[INFO] cloning repository https://github.com/jonhoo/tower-buffer-benchmark [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jonhoo/tower-buffer-benchmark" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonhoo%2Ftower-buffer-benchmark", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonhoo%2Ftower-buffer-benchmark'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] d3f402a5678948c542f50009e14a958ad30c2a14 [INFO] checking jonhoo/tower-buffer-benchmark against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonhoo%2Ftower-buffer-benchmark" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/jonhoo/tower-buffer-benchmark on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/jonhoo/tower-buffer-benchmark [INFO] finished tweaking git repo https://github.com/jonhoo/tower-buffer-benchmark [INFO] tweaked toml for git repo https://github.com/jonhoo/tower-buffer-benchmark written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/jonhoo/tower-buffer-benchmark 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded quanta v0.3.1 [INFO] [stderr] Downloaded tracing-timing v0.2.8 [INFO] [stderr] Downloaded tower-discover v0.1.0 [INFO] [stderr] Downloaded tower-layer v0.1.0 [INFO] [stderr] Downloaded tower-service v0.2.0 [INFO] [stderr] Downloaded tower-util v0.1.0 [INFO] [stderr] Downloaded miniz_oxide v0.2.2 [INFO] [stderr] Downloaded tokio-threadpool v0.1.15 [INFO] [stderr] Downloaded tokio-sync v0.1.6 [INFO] [stderr] Downloaded miniz_oxide_c_api v0.2.2 [INFO] [stderr] Downloaded hdrhistogram v6.3.4 [INFO] [stderr] Downloaded flate2 v1.0.9 [INFO] [stderr] Downloaded tower-retry v0.1.0 [INFO] [stderr] Downloaded tower-timeout v0.1.0 [INFO] [stderr] Downloaded tower-load-shed v0.1.0 [INFO] [stderr] Downloaded tracing v0.1.2 [INFO] [stderr] Downloaded tower-limit v0.1.0 [INFO] [stderr] Downloaded tracing-core v0.1.1 [INFO] [stderr] Downloaded tower-buffer v0.1.0 [INFO] [stderr] Downloaded tower v0.1.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] ad1f7879300053454a229521b5659727e5126e88bd7293dff6d4fee45d488545 [INFO] running `Command { std: "docker" "start" "-a" "ad1f7879300053454a229521b5659727e5126e88bd7293dff6d4fee45d488545", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ad1f7879300053454a229521b5659727e5126e88bd7293dff6d4fee45d488545", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ad1f7879300053454a229521b5659727e5126e88bd7293dff6d4fee45d488545", kill_on_drop: false }` [INFO] [stdout] ad1f7879300053454a229521b5659727e5126e88bd7293dff6d4fee45d488545 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 2d132581ac49a34a75da17dac4d3949f1286b0b8917b83d6bc920c911711177d [INFO] running `Command { std: "docker" "start" "-a" "2d132581ac49a34a75da17dac4d3949f1286b0b8917b83d6bc920c911711177d", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.59 [INFO] [stderr] Checking futures v0.1.28 [INFO] [stderr] Compiling autocfg v0.1.4 [INFO] [stderr] Checking crossbeam-utils v0.6.5 [INFO] [stderr] Checking rand_core v0.4.0 [INFO] [stderr] Compiling byteorder v1.3.2 [INFO] [stderr] Checking log v0.4.6 [INFO] [stderr] Checking scopeguard v0.3.3 [INFO] [stderr] Checking smallvec v0.6.10 [INFO] [stderr] Checking rand_core v0.3.1 [INFO] [stderr] Checking rand_jitter v0.1.4 [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 fnv v1.0.6 [INFO] [stderr] Compiling arrayvec v0.4.10 [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] Compiling parking_lot_core v0.4.0 [INFO] [stderr] Checking stable_deref_trait v1.1.1 [INFO] [stderr] Checking memoffset v0.2.1 [INFO] [stderr] Checking owning_ref v0.4.0 [INFO] [stderr] Compiling cc v1.0.37 [INFO] [stderr] Checking crossbeam-queue v0.1.2 [INFO] [stderr] Compiling num-traits v0.2.8 [INFO] [stderr] Checking crossbeam-channel v0.3.8 [INFO] [stderr] Checking lock_api v0.1.5 [INFO] [stderr] Checking iovec v0.1.2 [INFO] [stderr] Checking rand_os v0.1.3 [INFO] [stderr] Checking bytes v0.4.12 [INFO] [stderr] Checking net2 v0.2.33 [INFO] [stderr] Checking num_cpus v1.10.1 [INFO] [stderr] Checking crossbeam-epoch v0.7.1 [INFO] [stderr] Checking base64 v0.10.1 [INFO] [stderr] Checking tokio-executor v0.1.8 [INFO] [stderr] Checking tower-service v0.2.0 [INFO] [stderr] Checking tokio-io v0.1.12 [INFO] [stderr] Checking tokio-sync v0.1.6 [INFO] [stderr] Checking tower-layer v0.1.0 [INFO] [stderr] Checking mio v0.6.19 [INFO] [stderr] Checking tokio-timer v0.2.11 [INFO] [stderr] Checking crossbeam-deque v0.7.1 [INFO] [stderr] Checking tracing-core v0.1.1 [INFO] [stderr] Checking tower-buffer v0.1.0 [INFO] [stderr] Checking crossbeam v0.7.1 [INFO] [stderr] Checking tokio-codec v0.1.1 [INFO] [stderr] Checking tower-timeout v0.1.0 [INFO] [stderr] Checking tower-retry v0.1.0 [INFO] [stderr] Checking tower-limit v0.1.0 [INFO] [stderr] Checking tower-util v0.1.0 [INFO] [stderr] Compiling miniz-sys v0.1.12 [INFO] [stderr] Checking tower-load-shed v0.1.0 [INFO] [stderr] Checking tokio-current-thread v0.1.6 [INFO] [stderr] Checking tower-discover v0.1.0 [INFO] [stderr] Checking quanta v0.3.1 [INFO] [stderr] Checking fxhash v0.2.1 [INFO] [stderr] Checking tokio-threadpool v0.1.15 [INFO] [stderr] Checking tracing v0.1.2 [INFO] [stderr] Checking mio-uds v0.6.7 [INFO] [stderr] Checking tower v0.1.0 [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-udp v0.1.3 [INFO] [stderr] Checking tokio-uds v0.2.5 [INFO] [stderr] Checking tokio-tcp v0.1.3 [INFO] [stderr] Checking flate2 v1.0.9 [INFO] [stderr] Checking tokio v0.1.22 [INFO] [stderr] Checking hdrhistogram v6.3.4 [INFO] [stderr] Checking tracing-timing v0.2.8 [INFO] [stderr] Checking tokio-mpx v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.28s [INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: hdrhistogram v6.3.4, nom v4.2.3 [INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3` [INFO] running `Command { std: "docker" "inspect" "2d132581ac49a34a75da17dac4d3949f1286b0b8917b83d6bc920c911711177d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2d132581ac49a34a75da17dac4d3949f1286b0b8917b83d6bc920c911711177d", kill_on_drop: false }` [INFO] [stdout] 2d132581ac49a34a75da17dac4d3949f1286b0b8917b83d6bc920c911711177d [INFO] checking jonhoo/tower-buffer-benchmark against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonhoo%2Ftower-buffer-benchmark" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/jonhoo/tower-buffer-benchmark on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/jonhoo/tower-buffer-benchmark [INFO] finished tweaking git repo https://github.com/jonhoo/tower-buffer-benchmark [INFO] tweaked toml for git repo https://github.com/jonhoo/tower-buffer-benchmark written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/jonhoo/tower-buffer-benchmark 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 425d9be1797743f6c7847c9cc74538d2144bcab28e17f14a96e8269f08720562 [INFO] running `Command { std: "docker" "start" "-a" "425d9be1797743f6c7847c9cc74538d2144bcab28e17f14a96e8269f08720562", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "425d9be1797743f6c7847c9cc74538d2144bcab28e17f14a96e8269f08720562", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "425d9be1797743f6c7847c9cc74538d2144bcab28e17f14a96e8269f08720562", kill_on_drop: false }` [INFO] [stdout] 425d9be1797743f6c7847c9cc74538d2144bcab28e17f14a96e8269f08720562 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] d099ea9ea82d73183b3b109bef09d56a8487bb70cea5c3ee8c233785d8c8fc69 [INFO] running `Command { std: "docker" "start" "-a" "d099ea9ea82d73183b3b109bef09d56a8487bb70cea5c3ee8c233785d8c8fc69", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.59 [INFO] [stderr] Compiling autocfg v0.1.4 [INFO] [stderr] Checking futures v0.1.28 [INFO] [stderr] Checking rand_core v0.4.0 [INFO] [stderr] Compiling byteorder v1.3.2 [INFO] [stderr] Checking log v0.4.6 [INFO] [stderr] Checking crossbeam-utils v0.6.5 [INFO] [stderr] Checking scopeguard v0.3.3 [INFO] [stderr] Checking smallvec v0.6.10 [INFO] [stderr] Compiling arrayvec v0.4.10 [INFO] [stderr] Checking rand_core v0.3.1 [INFO] [stderr] Checking rand_isaac v0.1.1 [INFO] [stderr] Checking rand_hc v0.1.0 [INFO] [stderr] Checking rand_xorshift v0.1.1 [INFO] [stderr] Checking rand_jitter v0.1.4 [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 fnv v1.0.6 [INFO] [stderr] Compiling parking_lot_core v0.4.0 [INFO] [stderr] Checking stable_deref_trait v1.1.1 [INFO] [stderr] Checking owning_ref v0.4.0 [INFO] [stderr] Checking memoffset v0.2.1 [INFO] [stderr] Compiling cc v1.0.37 [INFO] [stderr] Checking crossbeam-queue v0.1.2 [INFO] [stderr] Compiling num-traits v0.2.8 [INFO] [stderr] Checking lock_api v0.1.5 [INFO] [stderr] Checking crossbeam-channel v0.3.8 [INFO] [stderr] Checking crossbeam-epoch v0.7.1 [INFO] [stderr] Checking iovec v0.1.2 [INFO] [stderr] Checking rand_os v0.1.3 [INFO] [stderr] Checking num_cpus v1.10.1 [INFO] [stderr] Checking bytes v0.4.12 [INFO] [stderr] Checking net2 v0.2.33 [INFO] [stderr] Checking crossbeam-deque v0.7.1 [INFO] [stderr] Checking mio v0.6.19 [INFO] [stderr] Checking base64 v0.10.1 [INFO] [stderr] Checking tracing-core v0.1.1 [INFO] [stderr] Checking tokio-executor v0.1.8 [INFO] [stderr] Checking tower-service v0.2.0 [INFO] [stderr] Checking tokio-io v0.1.12 [INFO] [stderr] Checking tokio-sync v0.1.6 [INFO] [stderr] Checking tower-layer v0.1.0 [INFO] [stderr] Checking tokio-timer v0.2.11 [INFO] [stderr] Checking mio-uds v0.6.7 [INFO] [stderr] Checking tower-load-shed v0.1.0 [INFO] [stderr] Checking tokio-codec v0.1.1 [INFO] [stderr] Checking tower-util v0.1.0 [INFO] [stderr] Checking tokio-current-thread v0.1.6 [INFO] [stderr] Checking tower-discover v0.1.0 [INFO] [stderr] Checking tower-timeout v0.1.0 [INFO] [stderr] Checking tower-retry v0.1.0 [INFO] [stderr] Checking tower-limit v0.1.0 [INFO] [stderr] Checking tower-buffer v0.1.0 [INFO] [stderr] Checking crossbeam v0.7.1 [INFO] [stderr] Checking quanta v0.3.1 [INFO] [stderr] Compiling miniz-sys v0.1.12 [INFO] [stderr] Checking fxhash v0.2.1 [INFO] [stderr] Checking tracing v0.1.2 [INFO] [stderr] Checking tower v0.1.0 [INFO] [stderr] Checking tokio-threadpool v0.1.15 [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-udp v0.1.3 [INFO] [stderr] Checking tokio-uds v0.2.5 [INFO] [stderr] Checking tokio-tcp v0.1.3 [INFO] [stderr] Checking flate2 v1.0.9 [INFO] [stderr] Checking hdrhistogram v6.3.4 [INFO] [stderr] Checking tokio v0.1.22 [INFO] [stderr] Checking tracing-timing v0.2.8 [INFO] [stderr] Checking tokio-mpx v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.88s [INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: hdrhistogram v6.3.4, nom v4.2.3 [INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3` [INFO] running `Command { std: "docker" "inspect" "d099ea9ea82d73183b3b109bef09d56a8487bb70cea5c3ee8c233785d8c8fc69", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d099ea9ea82d73183b3b109bef09d56a8487bb70cea5c3ee8c233785d8c8fc69", kill_on_drop: false }` [INFO] [stdout] d099ea9ea82d73183b3b109bef09d56a8487bb70cea5c3ee8c233785d8c8fc69