[INFO] cloning repository https://github.com/Kode-Cultur/rusty-gopher
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Kode-Cultur/rusty-gopher" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKode-Cultur%2Frusty-gopher", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKode-Cultur%2Frusty-gopher'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c2480e8ccf719ad56cd08b49ff7da40232b2a83f
[INFO] checking Kode-Cultur/rusty-gopher against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKode-Cultur%2Frusty-gopher" "/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/Kode-Cultur/rusty-gopher 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/Kode-Cultur/rusty-gopher
[INFO] finished tweaking git repo https://github.com/Kode-Cultur/rusty-gopher
[INFO] tweaked toml for git repo https://github.com/Kode-Cultur/rusty-gopher written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/Kode-Cultur/rusty-gopher 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]     Blocking waiting for file lock on package cache
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", 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] c892d7566cd5d0e62de6dea09d71dc1f6a039a90064a151893797fa038cb8838
[INFO] running `Command { std: "docker" "start" "-a" "c892d7566cd5d0e62de6dea09d71dc1f6a039a90064a151893797fa038cb8838", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c892d7566cd5d0e62de6dea09d71dc1f6a039a90064a151893797fa038cb8838", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c892d7566cd5d0e62de6dea09d71dc1f6a039a90064a151893797fa038cb8838", kill_on_drop: false }`
[INFO] [stdout] c892d7566cd5d0e62de6dea09d71dc1f6a039a90064a151893797fa038cb8838
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "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] e4ffc0e29ae368c6512b1ea5cefbb140971ba0561e9d10d002b2b3091d7ce890
[INFO] running `Command { std: "docker" "start" "-a" "e4ffc0e29ae368c6512b1ea5cefbb140971ba0561e9d10d002b2b3091d7ce890", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.3
[INFO] [stderr]     Checking strsim v0.6.0
[INFO] [stderr]     Checking slog v2.2.3
[INFO] [stderr]     Checking memchr v1.0.2
[INFO] [stderr]     Checking users v0.6.1
[INFO] [stderr]     Checking hostname v0.1.4
[INFO] [stderr]     Checking term v0.5.1
[INFO] [stderr]     Checking toml v0.4.6
[INFO] [stderr]     Checking aho-corasick v0.6.4
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]    Compiling syn v0.13.7
[INFO] [stderr]     Checking log v0.4.1
[INFO] [stderr]     Checking crossbeam-utils v0.3.2
[INFO] [stderr]     Checking net2 v0.2.32
[INFO] [stderr]     Checking nom v3.2.1
[INFO] [stderr]     Checking crossbeam-epoch v0.4.1
[INFO] [stderr]     Checking tokio-io v0.1.6
[INFO] [stderr]     Checking mio v0.6.14
[INFO] [stderr]     Checking regex v0.2.11
[INFO] [stderr]     Checking slog-term v2.4.0
[INFO] [stderr]     Checking crossbeam-deque v0.3.1
[INFO] [stderr]     Checking tokio-threadpool v0.1.3
[INFO] [stderr]     Checking tokio-reactor v0.1.1
[INFO] [stderr]     Checking tokio-udp v0.1.0
[INFO] [stderr]     Checking tokio-tcp v0.1.0
[INFO] [stderr]     Checking tokio-fs v0.1.0
[INFO] [stderr]     Checking tokio v0.1.6
[INFO] [stderr]    Compiling serde_derive_internals v0.23.1
[INFO] [stderr]    Compiling serde_derive v1.0.45
[INFO] [stderr]     Checking docopt v0.8.3
[INFO] [stderr]     Checking rusty-gopher v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `search_string`
[INFO] [stdout]    --> src/main.rs:229:56
[INFO] [stdout]     |
[INFO] [stdout] 229 |                     GopherMessage::SearchDir(selector, search_string) => {
[INFO] [stdout]     |                                                        ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_search_string`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:300:17
[INFO] [stdout]     |
[INFO] [stdout] 300 |             let mut selector = String::new();
[INFO] [stdout]     |                 ----^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `SearchDir`
[INFO] [stdout]    --> src/main.rs:241:5
[INFO] [stdout]     |
[INFO] [stdout] 241 |     SearchDir(String, String),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `search_string`
[INFO] [stdout]    --> src/main.rs:229:56
[INFO] [stdout]     |
[INFO] [stdout] 229 |                     GopherMessage::SearchDir(selector, search_string) => {
[INFO] [stdout]     |                                                        ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_search_string`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:300:17
[INFO] [stdout]     |
[INFO] [stdout] 300 |             let mut selector = String::new();
[INFO] [stdout]     |                 ----^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `SearchDir`
[INFO] [stdout]    --> src/main.rs:241:5
[INFO] [stdout]     |
[INFO] [stdout] 241 |     SearchDir(String, String),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.40s
[INFO] running `Command { std: "docker" "inspect" "e4ffc0e29ae368c6512b1ea5cefbb140971ba0561e9d10d002b2b3091d7ce890", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4ffc0e29ae368c6512b1ea5cefbb140971ba0561e9d10d002b2b3091d7ce890", kill_on_drop: false }`
[INFO] [stdout] e4ffc0e29ae368c6512b1ea5cefbb140971ba0561e9d10d002b2b3091d7ce890