[INFO] crate rmp 0.8.9 is already in cache
[INFO] checking rmp-0.8.9 against master#c724b67e1b474262917a5154d74e7072267593fe for pr-74315
[INFO] extracting crate rmp 0.8.9 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate rmp 0.8.9 on toolchain c724b67e1b474262917a5154d74e7072267593fe
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rmp 0.8.9
[INFO] finished tweaking crates.io crate rmp 0.8.9
[INFO] tweaked toml for crates.io crate rmp 0.8.9 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+c724b67e1b474262917a5154d74e7072267593fe" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 046c8560e10a3b1a2e2e46cc23650836082b08be84e0a1a0068cc51f14b5f3ad
[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" "046c8560e10a3b1a2e2e46cc23650836082b08be84e0a1a0068cc51f14b5f3ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "046c8560e10a3b1a2e2e46cc23650836082b08be84e0a1a0068cc51f14b5f3ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "046c8560e10a3b1a2e2e46cc23650836082b08be84e0a1a0068cc51f14b5f3ad", kill_on_drop: false }`
[INFO] [stdout] 046c8560e10a3b1a2e2e46cc23650836082b08be84e0a1a0068cc51f14b5f3ad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+c724b67e1b474262917a5154d74e7072267593fe" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9b65cea8907aa8f01c9f8f21dfe1887b9cba2554e292903304f14156a1c7a7e5
[INFO] running `Command { std: "docker" "start" "-a" "9b65cea8907aa8f01c9f8f21dfe1887b9cba2554e292903304f14156a1c7a7e5", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking rmp v0.8.9 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated item 'decode::str::read_str_ref': useless, use `read_str_from_slice` instead
[INFO] [stdout]   --> src/decode/mod.rs:21:66
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub use self::str::{read_str_len, read_str, read_str_from_slice, read_str_ref, DecodeStringError};
[INFO] [stdout]    |                                                                  ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/marker.rs:89:13
[INFO] [stdout]    |
[INFO] [stdout] 89 |             _ => unreachable!(),
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking aho-corasick v0.7.13
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking quickcheck v0.9.2
[INFO] [stdout] warning: use of deprecated item 'decode::str::read_str_ref': useless, use `read_str_from_slice` instead
[INFO] [stdout]   --> src/decode/mod.rs:21:66
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub use self::str::{read_str_len, read_str, read_str_from_slice, read_str_ref, DecodeStringError};
[INFO] [stdout]    |                                                                  ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/marker.rs:89:13
[INFO] [stdout]    |
[INFO] [stdout] 89 |             _ => unreachable!(),
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.60s
[INFO] running `Command { std: "docker" "inspect" "9b65cea8907aa8f01c9f8f21dfe1887b9cba2554e292903304f14156a1c7a7e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b65cea8907aa8f01c9f8f21dfe1887b9cba2554e292903304f14156a1c7a7e5", kill_on_drop: false }`
[INFO] [stdout] 9b65cea8907aa8f01c9f8f21dfe1887b9cba2554e292903304f14156a1c7a7e5