[INFO] cloning repository https://github.com/TheNeikos/rustdock
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TheNeikos/rustdock" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTheNeikos%2Frustdock", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTheNeikos%2Frustdock'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bdcd606a19eac6a619d7c4aa7b9f829e545c9b9f
[INFO] checking TheNeikos/rustdock against master#5e3f1b148db5bfa27fee52464ae1f5d34c49d77b for pr-75502
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTheNeikos%2Frustdock" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/TheNeikos/rustdock on toolchain 5e3f1b148db5bfa27fee52464ae1f5d34c49d77b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/TheNeikos/rustdock
[INFO] finished tweaking git repo https://github.com/TheNeikos/rustdock
[INFO] tweaked toml for git repo https://github.com/TheNeikos/rustdock written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/TheNeikos/rustdock already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f34d192b9fcc760648a513f8c41e99994da93420baed330929dc4d224d1222d0
[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" "f34d192b9fcc760648a513f8c41e99994da93420baed330929dc4d224d1222d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f34d192b9fcc760648a513f8c41e99994da93420baed330929dc4d224d1222d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f34d192b9fcc760648a513f8c41e99994da93420baed330929dc4d224d1222d0", kill_on_drop: false }`
[INFO] [stdout] f34d192b9fcc760648a513f8c41e99994da93420baed330929dc4d224d1222d0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "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] 74eb8e40deb6b4e27e9283fa9ad7a97420906a950dfda701b162987bd825db9e
[INFO] running `Command { std: "docker" "start" "-a" "74eb8e40deb6b4e27e9283fa9ad7a97420906a950dfda701b162987bd825db9e", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling serde v1.0.69
[INFO] [stderr]     Checking cfg-if v0.1.4
[INFO] [stderr]    Compiling regex v1.0.1
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking atty v0.2.10
[INFO] [stderr]    Compiling x11 v2.18.0
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]     Checking backtrace-sys v0.1.23
[INFO] [stderr]    Compiling failure_derive v0.1.1
[INFO] [stderr]    Compiling proc-macro2 v0.4.6
[INFO] [stderr]     Checking backtrace v0.3.9
[INFO] [stderr]     Checking aho-corasick v0.6.5
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]    Compiling quote v0.6.3
[INFO] [stderr]    Compiling syn v0.14.4
[INFO] [stderr]     Checking failure v0.1.1
[INFO] [stderr]     Checking textwidth v1.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.69
[INFO] [stderr]     Checking toml v0.4.6
[INFO] [stderr]     Checking rustdock v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Stdio` is imported redundantly
[INFO] [stdout]   --> src/main.rs:72:13
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::process::{Command, Stdio};
[INFO] [stdout]    |                             ----- the item `Stdio` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 72 |         use std::process::Stdio;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Stdio` is imported redundantly
[INFO] [stdout]   --> src/main.rs:72:13
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::process::{Command, Stdio};
[INFO] [stdout]    |                             ----- the item `Stdio` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 72 |         use std::process::Stdio;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `elem`
[INFO] [stdout]    --> src/main.rs:175:18
[INFO] [stdout]     |
[INFO] [stdout] 175 |             for (elem, idx) in config.elements[last_index..].iter().zip(last_index..) {
[INFO] [stdout]     |                  ^^^^ help: if this is intentional, prefix it with an underscore: `_elem`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `elem`
[INFO] [stdout]    --> src/main.rs:175:18
[INFO] [stdout]     |
[INFO] [stdout] 175 |             for (elem, idx) in config.elements[last_index..].iter().zip(last_index..) {
[INFO] [stdout]     |                  ^^^^ help: if this is intentional, prefix it with an underscore: `_elem`
[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 36.30s
[INFO] running `Command { std: "docker" "inspect" "74eb8e40deb6b4e27e9283fa9ad7a97420906a950dfda701b162987bd825db9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74eb8e40deb6b4e27e9283fa9ad7a97420906a950dfda701b162987bd825db9e", kill_on_drop: false }`
[INFO] [stdout] 74eb8e40deb6b4e27e9283fa9ad7a97420906a950dfda701b162987bd825db9e