[INFO] fetching crate xxd-rs 0.2.5...
[INFO] checking xxd-rs-0.2.5 against beta for pr-78714
[INFO] extracting crate xxd-rs 0.2.5 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate xxd-rs 0.2.5 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 xxd-rs 0.2.5
[INFO] finished tweaking crates.io crate xxd-rs 0.2.5
[INFO] tweaked toml for crates.io crate xxd-rs 0.2.5 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate xxd-rs 0.2.5 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] 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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/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] 3627a4e190d2b498a43f900ec578e411a4318354faa0b9fe766f8a102cb3d2ea
[INFO] running `Command { std: "docker" "start" "-a" "3627a4e190d2b498a43f900ec578e411a4318354faa0b9fe766f8a102cb3d2ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3627a4e190d2b498a43f900ec578e411a4318354faa0b9fe766f8a102cb3d2ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3627a4e190d2b498a43f900ec578e411a4318354faa0b9fe766f8a102cb3d2ea", kill_on_drop: false }`
[INFO] [stdout] 3627a4e190d2b498a43f900ec578e411a4318354faa0b9fe766f8a102cb3d2ea
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b2557fe0294ef601c69c1aa431582deca1e849c8278522af71e8c09c8481f412
[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" "b2557fe0294ef601c69c1aa431582deca1e849c8278522af71e8c09c8481f412", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.50
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.29
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling cc v1.0.31
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]     Checking cfg-if v0.1.7
[INFO] [stderr]    Compiling serde v1.0.89
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]    Compiling regex v1.1.2
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling strsim v0.6.0
[INFO] [stderr]     Checking rustc-demangle v0.1.4
[INFO] [stderr]    Compiling unicode-width v0.1.4
[INFO] [stderr]    Compiling bitflags v0.7.0
[INFO] [stderr]    Compiling unicode-segmentation v1.1.0
[INFO] [stderr]    Compiling ansi_term v0.9.0
[INFO] [stderr]    Compiling vec_map v0.6.0
[INFO] [stderr]     Checking utf8-ranges v1.0.2
[INFO] [stderr]     Checking remove_dir_all v0.5.1
[INFO] [stderr]    Compiling anyhow v1.0.32
[INFO] [stderr]     Checking termcolor v0.3.6
[INFO] [stderr]     Checking nom v3.0.0
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking regex-syntax v0.6.5
[INFO] [stderr]    Compiling backtrace v0.3.14
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]    Compiling term_size v0.2.3
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]    Compiling clap v2.20.5
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking uuid v0.6.5
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking os_type v2.2.0
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling serde_derive v1.0.89
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]    Compiling xxd-rs v0.2.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking human-panic v1.0.1
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 05s
[INFO] running `Command { std: "docker" "inspect" "b2557fe0294ef601c69c1aa431582deca1e849c8278522af71e8c09c8481f412", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2557fe0294ef601c69c1aa431582deca1e849c8278522af71e8c09c8481f412", kill_on_drop: false }`
[INFO] [stdout] b2557fe0294ef601c69c1aa431582deca1e849c8278522af71e8c09c8481f412