[INFO] fetching crate study13 0.1.0...
[INFO] testing study13-0.1.0 against 1.91.0 for beta-1.92-2
[INFO] extracting crate study13 0.1.0 into /workspace/builds/worker-1-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-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate study13 0.1.0 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "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" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e5b269fd7e9db36bd356699d4e9baa7eabe7bb69d59875327f0f1c376bec426a
[INFO] running `Command { std: "docker" "start" "-a" "e5b269fd7e9db36bd356699d4e9baa7eabe7bb69d59875327f0f1c376bec426a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e5b269fd7e9db36bd356699d4e9baa7eabe7bb69d59875327f0f1c376bec426a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5b269fd7e9db36bd356699d4e9baa7eabe7bb69d59875327f0f1c376bec426a", kill_on_drop: false }`
[INFO] [stdout] e5b269fd7e9db36bd356699d4e9baa7eabe7bb69d59875327f0f1c376bec426a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1db6c28b2f11bf2154fa38daedcb5812b19b3cc00864badb630b06aa0bfa1cb4
[INFO] running `Command { std: "docker" "start" "-a" "1db6c28b2f11bf2154fa38daedcb5812b19b3cc00864badb630b06aa0bfa1cb4", 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 0.39s
[INFO] running `Command { std: "docker" "inspect" "1db6c28b2f11bf2154fa38daedcb5812b19b3cc00864badb630b06aa0bfa1cb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1db6c28b2f11bf2154fa38daedcb5812b19b3cc00864badb630b06aa0bfa1cb4", kill_on_drop: false }`
[INFO] [stdout] 1db6c28b2f11bf2154fa38daedcb5812b19b3cc00864badb630b06aa0bfa1cb4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.91.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 293e20e75bdad43c6d2d983f3ead8f10898470613471bd5df1838d4f267a0300
[INFO] running `Command { std: "docker" "start" "-a" "293e20e75bdad43c6d2d983f3ead8f10898470613471bd5df1838d4f267a0300", 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 0.31s
[INFO] running `Command { std: "docker" "inspect" "293e20e75bdad43c6d2d983f3ead8f10898470613471bd5df1838d4f267a0300", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "293e20e75bdad43c6d2d983f3ead8f10898470613471bd5df1838d4f267a0300", kill_on_drop: false }`
[INFO] [stdout] 293e20e75bdad43c6d2d983f3ead8f10898470613471bd5df1838d4f267a0300
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.91.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b16a061dff8860f31899b0ff8d2ef5769cb62ac57969258f56147385d890647c
[INFO] running `Command { std: "docker" "start" "-a" "b16a061dff8860f31899b0ff8d2ef5769cb62ac57969258f56147385d890647c", 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
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/study13-294cd62f5472c9a9)
[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 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b16a061dff8860f31899b0ff8d2ef5769cb62ac57969258f56147385d890647c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b16a061dff8860f31899b0ff8d2ef5769cb62ac57969258f56147385d890647c", kill_on_drop: false }`
[INFO] [stdout] b16a061dff8860f31899b0ff8d2ef5769cb62ac57969258f56147385d890647c