[INFO] cloning repository https://github.com/JacobPuff/FiddlingWithSoftPot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JacobPuff/FiddlingWithSoftPot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJacobPuff%2FFiddlingWithSoftPot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJacobPuff%2FFiddlingWithSoftPot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f027e735030df84d48b44809f718afbc91d5a8aa
[INFO] checking JacobPuff/FiddlingWithSoftPot against master#d62d3f7fa9a91d933213cc10e20e740608983f64 for pr-77015
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJacobPuff%2FFiddlingWithSoftPot" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JacobPuff/FiddlingWithSoftPot on toolchain d62d3f7fa9a91d933213cc10e20e740608983f64
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/JacobPuff/FiddlingWithSoftPot
[INFO] finished tweaking git repo https://github.com/JacobPuff/FiddlingWithSoftPot
[INFO] tweaked toml for git repo https://github.com/JacobPuff/FiddlingWithSoftPot written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/JacobPuff/FiddlingWithSoftPot already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9d2a13da2ef507f0932e0258a002685f8bb3bce266d22bc98f7161b1b6a80421
[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" "9d2a13da2ef507f0932e0258a002685f8bb3bce266d22bc98f7161b1b6a80421", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9d2a13da2ef507f0932e0258a002685f8bb3bce266d22bc98f7161b1b6a80421", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d2a13da2ef507f0932e0258a002685f8bb3bce266d22bc98f7161b1b6a80421", kill_on_drop: false }`
[INFO] [stdout] 9d2a13da2ef507f0932e0258a002685f8bb3bce266d22bc98f7161b1b6a80421
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3e7d5fe986f42f1b4d1584eabf6026500d5f5e0a0b26f968fe7d563423c74dcd
[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" "3e7d5fe986f42f1b4d1584eabf6026500d5f5e0a0b26f968fe7d563423c74dcd", 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] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling pkg-config v0.3.17
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking sample v0.10.0
[INFO] [stderr]     Checking serial-core v0.4.0
[INFO] [stderr]     Checking ioctl-rs v0.1.6
[INFO] [stderr]     Checking termios v0.2.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]     Checking serial-unix v0.4.0
[INFO] [stderr]     Checking serial v0.4.0
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling alsa-sys v0.1.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]    Compiling cpal v0.11.0
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.15
[INFO] [stderr]     Checking thiserror v1.0.15
[INFO] [stderr]     Checking soft-pot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.21s
[INFO] running `Command { std: "docker" "inspect" "3e7d5fe986f42f1b4d1584eabf6026500d5f5e0a0b26f968fe7d563423c74dcd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e7d5fe986f42f1b4d1584eabf6026500d5f5e0a0b26f968fe7d563423c74dcd", kill_on_drop: false }`
[INFO] [stdout] 3e7d5fe986f42f1b4d1584eabf6026500d5f5e0a0b26f968fe7d563423c74dcd