[INFO] cloning repository https://github.com/codeplay22/hashmapsinrust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/codeplay22/hashmapsinrust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcodeplay22%2Fhashmapsinrust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcodeplay22%2Fhashmapsinrust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 67bac19bd3aa8fdb937f989a5acfeee2f0cba391
[INFO] checking codeplay22/hashmapsinrust against try#e117153a45c546e883c1f91d82611775fcaeffe0 for pr-146470
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcodeplay22%2Fhashmapsinrust" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/codeplay22/hashmapsinrust
[INFO] finished tweaking git repo https://github.com/codeplay22/hashmapsinrust
[INFO] tweaked toml for git repo https://github.com/codeplay22/hashmapsinrust written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/codeplay22/hashmapsinrust on toolchain e117153a45c546e883c1f91d82611775fcaeffe0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e117153a45c546e883c1f91d82611775fcaeffe0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/codeplay22/hashmapsinrust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e117153a45c546e883c1f91d82611775fcaeffe0" "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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+e117153a45c546e883c1f91d82611775fcaeffe0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ae9621524dc3afed6496901ce3e13888b7bcdfef54b8092bfef07a2744bbf233
[INFO] running `Command { std: "docker" "start" "-a" "ae9621524dc3afed6496901ce3e13888b7bcdfef54b8092bfef07a2744bbf233", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ae9621524dc3afed6496901ce3e13888b7bcdfef54b8092bfef07a2744bbf233", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae9621524dc3afed6496901ce3e13888b7bcdfef54b8092bfef07a2744bbf233", kill_on_drop: false }`
[INFO] [stdout] ae9621524dc3afed6496901ce3e13888b7bcdfef54b8092bfef07a2744bbf233
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+e117153a45c546e883c1f91d82611775fcaeffe0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9e232f4bf5a304576183e5c3184d6c180b646c6c390fc7e0359cc23389cad527
[INFO] running `Command { std: "docker" "start" "-a" "9e232f4bf5a304576183e5c3184d6c180b646c6c390fc7e0359cc23389cad527", kill_on_drop: false }`
[INFO] [stderr]     Checking hashmapinrust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `MapNode` is never constructed
[INFO] [stdout]  --> src/main.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct MapNode<K, V> {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/main.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | impl<K, V> MapNode<K, V> {
[INFO] [stdout]   | ------------------------ associated function in this implementation
[INFO] [stdout] 8 |     fn new(key: K, value: V) -> Self {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `HashMap` is never constructed
[INFO] [stdout]   --> src/main.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct HashMap<K, V> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MapNode` is never constructed
[INFO] [stdout]  --> src/main.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct MapNode<K, V> {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/main.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | impl<K, V> MapNode<K, V> {
[INFO] [stdout]   | ------------------------ associated function in this implementation
[INFO] [stdout] 8 |     fn new(key: K, value: V) -> Self {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `HashMap` is never constructed
[INFO] [stdout]   --> src/main.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct HashMap<K, V> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/tresizemethod.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let mut y = a.take();
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/tresizemethod.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let mut v: Vec<i32> = vec![1, 2];
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/tresizemethod.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let mut y = a.take();
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/tresizemethod.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let mut y = a.take();
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/tresizemethod.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let mut v: Vec<i32> = vec![1, 2];
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/tresizemethod.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let mut v: Vec<i32> = vec![1, 2];
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/tresizemethod.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let mut y = a.take();
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/tresizemethod.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let mut v: Vec<i32> = vec![1, 2];
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/tresizemethod.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let mut s = String::from("hello world");
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/tresizemethod.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let mut s = String::from("hello world");
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "9e232f4bf5a304576183e5c3184d6c180b646c6c390fc7e0359cc23389cad527", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e232f4bf5a304576183e5c3184d6c180b646c6c390fc7e0359cc23389cad527", kill_on_drop: false }`
[INFO] [stdout] 9e232f4bf5a304576183e5c3184d6c180b646c6c390fc7e0359cc23389cad527
