[INFO] cloning repository https://github.com/lfitchett/learningRust
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lfitchett/learningRust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flfitchett%2FlearningRust"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flfitchett%2FlearningRust'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6883d60b8058eb2458239197e6b39596656e074c
[INFO] checking lfitchett/learningRust against try#ba14a92a10441c4b839ce71e6ef5f7a48bbff18f for prs-64470-and-65389
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flfitchett%2FlearningRust" "/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/lfitchett/learningRust on toolchain ba14a92a10441c4b839ce71e6ef5f7a48bbff18f
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba14a92a10441c4b839ce71e6ef5f7a48bbff18f" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/lfitchett/learningRust
[INFO] finished tweaking git repo https://github.com/lfitchett/learningRust
[INFO] tweaked toml for git repo https://github.com/lfitchett/learningRust written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/lfitchett/learningRust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba14a92a10441c4b839ce71e6ef5f7a48bbff18f" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded parse_duration v2.0.1
[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" "+ba14a92a10441c4b839ce71e6ef5f7a48bbff18f" "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] 09f8e5e08dba2709ddabd0669eddf7335e418c27ff3edf36093450cbe8a27fac
[INFO] running `"docker" "start" "-a" "09f8e5e08dba2709ddabd0669eddf7335e418c27ff3edf36093450cbe8a27fac"`
[INFO] [stderr]    Compiling sysinfo v0.9.5
[INFO] [stderr]     Checking linked-list v0.0.3
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling num-bigint v0.2.3
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking chrono v0.4.7
[INFO] [stderr]     Checking rayon-core v1.6.0
[INFO] [stderr]     Checking rayon v1.2.0
[INFO] [stderr]     Checking ndarray v0.12.1
[INFO] [stderr]     Checking num-rational v0.2.2
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking parse_duration v2.0.1
[INFO] [stderr]     Checking playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `chrono::*`
[INFO] [stderr]  --> src/future.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use chrono::*;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `chrono::*`
[INFO] [stderr]  --> src/future.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use chrono::*;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.12s
[INFO] running `"docker" "inspect" "09f8e5e08dba2709ddabd0669eddf7335e418c27ff3edf36093450cbe8a27fac"`
[INFO] running `"docker" "rm" "-f" "09f8e5e08dba2709ddabd0669eddf7335e418c27ff3edf36093450cbe8a27fac"`
[INFO] [stdout] 09f8e5e08dba2709ddabd0669eddf7335e418c27ff3edf36093450cbe8a27fac