[INFO] updating cached repository jkurian/basic-web-server
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jkurian/basic-web-server
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jkurian/basic-web-server" "work/ex/beta-1.38-1/sources/1.37.0/gh/jkurian/basic-web-server"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/jkurian/basic-web-server'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jkurian/basic-web-server" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jkurian/basic-web-server"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jkurian/basic-web-server'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 80b3ed2849c4bda6af9307b4ac01d7c1b700afca
[INFO] sha for GitHub repo jkurian/basic-web-server: 80b3ed2849c4bda6af9307b4ac01d7c1b700afca
[INFO] validating manifest of jkurian/basic-web-server on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of jkurian/basic-web-server on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing jkurian/basic-web-server
[INFO] finished frobbing jkurian/basic-web-server
[INFO] frobbed toml for jkurian/basic-web-server written to work/ex/beta-1.38-1/sources/1.37.0/gh/jkurian/basic-web-server/Cargo.toml
[INFO] started frobbing jkurian/basic-web-server
[INFO] finished frobbing jkurian/basic-web-server
[INFO] frobbed toml for jkurian/basic-web-server written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jkurian/basic-web-server/Cargo.toml
[INFO] crate jkurian/basic-web-server already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing jkurian/basic-web-server against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jkurian/basic-web-server:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 03e7f63f1c0e2cf15dac0d55d74e7f9bac747cf46d37909c847d73bd20f0d0e1
[INFO] running `"docker" "start" "-a" "03e7f63f1c0e2cf15dac0d55d74e7f9bac747cf46d37909c847d73bd20f0d0e1"`
[INFO] [stderr]    Compiling hello v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/lib.rs:43:9
[INFO] [stderr]    |
[INFO] [stderr] 43 |       if(size <= 0) {
[INFO] [stderr]    |         ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/lib.rs:60:30
[INFO] [stderr]    |
[INFO] [stderr] 60 |     pub fn execute<F>(&self, f: F)
[INFO] [stderr]    |                              ^ help: consider prefixing with an underscore: `_f`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `workers`
[INFO] [stderr]   --> src/lib.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     workers: Vec<Worker>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `sender`
[INFO] [stderr]   --> src/lib.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     sender: mpsc::Sender<Job>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `id`
[INFO] [stderr]   --> src/lib.rs:15:3
[INFO] [stderr]    |
[INFO] [stderr] 15 |   id: usize,
[INFO] [stderr]    |   ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `thread`
[INFO] [stderr]   --> src/lib.rs:16:3
[INFO] [stderr]    |
[INFO] [stderr] 16 |   thread: thread::JoinHandle<()>
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: path statement with no effect
[INFO] [stderr]   --> src/lib.rs:24:7
[INFO] [stderr]    |
[INFO] [stderr] 24 |       receiver;
[INFO] [stderr]    |       ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(path_statements)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ThreadPoolError`
[INFO] [stderr]   --> src/bin/main.rs:17:13
[INFO] [stderr]    |
[INFO] [stderr] 17 |         Err(ThreadPoolError) => {
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_ThreadPoolError`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `ThreadPool` should have a snake case name
[INFO] [stderr]   --> src/bin/main.rs:16:12
[INFO] [stderr]    |
[INFO] [stderr] 16 |         Ok(ThreadPool) => ThreadPool,
[INFO] [stderr]    |            ^^^^^^^^^^ help: convert the identifier to snake case: `thread_pool`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `ThreadPoolError` should have a snake case name
[INFO] [stderr]   --> src/bin/main.rs:17:13
[INFO] [stderr]    |
[INFO] [stderr] 17 |         Err(ThreadPoolError) => {
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `thread_pool_error`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.87s
[INFO] running `"docker" "inspect" "03e7f63f1c0e2cf15dac0d55d74e7f9bac747cf46d37909c847d73bd20f0d0e1"`
[INFO] running `"docker" "rm" "-f" "03e7f63f1c0e2cf15dac0d55d74e7f9bac747cf46d37909c847d73bd20f0d0e1"`
[INFO] [stdout] 03e7f63f1c0e2cf15dac0d55d74e7f9bac747cf46d37909c847d73bd20f0d0e1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jkurian/basic-web-server:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] c831fd9096c6f1861c90420cee5cf77244e6158c9bbf915bc751ee52a1f8ee54
[INFO] running `"docker" "start" "-a" "c831fd9096c6f1861c90420cee5cf77244e6158c9bbf915bc751ee52a1f8ee54"`
[INFO] [stderr]    Compiling hello v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/lib.rs:43:9
[INFO] [stderr]    |
[INFO] [stderr] 43 |       if(size <= 0) {
[INFO] [stderr]    |         ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/lib.rs:60:30
[INFO] [stderr]    |
[INFO] [stderr] 60 |     pub fn execute<F>(&self, f: F)
[INFO] [stderr]    |                              ^ help: consider prefixing with an underscore: `_f`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `workers`
[INFO] [stderr]   --> src/lib.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     workers: Vec<Worker>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `sender`
[INFO] [stderr]   --> src/lib.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     sender: mpsc::Sender<Job>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `id`
[INFO] [stderr]   --> src/lib.rs:15:3
[INFO] [stderr]    |
[INFO] [stderr] 15 |   id: usize,
[INFO] [stderr]    |   ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `thread`
[INFO] [stderr]   --> src/lib.rs:16:3
[INFO] [stderr]    |
[INFO] [stderr] 16 |   thread: thread::JoinHandle<()>
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: path statement with no effect
[INFO] [stderr]   --> src/lib.rs:24:7
[INFO] [stderr]    |
[INFO] [stderr] 24 |       receiver;
[INFO] [stderr]    |       ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(path_statements)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ThreadPoolError`
[INFO] [stderr]   --> src/bin/main.rs:17:13
[INFO] [stderr]    |
[INFO] [stderr] 17 |         Err(ThreadPoolError) => {
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_ThreadPoolError`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `ThreadPool` should have a snake case name
[INFO] [stderr]   --> src/bin/main.rs:16:12
[INFO] [stderr]    |
[INFO] [stderr] 16 |         Ok(ThreadPool) => ThreadPool,
[INFO] [stderr]    |            ^^^^^^^^^^ help: convert the identifier to snake case: `thread_pool`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `ThreadPoolError` should have a snake case name
[INFO] [stderr]   --> src/bin/main.rs:17:13
[INFO] [stderr]    |
[INFO] [stderr] 17 |         Err(ThreadPoolError) => {
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `thread_pool_error`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.12s
[INFO] running `"docker" "inspect" "c831fd9096c6f1861c90420cee5cf77244e6158c9bbf915bc751ee52a1f8ee54"`
[INFO] running `"docker" "rm" "-f" "c831fd9096c6f1861c90420cee5cf77244e6158c9bbf915bc751ee52a1f8ee54"`
[INFO] [stdout] c831fd9096c6f1861c90420cee5cf77244e6158c9bbf915bc751ee52a1f8ee54
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jkurian/basic-web-server:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] e2005e84110c86e286e7e222ad62dd15e926f0fc943f7daa4259e4d6aeb71f10
[INFO] running `"docker" "start" "-a" "e2005e84110c86e286e7e222ad62dd15e926f0fc943f7daa4259e4d6aeb71f10"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/hello-be8e09f33eb7e08b
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running /opt/crater/target/debug/deps/main-900f5d4e9e31c927
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests hello
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "e2005e84110c86e286e7e222ad62dd15e926f0fc943f7daa4259e4d6aeb71f10"`
[INFO] running `"docker" "rm" "-f" "e2005e84110c86e286e7e222ad62dd15e926f0fc943f7daa4259e4d6aeb71f10"`
[INFO] [stdout] e2005e84110c86e286e7e222ad62dd15e926f0fc943f7daa4259e4d6aeb71f10