[INFO] cloning repository https://github.com/sdaigo/collections
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sdaigo/collections" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsdaigo%2Fcollections", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsdaigo%2Fcollections'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c67deb3e26f75f48154cf6cece0886713e363652
[INFO] testing sdaigo/collections against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsdaigo%2Fcollections" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sdaigo/collections on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sdaigo/collections
[INFO] finished tweaking git repo https://github.com/sdaigo/collections
[INFO] tweaked toml for git repo https://github.com/sdaigo/collections written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/sdaigo/collections already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dd77200a20e9f3a2afa3da0630d582d712e9dbc42ce3646ff3b98c748f733209
[INFO] running `Command { std: "docker" "start" "-a" "dd77200a20e9f3a2afa3da0630d582d712e9dbc42ce3646ff3b98c748f733209", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dd77200a20e9f3a2afa3da0630d582d712e9dbc42ce3646ff3b98c748f733209", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd77200a20e9f3a2afa3da0630d582d712e9dbc42ce3646ff3b98c748f733209", kill_on_drop: false }`
[INFO] [stdout] dd77200a20e9f3a2afa3da0630d582d712e9dbc42ce3646ff3b98c748f733209
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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=warn" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4329d2c478fb4bfaf1049e64957925536e2e65c869d64fffd73a780bf19507cd
[INFO] running `Command { std: "docker" "start" "-a" "4329d2c478fb4bfaf1049e64957925536e2e65c869d64fffd73a780bf19507cd", kill_on_drop: false }`
[INFO] [stderr]    Compiling collections v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `v1`
[INFO] [stdout]  --> src/vector_examples.rs:2:6
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let v1: Vec<i32> = Vec::new();
[INFO] [stdout]   |         ^^ help: if this is intentional, prefix it with an underscore: `_v1`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `hashmap_example`
[INFO] [stdout]  --> src/hashmap_examples.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn hashmap_example() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `vector_example`
[INFO] [stdout]  --> src/vector_examples.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn vector_example() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.32s
[INFO] running `Command { std: "docker" "inspect" "4329d2c478fb4bfaf1049e64957925536e2e65c869d64fffd73a780bf19507cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4329d2c478fb4bfaf1049e64957925536e2e65c869d64fffd73a780bf19507cd", kill_on_drop: false }`
[INFO] [stdout] 4329d2c478fb4bfaf1049e64957925536e2e65c869d64fffd73a780bf19507cd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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=warn" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cc3bcd66252a280e4c00847e586da4a7cfc0ffa6038c0a233f631b3f4e3e99af
[INFO] running `Command { std: "docker" "start" "-a" "cc3bcd66252a280e4c00847e586da4a7cfc0ffa6038c0a233f631b3f4e3e99af", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling collections v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `v1`
[INFO] [stdout]  --> src/vector_examples.rs:2:6
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let v1: Vec<i32> = Vec::new();
[INFO] [stdout]   |         ^^ help: if this is intentional, prefix it with an underscore: `_v1`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `hashmap_example`
[INFO] [stdout]  --> src/hashmap_examples.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn hashmap_example() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `vector_example`
[INFO] [stdout]  --> src/vector_examples.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn vector_example() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.63s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/collections-79f4f84aff9d2dfd)
[INFO] running `Command { std: "docker" "inspect" "cc3bcd66252a280e4c00847e586da4a7cfc0ffa6038c0a233f631b3f4e3e99af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc3bcd66252a280e4c00847e586da4a7cfc0ffa6038c0a233f631b3f4e3e99af", kill_on_drop: false }`
[INFO] [stdout] cc3bcd66252a280e4c00847e586da4a7cfc0ffa6038c0a233f631b3f4e3e99af
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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=warn" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8f402f92c29f07a1949fbaef199200ffb5aa1079935534059f1cc58969b6778c
[INFO] running `Command { std: "docker" "start" "-a" "8f402f92c29f07a1949fbaef199200ffb5aa1079935534059f1cc58969b6778c", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `v1`
[INFO] [stderr]  --> src/vector_examples.rs:2:6
[INFO] [stderr]   |
[INFO] [stderr] 2 |     let v1: Vec<i32> = Vec::new();
[INFO] [stderr]   |         ^^ help: if this is intentional, prefix it with an underscore: `_v1`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `hashmap_example`
[INFO] [stderr]  --> src/hashmap_examples.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn hashmap_example() {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `vector_example`
[INFO] [stderr]  --> src/vector_examples.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn vector_example() {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `collections` (bin "collections" test) generated 3 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/collections-79f4f84aff9d2dfd)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8f402f92c29f07a1949fbaef199200ffb5aa1079935534059f1cc58969b6778c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f402f92c29f07a1949fbaef199200ffb5aa1079935534059f1cc58969b6778c", kill_on_drop: false }`
[INFO] [stdout] 8f402f92c29f07a1949fbaef199200ffb5aa1079935534059f1cc58969b6778c