[INFO] fetching crate over-engineered-fizzbuzz 0.1.1...
[INFO] building over-engineered-fizzbuzz-0.1.1 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate over-engineered-fizzbuzz 0.1.1 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate over-engineered-fizzbuzz 0.1.1
[INFO] finished tweaking crates.io crate over-engineered-fizzbuzz 0.1.1
[INFO] tweaked toml for crates.io crate over-engineered-fizzbuzz 0.1.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate over-engineered-fizzbuzz 0.1.1 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate over-engineered-fizzbuzz 0.1.1 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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "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-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e1a755d91e934efc5554383413caf20ce3a1eddced6be948a4a9eb15528a1794
[INFO] running `Command { std: "docker" "start" "-a" "e1a755d91e934efc5554383413caf20ce3a1eddced6be948a4a9eb15528a1794", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e1a755d91e934efc5554383413caf20ce3a1eddced6be948a4a9eb15528a1794", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1a755d91e934efc5554383413caf20ce3a1eddced6be948a4a9eb15528a1794", kill_on_drop: false }`
[INFO] [stdout] e1a755d91e934efc5554383413caf20ce3a1eddced6be948a4a9eb15528a1794
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ebc808f0abfea6129b5e0b9819e0812eba265f6d9f1282df27758aa072058662
[INFO] running `Command { std: "docker" "start" "-a" "ebc808f0abfea6129b5e0b9819e0812eba265f6d9f1282df27758aa072058662", kill_on_drop: false }`
[INFO] [stderr]    Compiling over-engineered-fizzbuzz v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `tuple` is never used
[INFO] [stdout]   --> src/fizzbuzz.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl Param {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 20 |     pub fn tuple(self) -> (String, i32) {
[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 `compute_iter`, `empty`, and `params` are never used
[INFO] [stdout]    --> src/fizzbuzz.rs:87:12
[INFO] [stdout]     |
[INFO] [stdout]  67 | impl FizzBuzz {
[INFO] [stdout]     | ------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  87 |     pub fn compute_iter<I: Iterator<Item = i32>>(&self, iter: I) -> Vec<String> {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 100 |     pub fn empty() -> Self {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 112 |     pub fn params(&self) -> Vec<(String, i32)> {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `fizzbuzz` is never used
[INFO] [stdout]    --> src/fizzbuzz.rs:212:8
[INFO] [stdout]     |
[INFO] [stdout] 203 | pub trait FizzBuzzed<I> {
[INFO] [stdout]     |           ---------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 212 |     fn fizzbuzz(self) -> FizzBuzzIter<I>;
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `Command { std: "docker" "inspect" "ebc808f0abfea6129b5e0b9819e0812eba265f6d9f1282df27758aa072058662", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebc808f0abfea6129b5e0b9819e0812eba265f6d9f1282df27758aa072058662", kill_on_drop: false }`
[INFO] [stdout] ebc808f0abfea6129b5e0b9819e0812eba265f6d9f1282df27758aa072058662
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 84e1aa655bc3b7638e5a21d02b01daf745b3eededc983ef3aaa3b2e798278cba
[INFO] running `Command { std: "docker" "start" "-a" "84e1aa655bc3b7638e5a21d02b01daf745b3eededc983ef3aaa3b2e798278cba", kill_on_drop: false }`
[INFO] [stderr]    Compiling over-engineered-fizzbuzz v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `tuple` is never used
[INFO] [stdout]   --> src/fizzbuzz.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl Param {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 20 |     pub fn tuple(self) -> (String, i32) {
[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 `compute_iter`, `empty`, and `params` are never used
[INFO] [stdout]    --> src/fizzbuzz.rs:87:12
[INFO] [stdout]     |
[INFO] [stdout]  67 | impl FizzBuzz {
[INFO] [stdout]     | ------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  87 |     pub fn compute_iter<I: Iterator<Item = i32>>(&self, iter: I) -> Vec<String> {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 100 |     pub fn empty() -> Self {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 112 |     pub fn params(&self) -> Vec<(String, i32)> {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `fizzbuzz` is never used
[INFO] [stdout]    --> src/fizzbuzz.rs:212:8
[INFO] [stdout]     |
[INFO] [stdout] 203 | pub trait FizzBuzzed<I> {
[INFO] [stdout]     |           ---------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 212 |     fn fizzbuzz(self) -> FizzBuzzIter<I>;
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "84e1aa655bc3b7638e5a21d02b01daf745b3eededc983ef3aaa3b2e798278cba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84e1aa655bc3b7638e5a21d02b01daf745b3eededc983ef3aaa3b2e798278cba", kill_on_drop: false }`
[INFO] [stdout] 84e1aa655bc3b7638e5a21d02b01daf745b3eededc983ef3aaa3b2e798278cba