[INFO] cloning repository https://github.com/sdbondi/tower-examples [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sdbondi/tower-examples" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsdbondi%2Ftower-examples", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsdbondi%2Ftower-examples'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 05080a8e931e8b1316c5756b4bed9ccb1f4d3374 [INFO] checking sdbondi/tower-examples against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsdbondi%2Ftower-examples" "/workspace/builds/worker-1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/sdbondi/tower-examples on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/sdbondi/tower-examples [INFO] finished tweaking git repo https://github.com/sdbondi/tower-examples [INFO] tweaked toml for git repo https://github.com/sdbondi/tower-examples written to /workspace/builds/worker-1/source/Cargo.toml [INFO] crate git repo https://github.com/sdbondi/tower-examples already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded tower v0.1.1 [INFO] [stderr] Downloaded tower-load-shed v0.1.0 [INFO] [stderr] Downloaded tower-service v0.2.0 [INFO] [stderr] Downloaded tower-buffer v0.1.1 [INFO] [stderr] Downloaded tower-limit v0.1.0 [INFO] [stderr] Downloaded tracing-core v0.1.2 [INFO] [stderr] Downloaded tower-retry v0.1.0 [INFO] [stderr] Downloaded tower-discover v0.1.0 [INFO] [stderr] Downloaded tower-timeout v0.1.1 [INFO] [stderr] Downloaded tower-util v0.1.0 [INFO] [stderr] Downloaded tower-layer v0.1.0 [INFO] [stderr] Downloaded tracing v0.1.3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "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] 59d81475ab003a069c10155fa6c1356728fb9ca979db19544d5e39e643ee0825 [INFO] running `Command { std: "docker" "start" "-a" "59d81475ab003a069c10155fa6c1356728fb9ca979db19544d5e39e643ee0825", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "59d81475ab003a069c10155fa6c1356728fb9ca979db19544d5e39e643ee0825", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "59d81475ab003a069c10155fa6c1356728fb9ca979db19544d5e39e643ee0825", kill_on_drop: false }` [INFO] [stdout] 59d81475ab003a069c10155fa6c1356728fb9ca979db19544d5e39e643ee0825 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 71212c058976c65c747bd6360b048c78385c964d4760ed04a9c9b8da3b29bbcf [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" "71212c058976c65c747bd6360b048c78385c964d4760ed04a9c9b8da3b29bbcf", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Checking cfg-if v0.1.9 [INFO] [stderr] Checking futures v0.1.28 [INFO] [stderr] Compiling libc v0.2.60 [INFO] [stderr] Compiling autocfg v0.1.5 [INFO] [stderr] Compiling byteorder v1.3.2 [INFO] [stderr] Checking fnv v1.0.6 [INFO] [stderr] Checking stable_deref_trait v1.1.1 [INFO] [stderr] Compiling arrayvec v0.4.11 [INFO] [stderr] Checking smallvec v0.6.10 [INFO] [stderr] Checking tracing-core v0.1.2 [INFO] [stderr] Compiling parking_lot_core v0.4.0 [INFO] [stderr] Compiling memoffset v0.5.1 [INFO] [stderr] Checking crossbeam-utils v0.6.6 [INFO] [stderr] Checking log v0.4.8 [INFO] [stderr] Checking owning_ref v0.4.0 [INFO] [stderr] Checking lock_api v0.1.5 [INFO] [stderr] Checking tracing v0.1.3 [INFO] [stderr] Checking crossbeam-queue v0.1.2 [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-epoch v0.7.2 [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 v1.10.1 [INFO] [stderr] Checking bytes v0.4.12 [INFO] [stderr] Checking tokio-executor v0.1.8 [INFO] [stderr] Checking tower-service v0.2.0 [INFO] [stderr] Checking tokio-sync v0.1.6 [INFO] [stderr] Checking crossbeam-deque v0.7.1 [INFO] [stderr] Checking mio v0.6.19 [INFO] [stderr] Checking tower-layer v0.1.0 [INFO] [stderr] Checking tower-discover v0.1.0 [INFO] [stderr] Checking tower-load-shed v0.1.0 [INFO] [stderr] Checking tokio-timer v0.2.11 [INFO] [stderr] Checking tokio-current-thread v0.1.6 [INFO] [stderr] Checking tokio-io v0.1.12 [INFO] [stderr] Checking tower-buffer v0.1.1 [INFO] [stderr] Checking tower-retry v0.1.0 [INFO] [stderr] Checking tower-timeout v0.1.1 [INFO] [stderr] Checking tower-limit v0.1.0 [INFO] [stderr] Checking mio-uds v0.6.7 [INFO] [stderr] Checking tokio-codec v0.1.1 [INFO] [stderr] Checking tower-util v0.1.0 [INFO] [stderr] Checking tokio-threadpool v0.1.15 [INFO] [stderr] Checking tower v0.1.1 [INFO] [stderr] Checking parking_lot v0.7.1 [INFO] [stderr] Checking tokio-reactor v0.1.9 [INFO] [stderr] Checking tokio-fs v0.1.6 [INFO] [stderr] Checking tokio-tcp v0.1.3 [INFO] [stderr] Checking tokio-udp v0.1.3 [INFO] [stderr] Checking tokio-uds v0.2.5 [INFO] [stderr] Checking tokio v0.1.22 [INFO] [stderr] Checking tcpstream-play v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `tokio::codec::BytesCodec` [INFO] [stdout] --> examples/simple_server.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | use tokio::codec::BytesCodec; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> examples/simple_server.rs:59:9 [INFO] [stdout] | [INFO] [stdout] 59 | let mut handler = Handler::new(socket); [INFO] [stdout] | ----^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 7.17s [INFO] running `Command { std: "docker" "inspect" "71212c058976c65c747bd6360b048c78385c964d4760ed04a9c9b8da3b29bbcf", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "71212c058976c65c747bd6360b048c78385c964d4760ed04a9c9b8da3b29bbcf", kill_on_drop: false }` [INFO] [stdout] 71212c058976c65c747bd6360b048c78385c964d4760ed04a9c9b8da3b29bbcf