[INFO] cloning repository https://github.com/vladvasiliu/i3helper
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vladvasiliu/i3helper" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvladvasiliu%2Fi3helper", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvladvasiliu%2Fi3helper'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fae27ed56482fd671ce19155216b66ea9a618580
[INFO] checking vladvasiliu/i3helper against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvladvasiliu%2Fi3helper" "/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/vladvasiliu/i3helper on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/vladvasiliu/i3helper
[INFO] finished tweaking git repo https://github.com/vladvasiliu/i3helper
[INFO] tweaked toml for git repo https://github.com/vladvasiliu/i3helper written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/vladvasiliu/i3helper already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d5797deb3b9d7ff461c1b5ee3cb2d4b3289ec1e9ad98421e3e8f82ca8f2fbfd1
[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" "d5797deb3b9d7ff461c1b5ee3cb2d4b3289ec1e9ad98421e3e8f82ca8f2fbfd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d5797deb3b9d7ff461c1b5ee3cb2d4b3289ec1e9ad98421e3e8f82ca8f2fbfd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5797deb3b9d7ff461c1b5ee3cb2d4b3289ec1e9ad98421e3e8f82ca8f2fbfd1", kill_on_drop: false }`
[INFO] [stdout] d5797deb3b9d7ff461c1b5ee3cb2d4b3289ec1e9ad98421e3e8f82ca8f2fbfd1
[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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cf0646a7f920de3a9dc0566ba4f5d23ce16c2c49e86691a136082ced4df70f43
[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" "cf0646a7f920de3a9dc0566ba4f5d23ce16c2c49e86691a136082ced4df70f43", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.20
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.40
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling proc-macro-nested v0.1.6
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]     Checking once_cell v1.4.1
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking futures-channel v0.3.5
[INFO] [stderr]     Checking futures-task v0.3.5
[INFO] [stderr]     Checking fern v0.6.0
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.35
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking serde_json v1.0.57
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling pin-project-internal v0.4.23
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling serde_repr v0.1.6
[INFO] [stderr]     Checking tokio v0.2.22
[INFO] [stderr]     Checking pin-project v0.4.23
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking i3ipc-types v0.10.0
[INFO] [stderr]     Checking futures-executor v0.3.5
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]     Checking tokio-i3ipc v0.10.0
[INFO] [stderr]     Checking i3helper v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `info`
[INFO] [stdout]  --> src/i3.rs:2:18
[INFO] [stdout]   |
[INFO] [stdout] 2 | use log::{debug, info};
[INFO] [stdout]   |                  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `info`
[INFO] [stdout]  --> src/i3.rs:2:18
[INFO] [stdout]   |
[INFO] [stdout] 2 | use log::{debug, info};
[INFO] [stdout]   |                  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/i3.rs:95:19
[INFO] [stdout]    |
[INFO] [stdout] 95 |     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
[INFO] [stdout]    |                   ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/i3.rs:95:19
[INFO] [stdout]    |
[INFO] [stdout] 95 |     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
[INFO] [stdout]    |                   ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[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 58.73s
[INFO] running `Command { std: "docker" "inspect" "cf0646a7f920de3a9dc0566ba4f5d23ce16c2c49e86691a136082ced4df70f43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf0646a7f920de3a9dc0566ba4f5d23ce16c2c49e86691a136082ced4df70f43", kill_on_drop: false }`
[INFO] [stdout] cf0646a7f920de3a9dc0566ba4f5d23ce16c2c49e86691a136082ced4df70f43