[INFO] fetching crate feed 2.1.0...
[INFO] checking feed-2.1.0 against beta for pr-78714
[INFO] extracting crate feed 2.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate feed 2.1.0 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 feed 2.1.0
[INFO] finished tweaking crates.io crate feed 2.1.0
[INFO] tweaked toml for crates.io crate feed 2.1.0 written to /workspace/builds/worker-6/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] 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" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] db62f0d5944fa3c204266537c4eb8cfa3abb568813564f695acbccfcf9bfecbb
[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" "db62f0d5944fa3c204266537c4eb8cfa3abb568813564f695acbccfcf9bfecbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "db62f0d5944fa3c204266537c4eb8cfa3abb568813564f695acbccfcf9bfecbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db62f0d5944fa3c204266537c4eb8cfa3abb568813564f695acbccfcf9bfecbb", kill_on_drop: false }`
[INFO] [stdout] db62f0d5944fa3c204266537c4eb8cfa3abb568813564f695acbccfcf9bfecbb
[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" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] b4ee6117506218da61384dc26abe03189dd8a61907ce38d8f3f3e9c6cd1b723e
[INFO] running `Command { std: "docker" "start" "-a" "b4ee6117506218da61384dc26abe03189dd8a61907ce38d8f3f3e9c6cd1b723e", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling curl v0.4.34
[INFO] [stderr]     Checking openssl-probe v0.1.2
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]    Compiling libz-sys v1.1.2
[INFO] [stderr]    Compiling openssl-sys v0.9.58
[INFO] [stderr]    Compiling curl-sys v0.4.38+curl-7.73.0
[INFO] [stderr]     Checking quick-xml v0.4.2
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking rss v0.4.0
[INFO] [stderr]     Checking socket2 v0.3.16
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking chrono v0.3.0
[INFO] [stderr]     Checking feed v2.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 26.82s
[INFO] running `Command { std: "docker" "inspect" "b4ee6117506218da61384dc26abe03189dd8a61907ce38d8f3f3e9c6cd1b723e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4ee6117506218da61384dc26abe03189dd8a61907ce38d8f3f3e9c6cd1b723e", kill_on_drop: false }`
[INFO] [stdout] b4ee6117506218da61384dc26abe03189dd8a61907ce38d8f3f3e9c6cd1b723e