[INFO] fetching crate packet 0.1.3...
[INFO] checking packet-0.1.3 against beta for pr-78714
[INFO] extracting crate packet 0.1.3 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate packet 0.1.3 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate packet 0.1.3
[INFO] finished tweaking crates.io crate packet 0.1.3
[INFO] tweaked toml for crates.io crate packet 0.1.3 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+beta" "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] a92c13d248ccbee1ff1f18eac322baa4dc5a6dde83462e52127624836bef9b19
[INFO] running `Command { std: "docker" "start" "-a" "a92c13d248ccbee1ff1f18eac322baa4dc5a6dde83462e52127624836bef9b19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a92c13d248ccbee1ff1f18eac322baa4dc5a6dde83462e52127624836bef9b19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a92c13d248ccbee1ff1f18eac322baa4dc5a6dde83462e52127624836bef9b19", kill_on_drop: false }`
[INFO] [stdout] a92c13d248ccbee1ff1f18eac322baa4dc5a6dde83462e52127624836bef9b19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1589e7b6553d0112da7a2bd27b54d9cf63c5891d1a6ff94929bef2cffd6cd4df
[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" "1589e7b6553d0112da7a2bd27b54d9cf63c5891d1a6ff94929bef2cffd6cd4df", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-core v0.3.8
[INFO] [stderr]    Compiling futures-io v0.3.8
[INFO] [stderr]    Compiling once_cell v1.5.2
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling futures-sink v0.3.8
[INFO] [stderr]    Compiling cache-padded v1.1.1
[INFO] [stderr]    Compiling fastrand v1.4.0
[INFO] [stderr]    Compiling parking v2.0.0
[INFO] [stderr]    Compiling try-lock v0.2.3
[INFO] [stderr]    Compiling waker-fn v1.1.0
[INFO] [stderr]    Compiling event-listener v2.5.1
[INFO] [stderr]    Compiling atomic-waker v1.0.0
[INFO] [stderr]    Compiling tower-service v0.3.0
[INFO] [stderr]    Compiling httpdate v0.3.2
[INFO] [stderr]    Compiling parking v1.0.6
[INFO] [stderr]    Compiling scoped-tls v1.0.0
[INFO] [stderr]    Compiling async-task v3.0.0
[INFO] [stderr]    Compiling mime v0.3.16
[INFO] [stderr]    Compiling ipnet v2.3.0
[INFO] [stderr]    Compiling tracing-core v0.1.17
[INFO] [stderr]    Compiling http v0.2.1
[INFO] [stderr]    Compiling form_urlencoded v1.0.0
[INFO] [stderr]    Compiling concurrent-queue v1.2.2
[INFO] [stderr]    Compiling futures-channel v0.3.8
[INFO] [stderr]    Compiling encoding_rs v0.8.26
[INFO] [stderr]     Checking phf v0.8.0
[INFO] [stderr]    Compiling net2 v0.2.35
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling socket2 v0.3.16
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling idna v0.2.0
[INFO] [stderr]    Compiling futures-task v0.3.8
[INFO] [stderr]    Compiling futures-lite v0.1.11
[INFO] [stderr]    Compiling async-channel v1.5.1
[INFO] [stderr]    Compiling openssl v0.10.30
[INFO] [stderr]    Compiling smol-potat-derive v0.1.0
[INFO] [stderr]    Compiling pin-project v1.0.1
[INFO] [stderr]    Compiling pin-project v0.4.27
[INFO] [stderr]    Compiling mime_guess v2.0.3
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]    Compiling tracing v0.1.21
[INFO] [stderr]    Compiling futures-util v0.3.8
[INFO] [stderr]    Compiling mio v0.6.22
[INFO] [stderr]    Compiling phf_codegen v0.8.0
[INFO] [stderr]    Compiling tracing-futures v0.2.4
[INFO] [stderr]    Compiling blocking v0.4.7
[INFO] [stderr]    Compiling tokio v0.2.22
[INFO] [stderr]    Compiling url v2.2.0
[INFO] [stderr]    Compiling serde_urlencoded v0.6.1
[INFO] [stderr]    Compiling http-body v0.3.1
[INFO] [stderr]    Compiling native-tls v0.2.6
[INFO] [stderr]    Compiling smol v0.1.18
[INFO] [stderr]    Compiling smol-potat v0.3.3
[INFO] [stderr]    Compiling tokio-util v0.3.1
[INFO] [stderr]    Compiling tokio-tls v0.3.1
[INFO] [stderr]    Compiling h2 v0.2.7
[INFO] [stderr]    Compiling hyper v0.13.9
[INFO] [stderr]    Compiling hyper-tls v0.4.3
[INFO] [stderr]    Compiling reqwest v0.10.8
[INFO] [stderr]    Compiling hwaddr v0.1.6
[INFO] [stderr]     Checking packet v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `ffi`
[INFO] [stdout]   --> src/error.rs:15:15
[INFO] [stdout]    |
[INFO] [stdout] 15 | use std::{io, ffi};
[INFO] [stdout]    |               ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ffi`
[INFO] [stdout]   --> src/error.rs:15:15
[INFO] [stdout]    |
[INFO] [stdout] 15 | use std::{io, ffi};
[INFO] [stdout]    |               ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `buffer`
[INFO] [stdout]   --> src/ip/v6/builder.rs:24:2
[INFO] [stdout]    |
[INFO] [stdout] 24 |     buffer:    B,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `buffer`
[INFO] [stdout]   --> src/ip/v6/builder.rs:24:2
[INFO] [stdout]    |
[INFO] [stdout] 24 |     buffer:    B,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 13s
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1589e7b6553d0112da7a2bd27b54d9cf63c5891d1a6ff94929bef2cffd6cd4df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1589e7b6553d0112da7a2bd27b54d9cf63c5891d1a6ff94929bef2cffd6cd4df", kill_on_drop: false }`
[INFO] [stdout] 1589e7b6553d0112da7a2bd27b54d9cf63c5891d1a6ff94929bef2cffd6cd4df