[INFO] crate flowclib 0.8.8 is already in cache
[INFO] checking flowclib-0.8.8 against try#d7b51666469c792a8a3f40849607739bae1e705e for pr-71665
[INFO] extracting crate flowclib 0.8.8 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate flowclib 0.8.8 on toolchain d7b51666469c792a8a3f40849607739bae1e705e
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d7b51666469c792a8a3f40849607739bae1e705e" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate flowclib 0.8.8
[INFO] finished tweaking crates.io crate flowclib 0.8.8
[INFO] tweaked toml for crates.io crate flowclib 0.8.8 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d7b51666469c792a8a3f40849607739bae1e705e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d7b51666469c792a8a3f40849607739bae1e705e" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "/opt/rustwide/cargo-home/bin/cargo" "+d7b51666469c792a8a3f40849607739bae1e705e" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8db7c9db2a451b0e0eb0a839ec352934267adba34087bfa75192fec9b7b2d913
[INFO] running `"docker" "start" "-a" "8db7c9db2a451b0e0eb0a839ec352934267adba34087bfa75192fec9b7b2d913"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling serde v1.0.109
[INFO] [stderr]    Compiling proc-macro2 v1.0.12
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling cc v1.0.52
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling version_check v0.9.1
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking memory_units v0.3.0
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking linked-hash-map v0.5.3
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]     Checking smallvec v1.4.0
[INFO] [stderr]     Checking dtoa v0.4.5
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking strfmt v0.1.6
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking yaml-rust v0.4.3
[INFO] [stderr]     Checking unicode-normalization v0.1.12
[INFO] [stderr]    Compiling error-chain v0.12.2
[INFO] [stderr]     Checking parity-wasm v0.31.3
[INFO] [stderr]    Compiling backtrace-sys v0.1.37
[INFO] [stderr]    Compiling quote v1.0.4
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]    Compiling syn v1.0.19
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking instant v0.1.3
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking url v2.1.1
[INFO] [stderr]     Checking backtrace v0.3.46
[INFO] [stderr]     Checking wasmi-validation v0.1.0
[INFO] [stderr]     Checking wasmi v0.4.5
[INFO] [stderr]     Checking serde_json v1.0.53
[INFO] [stderr]     Checking multimap v0.5.0
[INFO] [stderr]     Checking erased-serde v0.3.11
[INFO] [stderr]     Checking serde_yaml v0.8.11
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]     Checking flow_impl v0.8.5
[INFO] [stderr]    Compiling serde_derive v1.0.109
[INFO] [stderr]    Compiling shrinkwraprs v0.2.3
[INFO] [stderr]     Checking flowrlib v0.8.8
[INFO] [stderr]     Checking flowclib v0.8.8 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]    --> src/model/flow.rs:320:9
[INFO] [stderr]     |
[INFO] [stderr] 320 |         replace(&mut self.connections, Some(connections));
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]    --> src/model/flow.rs:320:9
[INFO] [stderr]     |
[INFO] [stderr] 320 |         replace(&mut self.connections, Some(connections));
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 17s
[INFO] running `"docker" "inspect" "8db7c9db2a451b0e0eb0a839ec352934267adba34087bfa75192fec9b7b2d913"`
[INFO] running `"docker" "rm" "-f" "8db7c9db2a451b0e0eb0a839ec352934267adba34087bfa75192fec9b7b2d913"`
[INFO] [stdout] 8db7c9db2a451b0e0eb0a839ec352934267adba34087bfa75192fec9b7b2d913