[INFO] cloning repository https://github.com/alirux/rust_examples
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/alirux/rust_examples" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falirux%2Frust_examples", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falirux%2Frust_examples'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cdf73e1f5682819925bff17ad5afce0ed12b8252
[INFO] checking alirux/rust_examples against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falirux%2Frust_examples" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/alirux/rust_examples on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/alirux/rust_examples
[INFO] finished tweaking git repo https://github.com/alirux/rust_examples
[INFO] tweaked toml for git repo https://github.com/alirux/rust_examples written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/alirux/rust_examples already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0ad7239022bab5de2d5454d4c74fea00ee8d0e4100859ef56f015ac1de1bedd7
[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" "0ad7239022bab5de2d5454d4c74fea00ee8d0e4100859ef56f015ac1de1bedd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0ad7239022bab5de2d5454d4c74fea00ee8d0e4100859ef56f015ac1de1bedd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ad7239022bab5de2d5454d4c74fea00ee8d0e4100859ef56f015ac1de1bedd7", kill_on_drop: false }`
[INFO] [stdout] 0ad7239022bab5de2d5454d4c74fea00ee8d0e4100859ef56f015ac1de1bedd7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "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] f323869d3cb675a53d8c644fc572f41226ec57384d391b09dc689aa0435d702f
[INFO] running `Command { std: "docker" "start" "-a" "f323869d3cb675a53d8c644fc572f41226ec57384d391b09dc689aa0435d702f", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_examples v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `created_on`
[INFO] [stdout]   --> src/bin/structs.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |         created_on: String,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `created_by`
[INFO] [stdout]   --> src/bin/structs.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |         created_by: String,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `urgent`
[INFO] [stdout]   --> src/bin/structs.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |         urgent: bool,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `_enve1Copy` should have a snake case name
[INFO] [stdout]   --> src/bin/structs.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let _enve1Copy = Envelope {
[INFO] [stdout]    |         ^^^^^^^^^^ help: convert the identifier to snake case: `_enve1_copy`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `_enve1Copy` should have a snake case name
[INFO] [stdout]   --> src/bin/structs.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let _enve1Copy = Envelope {
[INFO] [stdout]    |         ^^^^^^^^^^ help: convert the identifier to snake case: `_enve1_copy`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `INPROGRESS`
[INFO] [stdout]   --> src/bin/enum.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |         INPROGRESS,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `WORKED`
[INFO] [stdout]   --> src/bin/enum.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |         WORKED(String),
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `by`
[INFO] [stdout]   --> src/bin/enum.rs:15:17
[INFO] [stdout]    |
[INFO] [stdout] 15 |         STORED{ by: String, when: String },
[INFO] [stdout]    |                 ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `when`
[INFO] [stdout]   --> src/bin/enum.rs:15:29
[INFO] [stdout]    |
[INFO] [stdout] 15 |         STORED{ by: String, when: String },
[INFO] [stdout]    |                             ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "f323869d3cb675a53d8c644fc572f41226ec57384d391b09dc689aa0435d702f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f323869d3cb675a53d8c644fc572f41226ec57384d391b09dc689aa0435d702f", kill_on_drop: false }`
[INFO] [stdout] f323869d3cb675a53d8c644fc572f41226ec57384d391b09dc689aa0435d702f