[INFO] cloning repository https://github.com/theotherphil/flux
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/theotherphil/flux" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftheotherphil%2Fflux", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftheotherphil%2Fflux'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 308946086e90538c9fe548b53242e3bec90cc22c
[INFO] checking theotherphil/flux against master#b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18 for pr-79470
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftheotherphil%2Fflux" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/theotherphil/flux on toolchain b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/theotherphil/flux
[INFO] finished tweaking git repo https://github.com/theotherphil/flux
[INFO] tweaked toml for git repo https://github.com/theotherphil/flux written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/theotherphil/flux already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f542759a349d4e15995adb48c7d9dff01cf676966ffd7c4e9a48ee798e9058a4
[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" "f542759a349d4e15995adb48c7d9dff01cf676966ffd7c4e9a48ee798e9058a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f542759a349d4e15995adb48c7d9dff01cf676966ffd7c4e9a48ee798e9058a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f542759a349d4e15995adb48c7d9dff01cf676966ffd7c4e9a48ee798e9058a4", kill_on_drop: false }`
[INFO] [stdout] f542759a349d4e15995adb48c7d9dff01cf676966ffd7c4e9a48ee798e9058a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 659f2f22cbdf98f957978221e665de439ccbb52b7a361e30da85c82151e6a516
[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" "659f2f22cbdf98f957978221e665de439ccbb52b7a361e30da85c82151e6a516", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.34
[INFO] [stderr]    Compiling libc v0.2.58
[INFO] [stderr]    Compiling cc v1.0.37
[INFO] [stderr]    Compiling autocfg v0.1.4
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling unicode-segmentation v1.3.0
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]     Checking rustc-demangle v0.1.15
[INFO] [stderr]    Compiling ryu v0.2.8
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]     Checking linked-hash-map v0.5.2
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking dtoa v0.4.4
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking yaml-rust v0.4.3
[INFO] [stderr]    Compiling backtrace v0.3.26
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling serde_derive v1.0.92
[INFO] [stderr]    Compiling structopt-derive v0.2.17
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking exitfailure v0.5.1
[INFO] [stderr]     Checking structopt v0.2.17
[INFO] [stderr]     Checking serde v1.0.92
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking serde_yaml v0.8.9
[INFO] [stderr]     Checking flux v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]    --> src/main.rs:234:1
[INFO] [stdout]     |
[INFO] [stdout] 234 | / macro_rules! attrs {
[INFO] [stdout] 235 | |     ( $( $attr:expr => $value:expr),* ) => {
[INFO] [stdout] 236 | |         {
[INFO] [stdout] 237 | |             let mut vals = Vec::new();
[INFO] [stdout] ...   |
[INFO] [stdout] 244 | |     }
[INFO] [stdout] 245 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `num_colors`
[INFO] [stdout]   --> src/main.rs:91:8
[INFO] [stdout]    |
[INFO] [stdout] 91 |     fn num_colors(self) -> usize {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `COLOUR_SCHEME`
[INFO] [stdout]    --> src/main.rs:159:5
[INFO] [stdout]     |
[INFO] [stdout] 159 |     const COLOUR_SCHEME: &str = "dark28";
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `num_colors`
[INFO] [stdout]   --> src/main.rs:91:8
[INFO] [stdout]    |
[INFO] [stdout] 91 |     fn num_colors(self) -> usize {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `COLOUR_SCHEME`
[INFO] [stdout]    --> src/main.rs:159:5
[INFO] [stdout]     |
[INFO] [stdout] 159 |     const COLOUR_SCHEME: &str = "dark28";
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 02s
[INFO] running `Command { std: "docker" "inspect" "659f2f22cbdf98f957978221e665de439ccbb52b7a361e30da85c82151e6a516", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "659f2f22cbdf98f957978221e665de439ccbb52b7a361e30da85c82151e6a516", kill_on_drop: false }`
[INFO] [stdout] 659f2f22cbdf98f957978221e665de439ccbb52b7a361e30da85c82151e6a516