[INFO] updating cached repository https://github.com/loustak/serde-test
[INFO] running `"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"`
[INFO] [stderr] From https://github.com/loustak/serde-test
[INFO] [stderr]    50cb4eb..dc09a51  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] dc09a51f5a7b5f94ca1fcb365fb1d4f085bc7337
[INFO] checking loustak/serde-test against master#339f574809bf8e4166b8de3cdbe7df181d37af3d for pr-71896
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Floustak%2Fserde-test" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/loustak/serde-test on toolchain 339f574809bf8e4166b8de3cdbe7df181d37af3d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+339f574809bf8e4166b8de3cdbe7df181d37af3d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/loustak/serde-test
[INFO] finished tweaking git repo https://github.com/loustak/serde-test
[INFO] tweaked toml for git repo https://github.com/loustak/serde-test written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/loustak/serde-test already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+339f574809bf8e4166b8de3cdbe7df181d37af3d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+339f574809bf8e4166b8de3cdbe7df181d37af3d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] f830fe42086fc8b36e7713c8a9ea38b44b984021918efaf5f9b8a64603d8b105
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "f830fe42086fc8b36e7713c8a9ea38b44b984021918efaf5f9b8a64603d8b105"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling ryu v1.0.3
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]     Checking serde v1.0.106
[INFO] [stderr]     Checking serde_json v1.0.51
[INFO] [stderr]     Checking bincode v1.2.1
[INFO] [stderr]     Checking rugdb v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::collections::HashSet`
[INFO] [stderr]  --> src/graph_engine/model/graph.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::collections::HashSet;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `serde_json::json`
[INFO] [stderr]  --> src/graph_engine/traversal/traversal.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use serde_json::json;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::graph_engine::traversal::out::*`
[INFO] [stderr]   --> src/graph_engine/traversal/traversal.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use crate::graph_engine::traversal::out::*;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashSet`
[INFO] [stderr]  --> src/graph_engine/model/graph.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::collections::HashSet;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `serde_json::json`
[INFO] [stderr]  --> src/graph_engine/traversal/traversal.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use serde_json::json;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::graph_engine::traversal::out::*`
[INFO] [stderr]   --> src/graph_engine/traversal/traversal.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use crate::graph_engine::traversal::out::*;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `intern_vertexes_out`
[INFO] [stderr]    --> src/graph_engine/traversal/traversal.rs:100:4
[INFO] [stderr]     |
[INFO] [stderr] 100 | fn intern_vertexes_out() {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `intern_vertexes_out`
[INFO] [stderr]    --> src/graph_engine/traversal/traversal.rs:100:4
[INFO] [stderr]     |
[INFO] [stderr] 100 | fn intern_vertexes_out() {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 48.45s
[INFO] running `"docker" "inspect" "f830fe42086fc8b36e7713c8a9ea38b44b984021918efaf5f9b8a64603d8b105"`
[INFO] running `"docker" "rm" "-f" "f830fe42086fc8b36e7713c8a9ea38b44b984021918efaf5f9b8a64603d8b105"`
[INFO] [stdout] f830fe42086fc8b36e7713c8a9ea38b44b984021918efaf5f9b8a64603d8b105