[INFO] updating cached repository https://github.com/asonix/kv-testing
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7d3504523ec9b19e76b28dad67056eba5141e4db
[INFO] checking asonix/kv-testing against try#0ab79c4b48ad19260fa46623f452c1b403a360e8 for pr-74315
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fasonix%2Fkv-testing" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/asonix/kv-testing on toolchain 0ab79c4b48ad19260fa46623f452c1b403a360e8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/asonix/kv-testing
[INFO] finished tweaking git repo https://github.com/asonix/kv-testing
[INFO] tweaked toml for git repo https://github.com/asonix/kv-testing written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/asonix/kv-testing already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fab846e6f00efdbd086e4062e045d7cc083217250426edc3579df356fdc2263d
[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" "fab846e6f00efdbd086e4062e045d7cc083217250426edc3579df356fdc2263d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fab846e6f00efdbd086e4062e045d7cc083217250426edc3579df356fdc2263d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fab846e6f00efdbd086e4062e045d7cc083217250426edc3579df356fdc2263d", kill_on_drop: false }`
[INFO] [stdout] fab846e6f00efdbd086e4062e045d7cc083217250426edc3579df356fdc2263d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ec4522fa79d002581f683bfbfee9977c8375f6c23c9aa3ca2275fa07d8a4a18e
[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" "ec4522fa79d002581f683bfbfee9977c8375f6c23c9aa3ca2275fa07d8a4a18e", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.10
[INFO] [stderr]     Checking num-traits v0.2.2
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking cfg-if v0.1.2
[INFO] [stderr]    Compiling pkg-config v0.3.9
[INFO] [stderr]     Checking byteorder v1.2.2
[INFO] [stderr]     Checking rustc-demangle v0.1.7
[INFO] [stderr]     Checking lazy_static v1.0.0
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking atty v0.2.8
[INFO] [stderr]     Checking toml v0.4.6
[INFO] [stderr]     Checking regex-syntax v0.5.5
[INFO] [stderr]    Compiling regex v0.2.10
[INFO] [stderr]     Checking humantime v1.1.1
[INFO] [stderr]     Checking log v0.4.1
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]    Compiling proc-macro2 v0.3.6
[INFO] [stderr]     Checking aho-corasick v0.6.4
[INFO] [stderr]     Checking bincode v1.0.0
[INFO] [stderr]     Checking serde_cbor v0.8.2
[INFO] [stderr]    Compiling quote v0.5.1
[INFO] [stderr]    Compiling syn v0.13.1
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking serde_json v1.0.14
[INFO] [stderr]     Checking rmp v0.8.7
[INFO] [stderr]     Checking serde_yaml v0.7.3
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]    Compiling lmdb-sys v0.8.0
[INFO] [stderr]     Checking rmp-serde v0.13.7
[INFO] [stderr]    Compiling serde_derive_internals v0.23.1
[INFO] [stderr]     Checking env_logger v0.5.7
[INFO] [stderr]    Compiling serde_derive v1.0.38
[INFO] [stderr]     Checking lmdb v0.8.0
[INFO] [stderr]     Checking backtrace v0.3.6
[INFO] [stderr]     Checking failure v0.1.1
[INFO] [stderr]     Checking kv v0.6.0
[INFO] [stderr]     Checking kv-test v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.52s
[INFO] running `Command { std: "docker" "inspect" "ec4522fa79d002581f683bfbfee9977c8375f6c23c9aa3ca2275fa07d8a4a18e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec4522fa79d002581f683bfbfee9977c8375f6c23c9aa3ca2275fa07d8a4a18e", kill_on_drop: false }`
[INFO] [stdout] ec4522fa79d002581f683bfbfee9977c8375f6c23c9aa3ca2275fa07d8a4a18e