[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 master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsdaigo%2Fcollections" "/workspace/builds/worker-63/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-63/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sdaigo/collections on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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-63/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--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-63/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fd5c92dc57ac4f6f637af323a8720d21ba00160c747ebf4dd00af250330947e9
[INFO] running `Command { std: "docker" "start" "-a" "fd5c92dc57ac4f6f637af323a8720d21ba00160c747ebf4dd00af250330947e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd5c92dc57ac4f6f637af323a8720d21ba00160c747ebf4dd00af250330947e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd5c92dc57ac4f6f637af323a8720d21ba00160c747ebf4dd00af250330947e9", kill_on_drop: false }`
[INFO] [stdout] fd5c92dc57ac4f6f637af323a8720d21ba00160c747ebf4dd00af250330947e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d7953ce01c744c9e95c89da71c14c0b2a4ef6b7ffa02abff7698667d23cde8a2
[INFO] running `Command { std: "docker" "start" "-a" "d7953ce01c744c9e95c89da71c14c0b2a4ef6b7ffa02abff7698667d23cde8a2", 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 0.84s
[INFO] running `Command { std: "docker" "inspect" "d7953ce01c744c9e95c89da71c14c0b2a4ef6b7ffa02abff7698667d23cde8a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7953ce01c744c9e95c89da71c14c0b2a4ef6b7ffa02abff7698667d23cde8a2", kill_on_drop: false }`
[INFO] [stdout] d7953ce01c744c9e95c89da71c14c0b2a4ef6b7ffa02abff7698667d23cde8a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4611bfe5c9e6069e38e2e1a1b3148e6216f1bad6a192b3869a2dc745554865e4
[INFO] running `Command { std: "docker" "start" "-a" "4611bfe5c9e6069e38e2e1a1b3148e6216f1bad6a192b3869a2dc745554865e4", 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 1.03s
[INFO] running `Command { std: "docker" "inspect" "4611bfe5c9e6069e38e2e1a1b3148e6216f1bad6a192b3869a2dc745554865e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4611bfe5c9e6069e38e2e1a1b3148e6216f1bad6a192b3869a2dc745554865e4", kill_on_drop: false }`
[INFO] [stdout] 4611bfe5c9e6069e38e2e1a1b3148e6216f1bad6a192b3869a2dc745554865e4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] cabe7658bc82f584168dd73d2bcd852584def96e54dfe882425cfb817f44d814
[INFO] running `Command { std: "docker" "start" "-a" "cabe7658bc82f584168dd73d2bcd852584def96e54dfe882425cfb817f44d814", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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 2.13s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/collections-fa45a099985a6cd1)
[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" "cabe7658bc82f584168dd73d2bcd852584def96e54dfe882425cfb817f44d814", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cabe7658bc82f584168dd73d2bcd852584def96e54dfe882425cfb817f44d814", kill_on_drop: false }`
[INFO] [stdout] cabe7658bc82f584168dd73d2bcd852584def96e54dfe882425cfb817f44d814