[INFO] fetching crate tox_core 0.1.0...
[INFO] checking tox_core-0.1.0 against master#c919f490bbcd2b29b74016101f7ec71aaa24bdbb for pr-79073
[INFO] extracting crate tox_core 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate tox_core 0.1.0 on toolchain c919f490bbcd2b29b74016101f7ec71aaa24bdbb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tox_core 0.1.0
[INFO] finished tweaking crates.io crate tox_core 0.1.0
[INFO] tweaked toml for crates.io crate tox_core 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0644bfec648608de9669b5c7af1ac6bc9bd18ce26eee2a9261a96589aa6dab20
[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" "0644bfec648608de9669b5c7af1ac6bc9bd18ce26eee2a9261a96589aa6dab20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0644bfec648608de9669b5c7af1ac6bc9bd18ce26eee2a9261a96589aa6dab20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0644bfec648608de9669b5c7af1ac6bc9bd18ce26eee2a9261a96589aa6dab20", kill_on_drop: false }`
[INFO] [stdout] 0644bfec648608de9669b5c7af1ac6bc9bd18ce26eee2a9261a96589aa6dab20
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c2446564145b962da61cf31a0b5264bd8483739b588f753783a7e330fcaf5886
[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" "c2446564145b962da61cf31a0b5264bd8483739b588f753783a7e330fcaf5886", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]     Checking futures-core v0.3.8
[INFO] [stderr]     Checking gimli v0.23.0
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling proc-macro-nested v0.1.6
[INFO] [stderr]     Checking object v0.22.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking rustc-demangle v0.1.18
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking cookie-factory v0.3.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking ahash v0.4.6
[INFO] [stderr]     Checking c_linked_list v1.1.1
[INFO] [stderr]     Checking futures-channel v0.3.8
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]     Checking lexical-core v0.7.4
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking lru v0.6.1
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.35
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking get_if_addrs v0.5.3
[INFO] [stderr]    Compiling syn v1.0.50
[INFO] [stderr]    Compiling libsodium-sys v0.2.6
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking addr2line v0.14.0
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking backtrace v0.3.55
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling pin-project-internal v1.0.2
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]    Compiling futures-macro v0.3.8
[INFO] [stderr]     Checking tokio v0.2.23
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking pin-project v1.0.2
[INFO] [stderr]     Checking futures-util v0.3.8
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking futures v0.3.8
[INFO] [stderr]     Checking sodiumoxide v0.2.6
[INFO] [stderr]     Checking tox_binary_io v0.1.0
[INFO] [stderr]     Checking tox_crypto v0.1.0
[INFO] [stderr]     Checking tox_packet v0.1.0
[INFO] [stderr]     Checking tox_core v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `res`
[INFO] [stdout]    --> src/dht/server_ext.rs:162:13
[INFO] [stdout]     |
[INFO] [stdout] 162 |             res = server_future.fuse() => (),
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_res`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 49s
[INFO] running `Command { std: "docker" "inspect" "c2446564145b962da61cf31a0b5264bd8483739b588f753783a7e330fcaf5886", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2446564145b962da61cf31a0b5264bd8483739b588f753783a7e330fcaf5886", kill_on_drop: false }`
[INFO] [stdout] c2446564145b962da61cf31a0b5264bd8483739b588f753783a7e330fcaf5886