib
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/whh8162880/rustlib" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwhh8162880%2Frustlib", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwhh8162880%2Frustlib'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1404f02282866babeec4434da837eaa7ebd42c1a
[INFO] checking whh8162880/rustlib against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwhh8162880%2Frustlib" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/whh8162880/rustlib on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/whh8162880/rustlib
[INFO] finished tweaking git repo https://github.com/whh8162880/rustlib
[INFO] tweaked toml for git repo https://github.com/whh8162880/rustlib written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/whh8162880/rustlib already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded futures-timer v3.0.2
[INFO] [stderr]   Downloaded once_cell v1.4.0
[INFO] [stderr]   Downloaded tokio-executor v0.1.10
[INFO] [stderr]   Downloaded tokio-sync v0.1.8
[INFO] [stderr]   Downloaded proc-macro2 v1.0.19
[INFO] [stderr]   Downloaded chrono v0.4.13
[INFO] [stderr]   Downloaded hyper v0.10.16
[INFO] [stderr]   Downloaded tokio-codec v0.1.2
[INFO] [stderr]   Downloaded serde v1.0.114
[INFO] [stderr]   Downloaded syn v1.0.38
[INFO] [stderr]   Downloaded tokio-tcp v0.1.4
[INFO] [stderr]   Downloaded cc v1.0.58
[INFO] [stderr]   Downloaded settimeout v0.1.2
[INFO] [stderr]   Downloaded libc v0.2.74
[INFO] [stderr]   Downloaded websocket-base v0.26.2
[INFO] [stderr]   Downloaded tokio-tls v0.2.1
[INFO] [stderr]   Downloaded websocket v0.26.2
[INFO] [stderr]   Downloaded net2 v0.2.34
[INFO] [stderr]   Downloaded tokio-reactor v0.1.12
[INFO] [stderr]   Downloaded tokio-io v0.1.13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e4fd57daf10cf6b015720388db3cef607d0088325b8e5950d125baee4b30fe7d
[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" "e4fd57daf10cf6b015720388db3cef607d0088325b8e5950d125baee4b30fe7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e4fd57daf10cf6b015720388db3cef607d0088325b8e5950d125baee4b30fe7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4fd57daf10cf6b015720388db3cef607d0088325b8e5950d125baee4b30fe7d", kill_on_drop: false }`
[INFO] [stdout] e4fd57daf10cf6b015720388db3cef607d0088325b8e5950d125baee4b30fe7d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--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] a0b264ffc28f687590d72735da62f3859e517f04c1ffbd561ec9d76ccf1e03a7
[INFO] running `Command { std: "docker" "start" "-a" "a0b264ffc28f687590d72735da62f3859e517f04c1ffbd561ec9d76ccf1e03a7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling cc v1.0.58
[INFO] [stderr]    Compiling pkg-config v0.3.18
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking futures v0.1.29
[INFO] [stderr]    Compiling syn v1.0.38
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling openssl v0.10.30
[INFO] [stderr]    Compiling native-tls v0.2.4
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]    Compiling proc-macro-nested v0.1.6
[INFO] [stderr]     Checking tinyvec v0.3.3
[INFO] [stderr]     Checking futures-core v0.3.5
[INFO] [stderr]     Checking once_cell v1.4.0
[INFO] [stderr]     Checking futures-sink v0.3.5
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking safemem v0.3.3
[INFO] [stderr]     Checking futures-io v0.3.5
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking typeable v0.1.2
[INFO] [stderr]     Checking language-tags v0.2.2
[INFO] [stderr]     Checking futures-timer v3.0.2
[INFO] [stderr]     Checking settimeout v0.1.2
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]     Checking futures-task v0.3.5
[INFO] [stderr]     Checking futures-channel v0.3.5
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking unicode-normalization v0.1.13
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking smallvec v0.6.13
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking tokio-sync v0.1.8
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]     Checking sha-1 v0.8.2
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling openssl-sys v0.9.58
[INFO] [stderr]     Checking tokio-executor v0.1.10
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.34
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking tokio-codec v0.1.2
[INFO] [stderr]     Checking tokio-tcp v0.1.4
[INFO] [stderr]     Checking hyper v0.10.16
[INFO] [stderr]     Checking chrono v0.4.13
[INFO] [stderr]     Checking tokio-tls v0.2.1
[INFO] [stderr]     Checking websocket-base v0.26.2
[INFO] [stderr]     Checking websocket v0.26.2
[INFO] [stderr]    Compiling pin-project-internal v0.4.23
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]     Checking pin-project v0.4.23
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking futures-executor v0.3.5
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]     Checking hello v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `futures::executor::block_on`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use futures::executor::block_on;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::executor::block_on`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use futures::executor::block_on;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `start`
[INFO] [stdout]   --> src/engine.rs:13:14
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub async fn start(){
[INFO] [stdout]    |              ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused implementer of `futures::Future` that must be used
[INFO] [stdout]   --> src/engine.rs:66:9
[INFO] [stdout]    |
[INFO] [stdout] 66 |         engine::start();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: futures do nothing unless you `.await` or poll them
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 23s
[INFO] running `Command { std: "docker" "inspect" "a0b264ffc28f687590d72735da62f3859e517f04c1ffbd561ec9d76ccf1e03a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0b264ffc28f687590d72735da62f3859e517f04c1ffbd561ec9d76ccf1e03a7", kill_on_drop: false }`
[INFO] [stdout] a0b264ffc28f687590d72735da62f3859e517f04c1ffbd561ec9d76ccf1e03a7