[INFO] cloning repository https://github.com/hazzarust/concurrent_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hazzarust/concurrent_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhazzarust%2Fconcurrent_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhazzarust%2Fconcurrent_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a8a2d5c849fb51fb3f77b7418dc9121c66045cdb
[INFO] testing hazzarust/concurrent_rust against 1.98.0-beta.8+cargoflags=--release for beta-release-1.99-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhazzarust%2Fconcurrent_rust" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/hazzarust/concurrent_rust
[INFO] finished tweaking git repo https://github.com/hazzarust/concurrent_rust
[INFO] tweaked toml for git repo https://github.com/hazzarust/concurrent_rust written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/hazzarust/concurrent_rust on toolchain 1.98.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.98.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/hazzarust/concurrent_rust 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" "+1.98.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 11a494341143b8415c6f943beed64c19b04379b9439a72c7a38517c4f2107ce5
[INFO] running `Command { std: "docker" "start" "11a494341143b8415c6f943beed64c19b04379b9439a72c7a38517c4f2107ce5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "11a494341143b8415c6f943beed64c19b04379b9439a72c7a38517c4f2107ce5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "11a494341143b8415c6f943beed64c19b04379b9439a72c7a38517c4f2107ce5" "/opt/rustwide/cargo-home/bin/cargo" "+1.98.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "11a494341143b8415c6f943beed64c19b04379b9439a72c7a38517c4f2107ce5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "11a494341143b8415c6f943beed64c19b04379b9439a72c7a38517c4f2107ce5" "/opt/rustwide/cargo-home/bin/cargo" "+1.98.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling threads v0.1.0 (/opt/rustwide/workdir/basics)
[INFO] [stderr]    Compiling atomics v0.1.0 (/opt/rustwide/workdir/atomics)
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> basics/src/threads.rs:2:21
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{self, Read, Write};
[INFO] [stdout]   |                     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `threads::one`
[INFO] [stdout]  --> basics/src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use threads::one;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::threads::leak`
[INFO] [stdout]  --> basics/src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::threads::leak;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> basics/src/threads.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let y = numbers;
[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: function `one` is never used
[INFO] [stdout]  --> basics/src/threads.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn one(){
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `scoped_thread` is never used
[INFO] [stdout]   --> basics/src/threads.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn scoped_thread(){
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `leak` is never used
[INFO] [stdout]   --> basics/src/threads.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub fn leak(){
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `arc` is never used
[INFO] [stdout]   --> basics/src/threads.rs:73:8
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub fn arc(){
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.12s
[INFO] running `Command { std: "docker" "inspect" "11a494341143b8415c6f943beed64c19b04379b9439a72c7a38517c4f2107ce5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "11a494341143b8415c6f943beed64c19b04379b9439a72c7a38517c4f2107ce5" "/opt/rustwide/cargo-home/bin/cargo" "+1.98.0-beta.8" "test" "--frozen" "--no-run" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling atomics v0.1.0 (/opt/rustwide/workdir/atomics)
[INFO] [stderr]    Compiling threads v0.1.0 (/opt/rustwide/workdir/basics)
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> basics/src/threads.rs:2:21
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{self, Read, Write};
[INFO] [stdout]   |                     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `threads::one`
[INFO] [stdout]  --> basics/src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use threads::one;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::threads::leak`
[INFO] [stdout]  --> basics/src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::threads::leak;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> basics/src/threads.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let y = numbers;
[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: function `one` is never used
[INFO] [stdout]  --> basics/src/threads.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn one(){
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `scoped_thread` is never used
[INFO] [stdout]   --> basics/src/threads.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn scoped_thread(){
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `leak` is never used
[INFO] [stdout]   --> basics/src/threads.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub fn leak(){
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `arc` is never used
[INFO] [stdout]   --> basics/src/threads.rs:73:8
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub fn arc(){
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.18s
[INFO] running `Command { std: "docker" "inspect" "11a494341143b8415c6f943beed64c19b04379b9439a72c7a38517c4f2107ce5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "11a494341143b8415c6f943beed64c19b04379b9439a72c7a38517c4f2107ce5" "/opt/rustwide/cargo-home/bin/cargo" "+1.98.0-beta.8" "test" "--frozen" "--release", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr] warning: unused import: `Read`
[INFO] [stderr]  --> basics/src/threads.rs:2:21
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io::{self, Read, Write};
[INFO] [stderr]   |                     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `threads::one`
[INFO] [stderr]  --> basics/src/main.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use threads::one;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::threads::leak`
[INFO] [stderr]  --> basics/src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use crate::threads::leak;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]   --> basics/src/threads.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let y = numbers;
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `one` is never used
[INFO] [stderr]  --> basics/src/threads.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn one(){
[INFO] [stderr]   |        ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `scoped_thread` is never used
[INFO] [stderr]   --> basics/src/threads.rs:21:8
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub fn scoped_thread(){
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `leak` is never used
[INFO] [stderr]   --> basics/src/threads.rs:48:8
[INFO] [stderr]    |
[INFO] [stderr] 48 | pub fn leak(){
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `arc` is never used
[INFO] [stderr]   --> basics/src/threads.rs:73:8
[INFO] [stderr]    |
[INFO] [stderr] 73 | pub fn arc(){
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `threads` (bin "threads" test) generated 8 warnings (run `cargo fix --bin "threads" -p threads --tests` to apply 4 suggestions)
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/release/deps/atomics-c1710c53b01d8ea7)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/release/deps/threads-2db5f8359a2daac0)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests atomics
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "11a494341143b8415c6f943beed64c19b04379b9439a72c7a38517c4f2107ce5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11a494341143b8415c6f943beed64c19b04379b9439a72c7a38517c4f2107ce5", kill_on_drop: false }`
[INFO] [stdout] 11a494341143b8415c6f943beed64c19b04379b9439a72c7a38517c4f2107ce5