[INFO] fetching crate minigrep_dqy 0.1.0...
[INFO] building minigrep_dqy-0.1.0 against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] extracting crate minigrep_dqy 0.1.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate minigrep_dqy 0.1.0
[INFO] finished tweaking crates.io crate minigrep_dqy 0.1.0
[INFO] tweaked toml for crates.io crate minigrep_dqy 0.1.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate minigrep_dqy 0.1.0 on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate minigrep_dqy 0.1.0 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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 48ad40e88bfe881dd6b08069d9643006e85f4e055c55f37714af8f7d0ca765bd
[INFO] running `Command { std: "docker" "start" "-a" "48ad40e88bfe881dd6b08069d9643006e85f4e055c55f37714af8f7d0ca765bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "48ad40e88bfe881dd6b08069d9643006e85f4e055c55f37714af8f7d0ca765bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48ad40e88bfe881dd6b08069d9643006e85f4e055c55f37714af8f7d0ca765bd", kill_on_drop: false }`
[INFO] [stdout] 48ad40e88bfe881dd6b08069d9643006e85f4e055c55f37714af8f7d0ca765bd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9831f1c005dcda6f01975896912c8dfb7a51f325932bea9f21cbe98bcc8c0c21
[INFO] running `Command { std: "docker" "start" "-a" "9831f1c005dcda6f01975896912c8dfb7a51f325932bea9f21cbe98bcc8c0c21", kill_on_drop: false }`
[INFO] [stderr]    Compiling minigrep_dqy v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `expensive_closure`
[INFO] [stdout]   --> src/main.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |     let expensive_closure = |num: i32| {
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expensive_closure`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fun`
[INFO] [stdout]   --> src/main.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |     let fun = |x: String| x;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_fun`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cacher` is never constructed
[INFO] [stdout]  --> src/main.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct Cacher<T>
[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 items `new` and `value` are never used
[INFO] [stdout]   --> src/main.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl<T> Cacher<T> where T: Fn(i32) -> i32 {
[INFO] [stdout]    | ----------------------------------------- associated items in this implementation
[INFO] [stdout] 16 |     fn new(calculation: T) -> Cacher<T> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 23 |     fn value(&mut self, arg: i32) -> i32 {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [optimized + debuginfo] target(s) in 0.80s
[INFO] running `Command { std: "docker" "inspect" "9831f1c005dcda6f01975896912c8dfb7a51f325932bea9f21cbe98bcc8c0c21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9831f1c005dcda6f01975896912c8dfb7a51f325932bea9f21cbe98bcc8c0c21", kill_on_drop: false }`
[INFO] [stdout] 9831f1c005dcda6f01975896912c8dfb7a51f325932bea9f21cbe98bcc8c0c21
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 044e50ca8dbcf41ab396543fd282635d3e3236d83846668cee45b4241c69a128
[INFO] running `Command { std: "docker" "start" "-a" "044e50ca8dbcf41ab396543fd282635d3e3236d83846668cee45b4241c69a128", kill_on_drop: false }`
[INFO] [stderr]    Compiling minigrep_dqy v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `expensive_closure`
[INFO] [stdout]   --> src/main.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |     let expensive_closure = |num: i32| {
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expensive_closure`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fun`
[INFO] [stdout]   --> src/main.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |     let fun = |x: String| x;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_fun`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cacher` is never constructed
[INFO] [stdout]  --> src/main.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct Cacher<T>
[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 items `new` and `value` are never used
[INFO] [stdout]   --> src/main.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl<T> Cacher<T> where T: Fn(i32) -> i32 {
[INFO] [stdout]    | ----------------------------------------- associated items in this implementation
[INFO] [stdout] 16 |     fn new(calculation: T) -> Cacher<T> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 23 |     fn value(&mut self, arg: i32) -> i32 {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [optimized + debuginfo] target(s) in 0.55s
[INFO] running `Command { std: "docker" "inspect" "044e50ca8dbcf41ab396543fd282635d3e3236d83846668cee45b4241c69a128", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "044e50ca8dbcf41ab396543fd282635d3e3236d83846668cee45b4241c69a128", kill_on_drop: false }`
[INFO] [stdout] 044e50ca8dbcf41ab396543fd282635d3e3236d83846668cee45b4241c69a128