[INFO] cloning repository https://github.com/dyllonrc/HAROLD
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dyllonrc/HAROLD" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdyllonrc%2FHAROLD", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdyllonrc%2FHAROLD'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1f039766d4d86e1df8f5add167ac35c3fc691bf2
[INFO] checking dyllonrc/HAROLD against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdyllonrc%2FHAROLD" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dyllonrc/HAROLD on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dyllonrc/HAROLD
[INFO] finished tweaking git repo https://github.com/dyllonrc/HAROLD
[INFO] tweaked toml for git repo https://github.com/dyllonrc/HAROLD written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/dyllonrc/HAROLD already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libflate v0.1.21
[INFO] [stderr]   Downloaded unicase v2.3.0
[INFO] [stderr]   Downloaded tokio-uds v0.1.7
[INFO] [stderr]   Downloaded hyper v0.12.25
[INFO] [stderr]   Downloaded nom v2.2.1
[INFO] [stderr]   Downloaded tokio-threadpool v0.1.12
[INFO] [stderr]   Downloaded tempfile v3.0.7
[INFO] [stderr]   Downloaded lber v0.1.6
[INFO] [stderr]   Downloaded tokio-uds-proto v0.1.1
[INFO] [stderr]   Downloaded tokio-current-thread v0.1.5
[INFO] [stderr]   Downloaded tokio v0.1.16
[INFO] [stderr]   Downloaded http v0.1.16
[INFO] [stderr]   Downloaded cc v1.0.30
[INFO] [stderr]   Downloaded openssl-sys v0.9.42
[INFO] [stderr]   Downloaded serde v1.0.89
[INFO] [stderr]   Downloaded reqwest v0.9.11
[INFO] [stderr]   Downloaded tokio-sync v0.1.3
[INFO] [stderr]   Downloaded ldap3 v0.6.1
[INFO] [stderr]   Downloaded openssl v0.10.19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fed591e53d405a80190cdc3798c13c4f7ad60ecf353db35c8d35c404609af61c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "fed591e53d405a80190cdc3798c13c4f7ad60ecf353db35c8d35c404609af61c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fed591e53d405a80190cdc3798c13c4f7ad60ecf353db35c8d35c404609af61c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fed591e53d405a80190cdc3798c13c4f7ad60ecf353db35c8d35c404609af61c", kill_on_drop: false }`
[INFO] [stdout] fed591e53d405a80190cdc3798c13c4f7ad60ecf353db35c8d35c404609af61c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 804edbbe1faace2dc7b962e52a3e09524b87eed4cbbc21fe2ab51d407ec01bfe
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "804edbbe1faace2dc7b962e52a3e09524b87eed4cbbc21fe2ab51d407ec01bfe", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.50
[INFO] [stderr]     Checking cfg-if v0.1.7
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]    Compiling openssl v0.10.19
[INFO] [stderr]     Checking scoped-tls v0.1.2
[INFO] [stderr]     Checking indexmap v1.0.2
[INFO] [stderr]     Checking smallvec v0.2.1
[INFO] [stderr]     Checking slab v0.3.0
[INFO] [stderr]    Compiling encoding_rs v0.8.17
[INFO] [stderr]     Checking take v0.1.0
[INFO] [stderr]     Checking nom v2.2.1
[INFO] [stderr]     Checking unicode-normalization v0.1.8
[INFO] [stderr]     Checking tokio-service v0.1.0
[INFO] [stderr]    Compiling unicase v2.3.0
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking tokio-sync v0.1.3
[INFO] [stderr]     Checking owning_ref v0.4.0
[INFO] [stderr]     Checking crc32fast v1.2.0
[INFO] [stderr]     Checking crossbeam-utils v0.6.5
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]    Compiling openssl-sys v0.9.42
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking want v0.0.6
[INFO] [stderr]     Checking libflate v0.1.21
[INFO] [stderr]     Checking lock_api v0.1.5
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking tokio-executor v0.1.6
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking tokio-timer v0.2.10
[INFO] [stderr]     Checking tokio-current-thread v0.1.5
[INFO] [stderr]     Checking crossbeam-epoch v0.7.1
[INFO] [stderr]     Checking mime v0.3.13
[INFO] [stderr]    Compiling native-tls v0.2.2
[INFO] [stderr]    Compiling rand_os v0.1.3
[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 rand v0.4.6
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking mio v0.6.16
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking http v0.1.16
[INFO] [stderr]     Checking lber v0.1.6
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking tokio-threadpool v0.1.12
[INFO] [stderr]     Checking uuid v0.7.2
[INFO] [stderr]     Checking tokio-codec v0.1.1
[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 serde_urlencoded v0.5.4
[INFO] [stderr]     Checking tokio-fs v0.1.6
[INFO] [stderr]    Compiling mime_guess v2.0.0-alpha.6
[INFO] [stderr]     Checking tokio-reactor v0.1.9
[INFO] [stderr]     Checking tokio-uds v0.2.5
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio-udp v0.1.3
[INFO] [stderr]     Checking h2 v0.1.16
[INFO] [stderr]     Checking tokio v0.1.16
[INFO] [stderr]     Checking tokio-core v0.1.17
[INFO] [stderr]     Checking tokio-tls v0.2.1
[INFO] [stderr]     Checking tokio-proto v0.1.1
[INFO] [stderr]     Checking tokio-uds v0.1.7
[INFO] [stderr]     Checking tokio-uds-proto v0.1.1
[INFO] [stderr]     Checking hyper v0.12.25
[INFO] [stderr]     Checking ldap3 v0.6.1
[INFO] [stderr]     Checking hyper-tls v0.3.1
[INFO] [stderr]     Checking reqwest v0.9.11
[INFO] [stderr]     Checking harold v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `BufWriter`
[INFO] [stdout]  --> src/main.rs:2:42
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{BufReader, BufRead, Write, BufWriter};
[INFO] [stdout]   |                                          ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `thread`
[INFO] [stdout]  --> src/main.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::{thread};
[INFO] [stdout]   |           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/main.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | /         loop {
[INFO] [stdout] 20 | |             ibutton_loop(&mut reader);
[INFO] [stdout] 21 | |         }
[INFO] [stdout]    | |_________- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 28 |       Ok(())
[INFO] [stdout]    |       ^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufWriter`
[INFO] [stdout]  --> src/main.rs:2:42
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{BufReader, BufRead, Write, BufWriter};
[INFO] [stdout]   |                                          ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `thread`
[INFO] [stdout]  --> src/main.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::{thread};
[INFO] [stdout]   |           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/main.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | /         loop {
[INFO] [stdout] 20 | |             ibutton_loop(&mut reader);
[INFO] [stdout] 21 | |         }
[INFO] [stdout]    | |_________- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 28 |       Ok(())
[INFO] [stdout]    |       ^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 15s
[INFO] running `Command { std: "docker" "inspect" "804edbbe1faace2dc7b962e52a3e09524b87eed4cbbc21fe2ab51d407ec01bfe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "804edbbe1faace2dc7b962e52a3e09524b87eed4cbbc21fe2ab51d407ec01bfe", kill_on_drop: false }`
[INFO] [stdout] 804edbbe1faace2dc7b962e52a3e09524b87eed4cbbc21fe2ab51d407ec01bfe