[INFO] fetching crate memcached-rs 0.4.2...
[INFO] checking memcached-rs-0.4.2 against try#b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b for pr-82781
[INFO] extracting crate memcached-rs 0.4.2 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate memcached-rs 0.4.2 on toolchain b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate memcached-rs 0.4.2
[INFO] finished tweaking crates.io crate memcached-rs 0.4.2
[INFO] tweaked toml for crates.io crate memcached-rs 0.4.2 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate memcached-rs 0.4.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded winapi-util v0.1.1
[INFO] [stderr]   Downloaded wincolor v1.0.1
[INFO] [stderr]   Downloaded aho-corasick v0.6.9
[INFO] [stderr]   Downloaded utf8-ranges v1.0.2
[INFO] [stderr]   Downloaded atty v0.2.11
[INFO] [stderr]   Downloaded regex v1.0.6
[INFO] [stderr]   Downloaded unix_socket v0.5.0
[INFO] [stderr]   Downloaded ucd-util v0.1.2
[INFO] [stderr]   Downloaded termion v1.5.1
[INFO] [stderr]   Downloaded regex-syntax v0.6.3
[INFO] [stderr]   Downloaded byteorder v1.2.7
[INFO] [stderr]   Downloaded winapi v0.3.6
[INFO] [stderr]   Downloaded termcolor v1.0.4
[INFO] [stderr]   Downloaded cfg-if v0.1.6
[INFO] [stderr]   Downloaded lazy_static v1.2.0
[INFO] [stderr]   Downloaded conhash v0.4.0
[INFO] [stderr]   Downloaded memchr v2.1.1
[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" "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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 38f672b105d8419a9bd6ea1479ba8d1fe4305be78af4cb162d40756466d970b1
[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" "38f672b105d8419a9bd6ea1479ba8d1fe4305be78af4cb162d40756466d970b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "38f672b105d8419a9bd6ea1479ba8d1fe4305be78af4cb162d40756466d970b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38f672b105d8419a9bd6ea1479ba8d1fe4305be78af4cb162d40756466d970b1", kill_on_drop: false }`
[INFO] [stdout] 38f672b105d8419a9bd6ea1479ba8d1fe4305be78af4cb162d40756466d970b1
[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" "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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3a6395b239ed27fcd6f5a589af8d45f20f5900e2b09a98063afb59e2e2dc354e
[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" "3a6395b239ed27fcd6f5a589af8d45f20f5900e2b09a98063afb59e2e2dc354e", 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]     Checking cfg-if v0.1.6
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking lazy_static v1.2.0
[INFO] [stderr]    Compiling regex v1.0.6
[INFO] [stderr]     Checking ucd-util v0.1.2
[INFO] [stderr]     Checking utf8-ranges v1.0.2
[INFO] [stderr]     Checking semver-parser v0.7.0
[INFO] [stderr]     Checking termcolor v1.0.4
[INFO] [stderr]     Checking byteorder v1.2.7
[INFO] [stderr]    Compiling memchr v2.1.1
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking regex-syntax v0.6.3
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking semver v0.9.0
[INFO] [stderr]     Checking conhash v0.4.0
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking unix_socket v0.5.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking aho-corasick v0.6.9
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking memcached-rs v0.4.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.29s
[INFO] running `Command { std: "docker" "inspect" "3a6395b239ed27fcd6f5a589af8d45f20f5900e2b09a98063afb59e2e2dc354e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a6395b239ed27fcd6f5a589af8d45f20f5900e2b09a98063afb59e2e2dc354e", kill_on_drop: false }`
[INFO] [stdout] 3a6395b239ed27fcd6f5a589af8d45f20f5900e2b09a98063afb59e2e2dc354e