[INFO] fetching crate frugalos_mds 1.2.0...
[INFO] checking frugalos_mds-1.2.0 against master#43a4909ee98ed4d006d9d773f5d94dc58e34f846 for pr-157576
[INFO] extracting crate frugalos_mds 1.2.0 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate frugalos_mds 1.2.0
[INFO] finished tweaking crates.io crate frugalos_mds 1.2.0
[INFO] tweaked toml for crates.io crate frugalos_mds 1.2.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate frugalos_mds 1.2.0 on toolchain 43a4909ee98ed4d006d9d773f5d94dc58e34f846
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+43a4909ee98ed4d006d9d773f5d94dc58e34f846" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+43a4909ee98ed4d006d9d773f5d94dc58e34f846" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 103 packages to latest compatible versions
[INFO] [stderr]       Adding bytecodec v0.4.15 (available: v0.5.0)
[INFO] [stderr]       Adding futures v0.1.31 (available: v0.3.32)
[INFO] [stderr]       Adding patricia_tree v0.1.10 (available: v0.10.1)
[INFO] [stderr]       Adding rand v0.5.6 (available: v0.10.1)
[INFO] [stderr]       Adding rustracing v0.1.11 (available: v0.6.0)
[INFO] [stderr]       Adding rustracing_jaeger v0.1.12 (available: v0.10.0)
[INFO] [stderr]       Adding trackable v0.2.24 (available: v1.3.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+43a4909ee98ed4d006d9d773f5d94dc58e34f846" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustracing v0.1.11
[INFO] [stderr]   Downloaded prometrics v0.1.13
[INFO] [stderr]   Downloaded procinfo v0.4.2
[INFO] [stderr]   Downloaded fibers_tasque v0.1.2
[INFO] [stderr]   Downloaded rustracing_jaeger v0.1.12
[INFO] [stderr]   Downloaded raftlog v0.6.0
[INFO] [stderr]   Downloaded tasque v0.1.5
[INFO] [stderr]   Downloaded nbchan v0.1.3
[INFO] [stderr]   Downloaded atomic_immut v0.1.4
[INFO] [stderr]   Downloaded factory v0.1.2
[INFO] [stderr]   Downloaded protobuf_codec v0.2.8
[INFO] [stderr]   Downloaded raftlog_protobuf v0.3.0
[INFO] [stderr]   Downloaded fibers_global v0.1.2
[INFO] [stderr]   Downloaded fibers_rpc v0.3.4
[INFO] [stderr]   Downloaded libfrugalos v0.7.0
[INFO] [stderr]   Downloaded splay_tree v0.2.10
[INFO] [stderr]   Downloaded frugalos_raft v1.2.0
[INFO] [stderr]   Downloaded fibers v0.1.13
[INFO] [stderr]   Downloaded frugalos_core v1.2.0
[INFO] [stderr]   Downloaded nom v2.2.1
[INFO] [stderr]   Downloaded cannyls v0.10.0
[INFO] [stderr]   Downloaded patricia_tree v0.1.10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3e793bdf10248eb2ddbd6b0faebed8155c11b4589982e2893733958d93e8d540" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 37cd0679938ae76480e6c0db5f8dbec52ce0b15834f4d137199d6308253b3137
[INFO] running `Command { std: "docker" "start" "37cd0679938ae76480e6c0db5f8dbec52ce0b15834f4d137199d6308253b3137", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "37cd0679938ae76480e6c0db5f8dbec52ce0b15834f4d137199d6308253b3137" "/opt/rustwide/cargo-home/bin/cargo" "+43a4909ee98ed4d006d9d773f5d94dc58e34f846" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "37cd0679938ae76480e6c0db5f8dbec52ce0b15834f4d137199d6308253b3137", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "37cd0679938ae76480e6c0db5f8dbec52ce0b15834f4d137199d6308253b3137" "/opt/rustwide/cargo-home/bin/cargo" "+43a4909ee98ed4d006d9d773f5d94dc58e34f846" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking nom v2.2.1
[INFO] [stderr]     Checking atomic_immut v0.1.4
[INFO] [stderr]     Checking num_cpus v1.17.0
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling procinfo v0.4.2
[INFO] [stderr]     Checking splay_tree v0.2.10
[INFO] [stderr]     Checking nbchan v0.1.3
[INFO] [stderr]    Compiling slog v2.8.2
[INFO] [stderr]     Checking memchr v2.8.2
[INFO] [stderr]     Checking factory v0.1.2
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking hostname v0.1.5
[INFO] [stderr]     Checking object v0.37.3
[INFO] [stderr]    Compiling syn v2.0.118
[INFO] [stderr]     Checking fibers v0.1.13
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking erased-serde v0.3.31
[INFO] [stderr]     Checking serde_yaml v0.8.26
[INFO] [stderr]     Checking fibers_global v0.1.2
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling trackable_derive v1.0.0
[INFO] [stderr]     Checking trackable v1.3.0
[INFO] [stderr]     Checking backtrace v0.3.76
[INFO] [stderr]     Checking trackable v0.2.24
[INFO] [stderr]     Checking prometrics v0.1.13
[INFO] [stderr]     Checking bytecodec v0.4.15
[INFO] [stderr]     Checking thrift_codec v0.1.1
[INFO] [stderr]     Checking rustracing v0.1.11
[INFO] [stderr]     Checking rustracing_jaeger v0.1.12
[INFO] [stderr]     Checking tasque v0.1.5
[INFO] [stderr]     Checking raftlog v0.6.0
[INFO] [stderr]     Checking cannyls v0.10.0
[INFO] [stderr]     Checking fibers_tasque v0.1.2
[INFO] [stderr]     Checking frugalos_core v1.2.0
[INFO] [stderr]     Checking protobuf_codec v0.2.8
[INFO] [stderr]     Checking fibers_rpc v0.3.4
[INFO] [stderr]     Checking patricia_tree v0.1.10
[INFO] [stderr]     Checking libfrugalos v0.7.0
[INFO] [stderr]     Checking raftlog_protobuf v0.3.0
[INFO] [stderr]     Checking frugalos_raft v1.2.0
[INFO] [stderr]     Checking frugalos_mds v1.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `3` is never read
[INFO] [stdout]   --> src/node/mod.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |     DeleteByPrefix(
[INFO] [stdout]    |     -------------- field in this variant
[INFO] [stdout] ...
[INFO] [stdout] 49 |         ObjectPrefix,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Proposal` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 49 -         ObjectPrefix,
[INFO] [stdout] 49 +         (),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `3` is never read
[INFO] [stdout]   --> src/node/mod.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |     DeleteByPrefix(
[INFO] [stdout]    |     -------------- field in this variant
[INFO] [stdout] ...
[INFO] [stdout] 49 |         ObjectPrefix,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Proposal` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 49 -         ObjectPrefix,
[INFO] [stdout] 49 +         (),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.75s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v2.2.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 9`
[INFO] running `Command { std: "docker" "inspect" "37cd0679938ae76480e6c0db5f8dbec52ce0b15834f4d137199d6308253b3137", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37cd0679938ae76480e6c0db5f8dbec52ce0b15834f4d137199d6308253b3137", kill_on_drop: false }`
[INFO] [stdout] 37cd0679938ae76480e6c0db5f8dbec52ce0b15834f4d137199d6308253b3137
