[INFO] cloning repository https://github.com/rust-lang-nursery/polonius
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rust-lang-nursery/polonius" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-lang-nursery%2Fpolonius", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-lang-nursery%2Fpolonius'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f2c0fcafdcd341486f7c2225824b26feb0d6b9ce
[INFO] checking rust-lang-nursery/polonius against master#4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5 for pr-81174
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-lang-nursery%2Fpolonius" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rust-lang-nursery/polonius on toolchain 4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rust-lang-nursery/polonius
[INFO] finished tweaking git repo https://github.com/rust-lang-nursery/polonius
[INFO] tweaked toml for git repo https://github.com/rust-lang-nursery/polonius written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/rust-lang-nursery/polonius already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eca1c55c1c8d8321788c4aadb806083aa3de373be0e304bad284e78b0d5faca2
[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" "eca1c55c1c8d8321788c4aadb806083aa3de373be0e304bad284e78b0d5faca2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eca1c55c1c8d8321788c4aadb806083aa3de373be0e304bad284e78b0d5faca2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eca1c55c1c8d8321788c4aadb806083aa3de373be0e304bad284e78b0d5faca2", kill_on_drop: false }`
[INFO] [stdout] eca1c55c1c8d8321788c4aadb806083aa3de373be0e304bad284e78b0d5faca2
[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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f56e1f2c742fa09175136b7e052dbe1f689defaeb1aaa2c4442a2c6c7816aa0a
[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" "f56e1f2c742fa09175136b7e052dbe1f689defaeb1aaa2c4442a2c6c7816aa0a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling proc-macro2 v0.4.24
[INFO] [stderr]    Compiling rand_core v0.3.0
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]    Compiling byte-tools v0.3.0
[INFO] [stderr]    Compiling opaque-debug v0.2.1
[INFO] [stderr]    Compiling fake-simd v0.1.2
[INFO] [stderr]    Compiling lalrpop-util v0.17.2
[INFO] [stderr]     Checking datafrog v2.0.1
[INFO] [stderr]     Checking pico-args v0.2.0
[INFO] [stderr]     Checking diff v0.1.11
[INFO] [stderr]    Compiling memchr v2.1.1
[INFO] [stderr]    Compiling phf_shared v0.7.23
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling regex-syntax v0.6.4
[INFO] [stderr]    Compiling itertools v0.8.0
[INFO] [stderr]     Checking rustc-hash v1.0.1
[INFO] [stderr]     Checking petgraph v0.4.13
[INFO] [stderr]    Compiling serde v1.0.80
[INFO] [stderr]    Compiling block-padding v0.1.2
[INFO] [stderr]    Compiling ena v0.13.1
[INFO] [stderr]    Compiling rand_core v0.2.2
[INFO] [stderr]     Checking polonius-engine v0.12.1 (/opt/rustwide/workdir/polonius-engine)
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]    Compiling rand v0.5.5
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling syn v0.15.22
[INFO] [stderr]    Compiling term v0.5.2
[INFO] [stderr]    Compiling generic-array v0.12.0
[INFO] [stderr]     Checking polonius v0.7.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking aho-corasick v0.6.9
[INFO] [stderr]    Compiling digest v0.8.0
[INFO] [stderr]    Compiling block-buffer v0.7.0
[INFO] [stderr]    Compiling sha2 v0.8.0
[INFO] [stderr]    Compiling ascii-canvas v2.0.0
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling phf_generator v0.7.23
[INFO] [stderr]    Compiling string_cache_codegen v0.4.2
[INFO] [stderr]    Compiling string_cache v0.7.3
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]    Compiling docopt v1.0.2
[INFO] [stderr]    Compiling lalrpop v0.17.2
[INFO] [stderr]    Compiling polonius-parser v0.4.0 (/opt/rustwide/workdir/polonius-parser)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 10s
[INFO] running `Command { std: "docker" "inspect" "f56e1f2c742fa09175136b7e052dbe1f689defaeb1aaa2c4442a2c6c7816aa0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f56e1f2c742fa09175136b7e052dbe1f689defaeb1aaa2c4442a2c6c7816aa0a", kill_on_drop: false }`
[INFO] [stdout] f56e1f2c742fa09175136b7e052dbe1f689defaeb1aaa2c4442a2c6c7816aa0a