[INFO] cloning repository https://github.com/derekmorr/rust-rc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/derekmorr/rust-rc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fderekmorr%2Frust-rc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fderekmorr%2Frust-rc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 746e1be1e4c7a2c47a43fcc33d6c738f3b4ec165
[INFO] checking derekmorr/rust-rc against master#c919f490bbcd2b29b74016101f7ec71aaa24bdbb for pr-79073
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fderekmorr%2Frust-rc" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/derekmorr/rust-rc on toolchain c919f490bbcd2b29b74016101f7ec71aaa24bdbb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/derekmorr/rust-rc
[INFO] finished tweaking git repo https://github.com/derekmorr/rust-rc
[INFO] tweaked toml for git repo https://github.com/derekmorr/rust-rc written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/derekmorr/rust-rc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 581f97639238b2b62bb577405075fbdd86cb0325d6ece8e0d1401a3b401bbc6b
[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" "581f97639238b2b62bb577405075fbdd86cb0325d6ece8e0d1401a3b401bbc6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "581f97639238b2b62bb577405075fbdd86cb0325d6ece8e0d1401a3b401bbc6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "581f97639238b2b62bb577405075fbdd86cb0325d6ece8e0d1401a3b401bbc6b", kill_on_drop: false }`
[INFO] [stdout] 581f97639238b2b62bb577405075fbdd86cb0325d6ece8e0d1401a3b401bbc6b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2371f26cb10cf5858dbedfc66f17a51aa025ffc344d556b8e8db5421a8d213e2
[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" "2371f26cb10cf5858dbedfc66f17a51aa025ffc344d556b8e8db5421a8d213e2", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling serde v1.0.70
[INFO] [stderr]     Checking libc v0.2.42
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking ucd-util v0.1.1
[INFO] [stderr]    Compiling bv v0.7.4
[INFO] [stderr]    Compiling ndarray v0.9.1
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]     Checking utf8-ranges v1.0.0
[INFO] [stderr]     Checking bytecount v0.3.1
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]     Checking itertools v0.6.5
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking itertools-num v0.1.1
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking unreachable v0.1.1
[INFO] [stderr]    Compiling proc-macro2 v0.4.6
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]     Checking ordered-float v0.5.0
[INFO] [stderr]    Compiling newtype_derive v0.1.6
[INFO] [stderr]    Compiling quote v0.6.3
[INFO] [stderr]    Compiling syn v0.14.4
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking csv-core v0.1.4
[INFO] [stderr]     Checking aho-corasick v0.6.6
[INFO] [stderr]    Compiling serde_derive v1.0.70
[INFO] [stderr]     Checking multimap v0.4.0
[INFO] [stderr]     Checking csv v1.0.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking bio v0.21.0
[INFO] [stderr]     Checking rust-rc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 50.92s
[INFO] running `Command { std: "docker" "inspect" "2371f26cb10cf5858dbedfc66f17a51aa025ffc344d556b8e8db5421a8d213e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2371f26cb10cf5858dbedfc66f17a51aa025ffc344d556b8e8db5421a8d213e2", kill_on_drop: false }`
[INFO] [stdout] 2371f26cb10cf5858dbedfc66f17a51aa025ffc344d556b8e8db5421a8d213e2