[INFO] cloning repository https://github.com/Arkanosis/arkbot-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Arkanosis/arkbot-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArkanosis%2Farkbot-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArkanosis%2Farkbot-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 231b63a7634ab41619d5a9f2aca25c5a8c230269
[INFO] checking Arkanosis/arkbot-rs against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArkanosis%2Farkbot-rs" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Arkanosis/arkbot-rs on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Arkanosis/arkbot-rs
[INFO] finished tweaking git repo https://github.com/Arkanosis/arkbot-rs
[INFO] tweaked toml for git repo https://github.com/Arkanosis/arkbot-rs written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/Arkanosis/arkbot-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-util v0.6.5
[INFO] [stderr]   Downloaded confy v0.4.0
[INFO] [stderr]   Downloaded bzip2 v0.4.2
[INFO] [stderr]   Downloaded wasm-bindgen-futures v0.4.22
[INFO] [stderr]   Downloaded tokio v1.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 177861434a80d9ba8f068eb342eb9dbf86917d4b77ba4e1506d727ffefa629fe
[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" "177861434a80d9ba8f068eb342eb9dbf86917d4b77ba4e1506d727ffefa629fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "177861434a80d9ba8f068eb342eb9dbf86917d4b77ba4e1506d727ffefa629fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "177861434a80d9ba8f068eb342eb9dbf86917d4b77ba4e1506d727ffefa629fe", kill_on_drop: false }`
[INFO] [stdout] 177861434a80d9ba8f068eb342eb9dbf86917d4b77ba4e1506d727ffefa629fe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1f600b9a636be0a2ebfa4b2838d9055a7c8b860041ad650b24d74dea6cb9ca9a
[INFO] running `Command { std: "docker" "start" "-a" "1f600b9a636be0a2ebfa4b2838d9055a7c8b860041ad650b24d74dea6cb9ca9a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.91
[INFO] [stderr]    Compiling syn v1.0.64
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]     Checking futures-core v0.3.13
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling openssl v0.10.33
[INFO] [stderr]    Compiling httparse v1.3.5
[INFO] [stderr]    Compiling native-tls v0.2.7
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking futures-sink v0.3.13
[INFO] [stderr]     Checking futures-io v0.3.13
[INFO] [stderr]     Checking futures-task v0.3.13
[INFO] [stderr]     Checking openssl-probe v0.1.2
[INFO] [stderr]     Checking regex-syntax v0.6.23
[INFO] [stderr]    Compiling tokio v1.4.0
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]     Checking http v0.2.3
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking tinyvec v1.1.1
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]     Checking encoding_rs v0.8.28
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking quick-xml v0.22.0
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking futures-channel v0.3.13
[INFO] [stderr]     Checking futures-util v0.3.13
[INFO] [stderr]     Checking tracing v0.1.25
[INFO] [stderr]    Compiling openssl-sys v0.9.61
[INFO] [stderr]    Compiling bzip2-sys v0.1.10+1.0.8
[INFO] [stderr]     Checking unicode-normalization v0.1.17
[INFO] [stderr]     Checking mio v0.7.11
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking socket2 v0.3.19
[INFO] [stderr]     Checking dirs-sys v0.3.5
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking directories v2.0.2
[INFO] [stderr]     Checking directories-next v2.0.0
[INFO] [stderr]     Checking bzip2 v0.4.2
[INFO] [stderr]     Checking http-body v0.4.1
[INFO] [stderr]     Checking idna v0.2.2
[INFO] [stderr]     Checking regex v1.4.5
[INFO] [stderr]     Checking url v2.2.1
[INFO] [stderr]     Checking tokio-util v0.6.5
[INFO] [stderr]     Checking tokio-native-tls v0.3.0
[INFO] [stderr]     Checking h2 v0.3.2
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling pin-project-internal v1.0.6
[INFO] [stderr]     Checking pin-project v1.0.6
[INFO] [stderr]     Checking hyper v0.14.4
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking serde v1.0.125
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking serde_urlencoded v0.7.0
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stderr]     Checking docopt v1.1.1
[INFO] [stderr]     Checking reqwest v0.11.2
[INFO] [stderr]     Checking confy v0.4.0
[INFO] [stderr]     Checking arkbot v0.2.0-dev (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/processors/impasse.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/processors/impasse.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/dump/monitor.rs:29:29
[INFO] [stdout]    |
[INFO] [stdout] 29 | ...                   write!(&mut url, "/{}-{}-{}", wiki, &date, dump);
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/dump/monitor.rs:29:29
[INFO] [stdout]    |
[INFO] [stdout] 29 | ...                   write!(&mut url, "/{}-{}-{}", wiki, &date, dump);
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.62s
[INFO] running `Command { std: "docker" "inspect" "1f600b9a636be0a2ebfa4b2838d9055a7c8b860041ad650b24d74dea6cb9ca9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f600b9a636be0a2ebfa4b2838d9055a7c8b860041ad650b24d74dea6cb9ca9a", kill_on_drop: false }`
[INFO] [stdout] 1f600b9a636be0a2ebfa4b2838d9055a7c8b860041ad650b24d74dea6cb9ca9a