[INFO] fetching crate slack 0.25.0...
[INFO] checking slack-0.25.0 against beta for pr-78714
[INFO] extracting crate slack 0.25.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate slack 0.25.0 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 slack 0.25.0
[INFO] finished tweaking crates.io crate slack 0.25.0
[INFO] tweaked toml for crates.io crate slack 0.25.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate slack 0.25.0 already has a lockfile, it will not be regenerated
[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] [stderr]     Blocking waiting for file lock on package cache
[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" "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] d740edc19531aeb7a6dd7524cf4b73f14a734a71ac0f6a9da3be1b8544ea9e9e
[INFO] running `Command { std: "docker" "start" "-a" "d740edc19531aeb7a6dd7524cf4b73f14a734a71ac0f6a9da3be1b8544ea9e9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d740edc19531aeb7a6dd7524cf4b73f14a734a71ac0f6a9da3be1b8544ea9e9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d740edc19531aeb7a6dd7524cf4b73f14a734a71ac0f6a9da3be1b8544ea9e9e", kill_on_drop: false }`
[INFO] [stdout] d740edc19531aeb7a6dd7524cf4b73f14a734a71ac0f6a9da3be1b8544ea9e9e
[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" "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] fef6727bd66545c524e76f58b2c32d383db82fdf401189890bcac122bf2e5365
[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" "fef6727bd66545c524e76f58b2c32d383db82fdf401189890bcac122bf2e5365", kill_on_drop: false }`
[INFO] [stderr]    Compiling slack v0.25.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling indexmap v1.5.1
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]     Checking tokio v0.2.22
[INFO] [stderr]     Checking async-compression v0.3.5
[INFO] [stderr]     Checking serde_json v1.0.57
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]     Checking http v0.1.21
[INFO] [stderr]     Checking input_buffer v0.2.0
[INFO] [stderr]     Checking tungstenite v0.9.2
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking tokio-tls v0.3.1
[INFO] [stderr]    Compiling pin-project-internal v0.4.23
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]     Checking pin-project v0.4.23
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking h2 v0.2.6
[INFO] [stderr]     Checking hyper v0.13.7
[INFO] [stderr]     Checking hyper-tls v0.4.3
[INFO] [stderr]     Checking reqwest v0.10.8
[INFO] [stderr]     Checking slack_api v0.23.1
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 11s
[INFO] running `Command { std: "docker" "inspect" "fef6727bd66545c524e76f58b2c32d383db82fdf401189890bcac122bf2e5365", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fef6727bd66545c524e76f58b2c32d383db82fdf401189890bcac122bf2e5365", kill_on_drop: false }`
[INFO] [stdout] fef6727bd66545c524e76f58b2c32d383db82fdf401189890bcac122bf2e5365