[INFO] fetching crate tokio-tower 0.4.0...
[INFO] checking tokio-tower-0.4.0 against master#da897dfb6daa268a965d2d73620316ba56020a19 for pr-76219
[INFO] extracting crate tokio-tower 0.4.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate tokio-tower 0.4.0 on toolchain da897dfb6daa268a965d2d73620316ba56020a19
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+da897dfb6daa268a965d2d73620316ba56020a19" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tokio-tower 0.4.0
[INFO] finished tweaking crates.io crate tokio-tower 0.4.0
[INFO] tweaked toml for crates.io crate tokio-tower 0.4.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+da897dfb6daa268a965d2d73620316ba56020a19" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+da897dfb6daa268a965d2d73620316ba56020a19" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+da897dfb6daa268a965d2d73620316ba56020a19" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f3b72ec9f872185a347adbed74e677d3a1cb7ca15c9693b35ebbd0b01a8352dd
[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" "f3b72ec9f872185a347adbed74e677d3a1cb7ca15c9693b35ebbd0b01a8352dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f3b72ec9f872185a347adbed74e677d3a1cb7ca15c9693b35ebbd0b01a8352dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3b72ec9f872185a347adbed74e677d3a1cb7ca15c9693b35ebbd0b01a8352dd", kill_on_drop: false }`
[INFO] [stdout] f3b72ec9f872185a347adbed74e677d3a1cb7ca15c9693b35ebbd0b01a8352dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+da897dfb6daa268a965d2d73620316ba56020a19" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b3f32f1f5f46949766a71d379d772c83fa1137f9443a2287c48f36347f29cc2c
[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" "b3f32f1f5f46949766a71d379d772c83fa1137f9443a2287c48f36347f29cc2c", kill_on_drop: false }`
[INFO] [stderr]     Checking futures-core v0.3.5
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]    Compiling proc-macro-hack v0.5.18
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking tracing-core v0.1.16
[INFO] [stderr]    Compiling syn v1.0.40
[INFO] [stderr]     Checking net2 v0.2.35
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]     Checking bincode v1.3.1
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling pin-project-internal v0.4.23
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling tracing-attributes v0.1.11
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]     Checking tokio v0.2.22
[INFO] [stderr]     Checking tracing v0.1.19
[INFO] [stderr]     Checking pin-project v0.4.23
[INFO] [stderr]     Checking tower-discover v0.3.0
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking tower-load v0.3.0
[INFO] [stderr]     Checking tokio-test v0.2.1
[INFO] [stderr]     Checking async-bincode v0.5.1
[INFO] [stderr]     Checking tower-test v0.3.0
[INFO] [stderr]     Checking tokio-tower v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 43.76s
[INFO] running `Command { std: "docker" "inspect" "b3f32f1f5f46949766a71d379d772c83fa1137f9443a2287c48f36347f29cc2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3f32f1f5f46949766a71d379d772c83fa1137f9443a2287c48f36347f29cc2c", kill_on_drop: false }`
[INFO] [stdout] b3f32f1f5f46949766a71d379d772c83fa1137f9443a2287c48f36347f29cc2c