[INFO] updating cached repository https://github.com/dobrakmato/tsdb
[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/dobrakmato/tsdb
[INFO] [stderr]    5a9ba4f..29a0466  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 29a04669bece6fa79512294b6e4247ed10d0c984
[INFO] checking dobrakmato/tsdb against try#e922e6444795ab795fab1943288aee3d543699b8 for pr-66852
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdobrakmato%2Ftsdb" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dobrakmato/tsdb on toolchain e922e6444795ab795fab1943288aee3d543699b8
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e922e6444795ab795fab1943288aee3d543699b8" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/dobrakmato/tsdb
[INFO] finished tweaking git repo https://github.com/dobrakmato/tsdb
[INFO] tweaked toml for git repo https://github.com/dobrakmato/tsdb written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/dobrakmato/tsdb already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e922e6444795ab795fab1943288aee3d543699b8" "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" "+e922e6444795ab795fab1943288aee3d543699b8" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 93fe59b3d9797169d5136f46c7e30ed44859624a8114abe4b7931ff0e31a9d15
[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" "93fe59b3d9797169d5136f46c7e30ed44859624a8114abe4b7931ff0e31a9d15"`
[INFO] [stderr]    Compiling syn v1.0.9
[INFO] [stderr]    Compiling serde v1.0.103
[INFO] [stderr]     Checking byteio v0.2.3
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking nano-leb128 v0.1.0
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]    Compiling serde_derive v1.0.103
[INFO] [stderr]     Checking serde_json v1.0.42
[INFO] [stderr]     Checking tsdb v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/engine.rs:296:17
[INFO] [stderr]     |
[INFO] [stderr] 296 |             let mut a = c.get_mut(&0);
[INFO] [stderr]     |                 ----^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/engine.rs:1204:13
[INFO] [stderr]      |
[INFO] [stderr] 1204 |             s.create_series("default");
[INFO] [stderr]      |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 46.45s
[INFO] running `"docker" "inspect" "93fe59b3d9797169d5136f46c7e30ed44859624a8114abe4b7931ff0e31a9d15"`
[INFO] running `"docker" "rm" "-f" "93fe59b3d9797169d5136f46c7e30ed44859624a8114abe4b7931ff0e31a9d15"`
[INFO] [stdout] 93fe59b3d9797169d5136f46c7e30ed44859624a8114abe4b7931ff0e31a9d15