[INFO] cloning repository https://github.com/NathanJang/tokio-read-to-end-demo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/NathanJang/tokio-read-to-end-demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNathanJang%2Ftokio-read-to-end-demo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNathanJang%2Ftokio-read-to-end-demo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 16c685beb026642e4975aeb289c15e5323052f5c
[INFO] checking NathanJang/tokio-read-to-end-demo/16c685beb026642e4975aeb289c15e5323052f5c against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNathanJang%2Ftokio-read-to-end-demo" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/NathanJang/tokio-read-to-end-demo on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/NathanJang/tokio-read-to-end-demo
[INFO] finished tweaking git repo https://github.com/NathanJang/tokio-read-to-end-demo
[INFO] tweaked toml for git repo https://github.com/NathanJang/tokio-read-to-end-demo written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/NathanJang/tokio-read-to-end-demo already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 1 package to latest compatible version
[INFO] [stderr]       Adding tokio-read-to-end-demo v0.1.0 (/workspace/builds/worker-3-tc1/source)
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio v0.1.19
[INFO] [stderr]   Downloaded tokio-trace-core v0.1.0
[INFO] [stderr]   Downloaded tokio-executor v0.1.7
[INFO] [stderr]   Downloaded tokio-timer v0.2.10
[INFO] [stderr]   Downloaded tokio-threadpool v0.1.14
[INFO] [stderr]   Downloaded tokio-sync v0.1.5
[INFO] [stderr]   Downloaded mio v0.6.16
[INFO] [stderr]   Downloaded futures v0.1.26
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e5c7e96031eb40590d657526afb11094ef751a8f13a136825704af02525bc6db
[INFO] running `Command { std: "docker" "start" "-a" "e5c7e96031eb40590d657526afb11094ef751a8f13a136825704af02525bc6db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e5c7e96031eb40590d657526afb11094ef751a8f13a136825704af02525bc6db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5c7e96031eb40590d657526afb11094ef751a8f13a136825704af02525bc6db", kill_on_drop: false }`
[INFO] [stdout] e5c7e96031eb40590d657526afb11094ef751a8f13a136825704af02525bc6db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 825c5214223f0337585a8d1dc2200a822edd90c7343f4e017a992819a81afdaf
[INFO] running `Command { std: "docker" "start" "-a" "825c5214223f0337585a8d1dc2200a822edd90c7343f4e017a992819a81afdaf", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.51
[INFO] [stderr]     Checking cfg-if v0.1.7
[INFO] [stderr]     Checking rand_core v0.4.0
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking futures v0.1.26
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]     Checking smallvec v0.6.9
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stderr]     Checking lazycell v1.2.1
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking owning_ref v0.4.0
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]     Checking crossbeam-utils v0.6.5
[INFO] [stderr]     Checking tokio-trace-core v0.1.0
[INFO] [stderr]     Checking lock_api v0.1.5
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.3
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking crossbeam-epoch v0.7.1
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking num_cpus v1.10.0
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking mio v0.6.16
[INFO] [stderr]     Checking tokio-executor v0.1.7
[INFO] [stderr]     Checking tokio-sync v0.1.5
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking tokio-current-thread v0.1.6
[INFO] [stderr]     Checking tokio-timer v0.2.10
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking tokio-threadpool v0.1.14
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking tokio-fs v0.1.6
[INFO] [stderr]     Checking tokio-reactor v0.1.9
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio-uds v0.2.5
[INFO] [stderr]     Checking tokio-udp v0.1.3
[INFO] [stderr]     Checking tokio v0.1.19
[INFO] [stderr]     Checking tokio-read-to-end-demo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `ReadToEnd` is never constructed
[INFO] [stdout]   --> src/main.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | struct ReadToEnd<A> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `State` is never used
[INFO] [stdout]   --> src/main.rs:39:6
[INFO] [stdout]    |
[INFO] [stdout] 39 | enum State<A> {
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_to_end` is never used
[INFO] [stdout]   --> src/main.rs:50:4
[INFO] [stdout]    |
[INFO] [stdout] 50 | fn read_to_end<A>(a: A, buf: Vec<u8>) -> ReadToEnd<A>
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ReadToEnd` is never constructed
[INFO] [stdout]   --> src/main.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | struct ReadToEnd<A> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `State` is never used
[INFO] [stdout]   --> src/main.rs:39:6
[INFO] [stdout]    |
[INFO] [stdout] 39 | enum State<A> {
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_to_end` is never used
[INFO] [stdout]   --> src/main.rs:50:4
[INFO] [stdout]    |
[INFO] [stdout] 50 | fn read_to_end<A>(a: A, buf: Vec<u8>) -> ReadToEnd<A>
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.70s
[INFO] running `Command { std: "docker" "inspect" "825c5214223f0337585a8d1dc2200a822edd90c7343f4e017a992819a81afdaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "825c5214223f0337585a8d1dc2200a822edd90c7343f4e017a992819a81afdaf", kill_on_drop: false }`
[INFO] [stdout] 825c5214223f0337585a8d1dc2200a822edd90c7343f4e017a992819a81afdaf