[INFO] fetching crate study13 0.1.0...
[INFO] testing study13-0.1.0 against master#562dee4820c458d823175268e41601d4c060588a for pr-154210-2
[INFO] extracting crate study13 0.1.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate study13 0.1.0
[INFO] finished tweaking crates.io crate study13 0.1.0
[INFO] tweaked toml for crates.io crate study13 0.1.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate study13 0.1.0 on toolchain 562dee4820c458d823175268e41601d4c060588a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate study13 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" "+562dee4820c458d823175268e41601d4c060588a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 10f48f257d26453bb4261ea551b381252857c7b99dbf74600f1335c7f6614505
[INFO] running `Command { std: "docker" "start" "-a" "10f48f257d26453bb4261ea551b381252857c7b99dbf74600f1335c7f6614505", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "10f48f257d26453bb4261ea551b381252857c7b99dbf74600f1335c7f6614505", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10f48f257d26453bb4261ea551b381252857c7b99dbf74600f1335c7f6614505", kill_on_drop: false }`
[INFO] [stdout] 10f48f257d26453bb4261ea551b381252857c7b99dbf74600f1335c7f6614505
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] be7cf392200d044274a24453031566342238c8af17f726ddfa888ea41ae16c2c
[INFO] running `Command { std: "docker" "start" "-a" "be7cf392200d044274a24453031566342238c8af17f726ddfa888ea41ae16c2c", kill_on_drop: false }`
[INFO] [stderr]    Compiling study13 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `simu` is never used
[INFO] [stdout]  --> src/main.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn simu(i:u32) -> u32 {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cacher` is never constructed
[INFO] [stdout]   --> src/main.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct Cacher<T>
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `value` are never used
[INFO] [stdout]   --> src/main.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | / impl<T> Cacher<T>
[INFO] [stdout] 45 | |     where T: Fn(u32)->u32
[INFO] [stdout]    | |_________________________- associated items in this implementation
[INFO] [stdout] 46 |   {
[INFO] [stdout] 47 |       fn new(cal:T)->Cacher<T>{
[INFO] [stdout]    |          ^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |       fn value(&mut self,arg:u32)->u32{
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Counter` is never constructed
[INFO] [stdout]   --> src/main.rs:68:8
[INFO] [stdout]    |
[INFO] [stdout] 68 | struct Counter {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/main.rs:73:8
[INFO] [stdout]    |
[INFO] [stdout] 72 | impl Counter {
[INFO] [stdout]    | ------------ associated function in this implementation
[INFO] [stdout] 73 |     fn new() -> Counter {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `Command { std: "docker" "inspect" "be7cf392200d044274a24453031566342238c8af17f726ddfa888ea41ae16c2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be7cf392200d044274a24453031566342238c8af17f726ddfa888ea41ae16c2c", kill_on_drop: false }`
[INFO] [stdout] be7cf392200d044274a24453031566342238c8af17f726ddfa888ea41ae16c2c
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2504f39b355f0df7af3a13f768f1138f9112018f7bf5acca6aa3ef9929d11f11
[INFO] running `Command { std: "docker" "start" "-a" "2504f39b355f0df7af3a13f768f1138f9112018f7bf5acca6aa3ef9929d11f11", kill_on_drop: false }`
[INFO] [stderr]    Compiling study13 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `v2`
[INFO] [stdout]    --> src/main.rs:105:13
[INFO] [stdout]     |
[INFO] [stdout] 105 |         let v2: Vec<_> = v1.iter().map(|x| x+1).collect();
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_v2`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `simu` is never used
[INFO] [stdout]  --> src/main.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn simu(i:u32) -> u32 {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cacher` is never constructed
[INFO] [stdout]   --> src/main.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct Cacher<T>
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `value` are never used
[INFO] [stdout]   --> src/main.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | / impl<T> Cacher<T>
[INFO] [stdout] 45 | |     where T: Fn(u32)->u32
[INFO] [stdout]    | |_________________________- associated items in this implementation
[INFO] [stdout] 46 |   {
[INFO] [stdout] 47 |       fn new(cal:T)->Cacher<T>{
[INFO] [stdout]    |          ^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |       fn value(&mut self,arg:u32)->u32{
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "2504f39b355f0df7af3a13f768f1138f9112018f7bf5acca6aa3ef9929d11f11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2504f39b355f0df7af3a13f768f1138f9112018f7bf5acca6aa3ef9929d11f11", kill_on_drop: false }`
[INFO] [stdout] 2504f39b355f0df7af3a13f768f1138f9112018f7bf5acca6aa3ef9929d11f11
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7b1100ea986e3306eda880b58413c77e5a04835d6354fe143acba2449d6c9c59
[INFO] running `Command { std: "docker" "start" "-a" "7b1100ea986e3306eda880b58413c77e5a04835d6354fe143acba2449d6c9c59", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `v2`
[INFO] [stderr]    --> src/main.rs:105:13
[INFO] [stderr]     |
[INFO] [stderr] 105 |         let v2: Vec<_> = v1.iter().map(|x| x+1).collect();
[INFO] [stderr]     |             ^^ help: if this is intentional, prefix it with an underscore: `_v2`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `simu` is never used
[INFO] [stderr]  --> src/main.rs:4:4
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn simu(i:u32) -> u32 {
[INFO] [stderr]   |    ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Cacher` is never constructed
[INFO] [stderr]   --> src/main.rs:37:8
[INFO] [stderr]    |
[INFO] [stderr] 37 | struct Cacher<T>
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new` and `value` are never used
[INFO] [stderr]   --> src/main.rs:47:8
[INFO] [stderr]    |
[INFO] [stderr] 44 | / impl<T> Cacher<T>
[INFO] [stderr] 45 | |     where T: Fn(u32)->u32
[INFO] [stderr]    | |_________________________- associated items in this implementation
[INFO] [stderr] 46 |   {
[INFO] [stderr] 47 |       fn new(cal:T)->Cacher<T>{
[INFO] [stderr]    |          ^^^
[INFO] [stderr] ...
[INFO] [stderr] 54 |       fn value(&mut self,arg:u32)->u32{
[INFO] [stderr]    |          ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `study13` (bin "study13" test) generated 4 warnings (run `cargo fix --bin "study13" -p study13 --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/study13-d863260f5c680fd2)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test mytest::test1 ... ok
[INFO] [stdout] test mytest::test2 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7b1100ea986e3306eda880b58413c77e5a04835d6354fe143acba2449d6c9c59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b1100ea986e3306eda880b58413c77e5a04835d6354fe143acba2449d6c9c59", kill_on_drop: false }`
[INFO] [stdout] 7b1100ea986e3306eda880b58413c77e5a04835d6354fe143acba2449d6c9c59