[INFO] updating cached repository https://github.com/whiter4bbit/co2-monitor
[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] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d44994b2540837bbbeb8e098047f8642f4a5fb08
[INFO] checking whiter4bbit/co2-monitor against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwhiter4bbit%2Fco2-monitor" "/workspace/builds/worker-1/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/whiter4bbit/co2-monitor on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/whiter4bbit/co2-monitor
[INFO] finished tweaking git repo https://github.com/whiter4bbit/co2-monitor
[INFO] tweaked toml for git repo https://github.com/whiter4bbit/co2-monitor written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/whiter4bbit/co2-monitor already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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] a4413235f840cfb7cc63f42b09f71cfc7cc1ec94588f7c1efb9c89aaaeebb947
[INFO] running `"docker" "start" "-a" "a4413235f840cfb7cc63f42b09f71cfc7cc1ec94588f7c1efb9c89aaaeebb947"`
[INFO] [stderr]    Compiling openssl v0.10.16
[INFO] [stderr]    Compiling serde v1.0.88
[INFO] [stderr]    Compiling encoding_rs v0.8.16
[INFO] [stderr]     Checking crossbeam-utils v0.6.5
[INFO] [stderr]    Compiling openssl-sys v0.9.40
[INFO] [stderr]    Compiling hidapi v0.5.0
[INFO] [stderr]    Compiling libc v0.2.48
[INFO] [stderr]     Checking smallvec v0.6.8
[INFO] [stderr]     Checking rand_os v0.1.2
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking num_cpus v1.10.0
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking backtrace-sys v0.1.28
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]     Checking libflate v0.1.19
[INFO] [stderr]     Checking tokio-executor v0.1.6
[INFO] [stderr]     Checking crossbeam-epoch v0.7.1
[INFO] [stderr]     Checking bytes v0.4.11
[INFO] [stderr]     Checking crossbeam-channel v0.3.8
[INFO] [stderr]     Checking unicode-normalization v0.1.8
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking rand_pcg v0.1.1
[INFO] [stderr]     Checking backtrace v0.3.13
[INFO] [stderr]     Checking mio v0.6.16
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]     Checking tokio-current-thread v0.1.4
[INFO] [stderr]     Checking tokio-timer v0.2.10
[INFO] [stderr]     Checking crossbeam-deque v0.6.3
[INFO] [stderr]     Checking tokio-io v0.1.11
[INFO] [stderr]     Checking http v0.1.15
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]    Compiling native-tls v0.2.2
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking parking_lot_core v0.4.0
[INFO] [stderr]     Checking uuid v0.7.2
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]    Compiling mime_guess v2.0.0-alpha.6
[INFO] [stderr]     Checking h2 v0.1.16
[INFO] [stderr]     Checking crossbeam v0.6.0
[INFO] [stderr]     Checking tokio-reactor v0.1.8
[INFO] [stderr]     Checking tokio-threadpool v0.1.11
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]     Checking tokio v0.1.15
[INFO] [stderr]     Checking hyper v0.12.24
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking serde_json v1.0.38
[INFO] [stderr]     Checking serde_urlencoded v0.5.4
[INFO] [stderr]     Checking hyper-tls v0.3.1
[INFO] [stderr]     Checking reqwest v0.9.9
[INFO] [stderr]     Checking co2-monitor v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `SystemTime`
[INFO] [stderr]  --> src/sender.rs:1:27
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::time::{Duration, SystemTime};
[INFO] [stderr]   |                           ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `CSV`
[INFO] [stderr]   --> src/main.rs:15:19
[INFO] [stderr]    |
[INFO] [stderr] 15 | use measurement::{CSV, Measurement};
[INFO] [stderr]    |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `SystemTime`
[INFO] [stderr]  --> src/sender.rs:1:27
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::time::{Duration, SystemTime};
[INFO] [stderr]   |                           ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `CSV`
[INFO] [stderr]   --> src/main.rs:15:19
[INFO] [stderr]    |
[INFO] [stderr] 15 | use measurement::{CSV, Measurement};
[INFO] [stderr]    |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:51:9
[INFO] [stderr]    |
[INFO] [stderr] 51 | /         sender.send_with_retry_forever(&measurements).map_err(
[INFO] [stderr] 52 | |             |err| println!("Can not send the data: {}", err.source().unwrap())
[INFO] [stderr] 53 | |         );
[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] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:51:9
[INFO] [stderr]    |
[INFO] [stderr] 51 | /         sender.send_with_retry_forever(&measurements).map_err(
[INFO] [stderr] 52 | |             |err| println!("Can not send the data: {}", err.source().unwrap())
[INFO] [stderr] 53 | |         );
[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 1m 16s
[INFO] running `"docker" "inspect" "a4413235f840cfb7cc63f42b09f71cfc7cc1ec94588f7c1efb9c89aaaeebb947"`
[INFO] running `"docker" "rm" "-f" "a4413235f840cfb7cc63f42b09f71cfc7cc1ec94588f7c1efb9c89aaaeebb947"`
[INFO] [stdout] a4413235f840cfb7cc63f42b09f71cfc7cc1ec94588f7c1efb9c89aaaeebb947