Dec 14 11:37:06.008 INFO testing CGQAQ/Rust_Learn against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 14 11:37:06.008 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-6/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +bd47d6825bf4090517549d33cfef10d3300b4a75-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 14 11:37:06.476 INFO [stdout] 5c43a8061f2d25b79c5bd3c8e0a0cd656b5ea3b39f0af41a718d38c16dbd711a
Dec 14 11:37:06.479 INFO running `"docker" "start" "-a" "5c43a8061f2d25b79c5bd3c8e0a0cd656b5ea3b39f0af41a718d38c16dbd711a"`
Dec 14 11:37:07.979 INFO [stderr] usermod: no changes
Dec 14 11:37:08.039 INFO [stderr] warning: An explicit [[bin]] section is specified in Cargo.toml which currently
Dec 14 11:37:08.039 INFO [stderr] disables Cargo from automatically inferring other binary targets.
Dec 14 11:37:08.039 INFO [stderr] This inference behavior will change in the Rust 2018 edition and the following
Dec 14 11:37:08.039 INFO [stderr] files will be included as a binary target:
Dec 14 11:37:08.039 INFO [stderr] 
Dec 14 11:37:08.039 INFO [stderr] * /source/src/main.rs
Dec 14 11:37:08.039 INFO [stderr] 
Dec 14 11:37:08.039 INFO [stderr] This is likely to break cargo build or cargo test as these files may not be
Dec 14 11:37:08.039 INFO [stderr] ready to be compiled as a binary target today. You can future-proof yourself
Dec 14 11:37:08.039 INFO [stderr] and disable this warning by adding `autobins = false` to your [package]
Dec 14 11:37:08.039 INFO [stderr] section. You may also move the files to a location where Cargo would not
Dec 14 11:37:08.039 INFO [stderr] automatically infer them to be a target, such as in subfolders.
Dec 14 11:37:08.039 INFO [stderr] 
Dec 14 11:37:08.039 INFO [stderr] For more information on this warning you can consult
Dec 14 11:37:08.039 INFO [stderr] https://github.com/rust-lang/cargo/issues/5330
Dec 14 11:37:08.039 INFO [stderr] warning: path `/source/src/main.rs` was erroneously implicitly accepted for binary `main`,
Dec 14 11:37:08.039 INFO [stderr] please set bin.path in Cargo.toml
Dec 14 11:37:08.059 INFO [stderr]    Compiling learn v0.1.0 (/source)
Dec 14 11:37:08.689 INFO [stderr] warning: variable does not need to be mutable
Dec 14 11:37:08.689 INFO [stderr]   --> src/bin/mthread.rs:11:9
Dec 14 11:37:08.689 INFO [stderr]    |
Dec 14 11:37:08.689 INFO [stderr] 11 |     let mut ptr = Arc::new(Mutex::new("hello world!".chars()));
Dec 14 11:37:08.689 INFO [stderr]    |         ----^^^
Dec 14 11:37:08.689 INFO [stderr]    |         |
Dec 14 11:37:08.689 INFO [stderr]    |         help: remove this `mut`
Dec 14 11:37:08.689 INFO [stderr]    |
Dec 14 11:37:08.689 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 14 11:37:08.689 INFO [stderr] 
Dec 14 11:37:08.689 INFO [stderr] warning: variable does not need to be mutable
Dec 14 11:37:08.689 INFO [stderr]   --> src/bin/mthread.rs:27:13
Dec 14 11:37:08.689 INFO [stderr]    |
Dec 14 11:37:08.689 INFO [stderr] 27 |         let mut ptr = ptr.clone();
Dec 14 11:37:08.689 INFO [stderr]    |             ----^^^
Dec 14 11:37:08.689 INFO [stderr]    |             |
Dec 14 11:37:08.689 INFO [stderr]    |             help: remove this `mut`
Dec 14 11:37:08.689 INFO [stderr] 
Dec 14 11:37:08.689 INFO [stderr] warning: variable does not need to be mutable
Dec 14 11:37:08.689 INFO [stderr]   --> src/bin/mthread.rs:29:13
Dec 14 11:37:08.689 INFO [stderr]    |
Dec 14 11:37:08.689 INFO [stderr] 29 |         let mut tx = tx.clone();
Dec 14 11:37:08.689 INFO [stderr]    |             ----^^
Dec 14 11:37:08.689 INFO [stderr]    |             |
Dec 14 11:37:08.689 INFO [stderr]    |             help: remove this `mut`
Dec 14 11:37:08.689 INFO [stderr] 
Dec 14 11:37:08.689 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 11:37:08.689 INFO [stderr]   --> src/bin/mthread.rs:20:21
Dec 14 11:37:08.689 INFO [stderr]    |
Dec 14 11:37:08.689 INFO [stderr] 20 |                     a.send(1);
Dec 14 11:37:08.689 INFO [stderr]    |                     ^^^^^^^^^^
Dec 14 11:37:08.689 INFO [stderr]    |
Dec 14 11:37:08.689 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 14 11:37:08.689 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 11:37:08.690 INFO [stderr] 
Dec 14 11:37:08.691 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 11:37:08.691 INFO [stderr]   --> src/bin/mthread.rs:34:17
Dec 14 11:37:08.691 INFO [stderr]    |
Dec 14 11:37:08.691 INFO [stderr] 34 |                 tx.send(d);
Dec 14 11:37:08.691 INFO [stderr]    |                 ^^^^^^^^^^^
Dec 14 11:37:08.691 INFO [stderr]    |
Dec 14 11:37:08.703 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 11:37:08.703 INFO [stderr] 
Dec 14 11:37:10.075 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.06s
Dec 14 11:37:10.086 INFO [stderr] su: No module specific data is present
Dec 14 11:37:10.631 INFO running `"docker" "inspect" "5c43a8061f2d25b79c5bd3c8e0a0cd656b5ea3b39f0af41a718d38c16dbd711a"`
Dec 14 11:37:10.963 INFO running `"docker" "rm" "-f" "5c43a8061f2d25b79c5bd3c8e0a0cd656b5ea3b39f0af41a718d38c16dbd711a"`
Dec 14 11:37:11.277 INFO [stdout] 5c43a8061f2d25b79c5bd3c8e0a0cd656b5ea3b39f0af41a718d38c16dbd711a
Dec 14 11:37:11.279 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-6/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen --no-run" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 14 11:37:11.696 INFO [stdout] e1ea0645858b55c3fcad3b840919602ee370849dad7d3b31d032b8bfcece611d
Dec 14 11:37:11.699 INFO running `"docker" "start" "-a" "e1ea0645858b55c3fcad3b840919602ee370849dad7d3b31d032b8bfcece611d"`
Dec 14 11:37:12.691 INFO [stderr] usermod: no changes
Dec 14 11:37:12.717 INFO [stderr] warning: An explicit [[bin]] section is specified in Cargo.toml which currently
Dec 14 11:37:12.717 INFO [stderr] disables Cargo from automatically inferring other binary targets.
Dec 14 11:37:12.717 INFO [stderr] This inference behavior will change in the Rust 2018 edition and the following
Dec 14 11:37:12.717 INFO [stderr] files will be included as a binary target:
Dec 14 11:37:12.717 INFO [stderr] 
Dec 14 11:37:12.717 INFO [stderr] * /source/src/main.rs
Dec 14 11:37:12.717 INFO [stderr] 
Dec 14 11:37:12.717 INFO [stderr] This is likely to break cargo build or cargo test as these files may not be
Dec 14 11:37:12.717 INFO [stderr] ready to be compiled as a binary target today. You can future-proof yourself
Dec 14 11:37:12.717 INFO [stderr] and disable this warning by adding `autobins = false` to your [package]
Dec 14 11:37:12.718 INFO [stderr] section. You may also move the files to a location where Cargo would not
Dec 14 11:37:12.718 INFO [stderr] automatically infer them to be a target, such as in subfolders.
Dec 14 11:37:12.718 INFO [stderr] 
Dec 14 11:37:12.718 INFO [stderr] For more information on this warning you can consult
Dec 14 11:37:12.718 INFO [stderr] https://github.com/rust-lang/cargo/issues/5330
Dec 14 11:37:12.718 INFO [stderr] warning: path `/source/src/main.rs` was erroneously implicitly accepted for binary `main`,
Dec 14 11:37:12.718 INFO [stderr] please set bin.path in Cargo.toml
Dec 14 11:37:12.719 INFO [stderr]    Compiling learn v0.1.0 (/source)
Dec 14 11:37:13.287 INFO [stderr] warning: variable does not need to be mutable
Dec 14 11:37:13.287 INFO [stderr]   --> src/bin/mthread.rs:11:9
Dec 14 11:37:13.287 INFO [stderr]    |
Dec 14 11:37:13.287 INFO [stderr] 11 |     let mut ptr = Arc::new(Mutex::new("hello world!".chars()));
Dec 14 11:37:13.287 INFO [stderr]    |         ----^^^
Dec 14 11:37:13.287 INFO [stderr]    |         |
Dec 14 11:37:13.287 INFO [stderr]    |         help: remove this `mut`
Dec 14 11:37:13.287 INFO [stderr]    |
Dec 14 11:37:13.287 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 14 11:37:13.287 INFO [stderr] 
Dec 14 11:37:13.287 INFO [stderr] warning: variable does not need to be mutable
Dec 14 11:37:13.287 INFO [stderr]   --> src/bin/mthread.rs:27:13
Dec 14 11:37:13.287 INFO [stderr]    |
Dec 14 11:37:13.287 INFO [stderr] 27 |         let mut ptr = ptr.clone();
Dec 14 11:37:13.287 INFO [stderr]    |             ----^^^
Dec 14 11:37:13.287 INFO [stderr]    |             |
Dec 14 11:37:13.287 INFO [stderr]    |             help: remove this `mut`
Dec 14 11:37:13.287 INFO [stderr] 
Dec 14 11:37:13.287 INFO [stderr] warning: variable does not need to be mutable
Dec 14 11:37:13.287 INFO [stderr]   --> src/bin/mthread.rs:29:13
Dec 14 11:37:13.287 INFO [stderr]    |
Dec 14 11:37:13.287 INFO [stderr] 29 |         let mut tx = tx.clone();
Dec 14 11:37:13.287 INFO [stderr]    |             ----^^
Dec 14 11:37:13.287 INFO [stderr]    |             |
Dec 14 11:37:13.287 INFO [stderr]    |             help: remove this `mut`
Dec 14 11:37:13.287 INFO [stderr] 
Dec 14 11:37:13.287 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 11:37:13.287 INFO [stderr]   --> src/bin/mthread.rs:20:21
Dec 14 11:37:13.287 INFO [stderr]    |
Dec 14 11:37:13.287 INFO [stderr] 20 |                     a.send(1);
Dec 14 11:37:13.287 INFO [stderr]    |                     ^^^^^^^^^^
Dec 14 11:37:13.287 INFO [stderr]    |
Dec 14 11:37:13.287 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 14 11:37:13.287 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 11:37:13.287 INFO [stderr] 
Dec 14 11:37:13.287 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 11:37:13.287 INFO [stderr]   --> src/bin/mthread.rs:34:17
Dec 14 11:37:13.287 INFO [stderr]    |
Dec 14 11:37:13.287 INFO [stderr] 34 |                 tx.send(d);
Dec 14 11:37:13.287 INFO [stderr]    |                 ^^^^^^^^^^^
Dec 14 11:37:13.287 INFO [stderr]    |
Dec 14 11:37:13.287 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 11:37:13.287 INFO [stderr] 
Dec 14 11:37:13.546 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.83s
Dec 14 11:37:13.548 INFO [stderr] su: No module specific data is present
Dec 14 11:37:13.972 INFO running `"docker" "inspect" "e1ea0645858b55c3fcad3b840919602ee370849dad7d3b31d032b8bfcece611d"`
Dec 14 11:37:14.072 INFO running `"docker" "rm" "-f" "e1ea0645858b55c3fcad3b840919602ee370849dad7d3b31d032b8bfcece611d"`
Dec 14 11:37:14.151 INFO [stdout] e1ea0645858b55c3fcad3b840919602ee370849dad7d3b31d032b8bfcece611d
Dec 14 11:37:14.153 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-6/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 14 11:37:14.343 INFO [stdout] f74988a007b61a5c278a615a41dbded4d0f14a5f08bdca74ef21213c29558887
Dec 14 11:37:14.345 INFO running `"docker" "start" "-a" "f74988a007b61a5c278a615a41dbded4d0f14a5f08bdca74ef21213c29558887"`
Dec 14 11:37:14.708 INFO [stderr] usermod: no changes
Dec 14 11:37:14.732 INFO [stderr] warning: An explicit [[bin]] section is specified in Cargo.toml which currently
Dec 14 11:37:14.732 INFO [stderr] disables Cargo from automatically inferring other binary targets.
Dec 14 11:37:14.732 INFO [stderr] This inference behavior will change in the Rust 2018 edition and the following
Dec 14 11:37:14.732 INFO [stderr] files will be included as a binary target:
Dec 14 11:37:14.732 INFO [stderr] 
Dec 14 11:37:14.732 INFO [stderr] * /source/src/main.rs
Dec 14 11:37:14.732 INFO [stderr] 
Dec 14 11:37:14.732 INFO [stderr] This is likely to break cargo build or cargo test as these files may not be
Dec 14 11:37:14.732 INFO [stderr] ready to be compiled as a binary target today. You can future-proof yourself
Dec 14 11:37:14.732 INFO [stderr] and disable this warning by adding `autobins = false` to your [package]
Dec 14 11:37:14.732 INFO [stderr] section. You may also move the files to a location where Cargo would not
Dec 14 11:37:14.732 INFO [stderr] automatically infer them to be a target, such as in subfolders.
Dec 14 11:37:14.732 INFO [stderr] 
Dec 14 11:37:14.732 INFO [stderr] For more information on this warning you can consult
Dec 14 11:37:14.732 INFO [stderr] https://github.com/rust-lang/cargo/issues/5330
Dec 14 11:37:14.732 INFO [stderr] warning: path `/source/src/main.rs` was erroneously implicitly accepted for binary `main`,
Dec 14 11:37:14.732 INFO [stderr] please set bin.path in Cargo.toml
Dec 14 11:37:14.733 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
Dec 14 11:37:14.733 INFO [stderr]      Running /target/debug/deps/demo-80284c157ed2bf64
Dec 14 11:37:14.738 INFO [stdout] 
Dec 14 11:37:14.738 INFO [stdout] running 0 tests
Dec 14 11:37:14.738 INFO [stdout] 
Dec 14 11:37:14.738 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 14 11:37:14.738 INFO [stdout] 
Dec 14 11:37:14.738 INFO [stderr]      Running /target/debug/deps/main-12a3110638db137b
Dec 14 11:37:14.740 INFO [stdout] 
Dec 14 11:37:14.740 INFO [stdout] running 0 tests
Dec 14 11:37:14.740 INFO [stdout] 
Dec 14 11:37:14.740 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 14 11:37:14.740 INFO [stdout] 
Dec 14 11:37:14.740 INFO [stderr]      Running /target/debug/deps/mthread-1e5e38e5f954019d
Dec 14 11:37:14.741 INFO [stdout] 
Dec 14 11:37:14.741 INFO [stdout] running 0 tests
Dec 14 11:37:14.741 INFO [stdout] 
Dec 14 11:37:14.741 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 14 11:37:14.741 INFO [stdout] 
Dec 14 11:37:14.743 INFO [stderr] su: No module specific data is present
Dec 14 11:37:14.984 INFO running `"docker" "inspect" "f74988a007b61a5c278a615a41dbded4d0f14a5f08bdca74ef21213c29558887"`
Dec 14 11:37:15.092 INFO running `"docker" "rm" "-f" "f74988a007b61a5c278a615a41dbded4d0f14a5f08bdca74ef21213c29558887"`
Dec 14 11:37:15.295 INFO [stdout] f74988a007b61a5c278a615a41dbded4d0f14a5f08bdca74ef21213c29558887