[INFO] updating cached repository daogangtang/learn-tokio [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/daogangtang/learn-tokio [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/daogangtang/learn-tokio" "work/ex/beta-1.37-6/sources/1.36.0/gh/daogangtang/learn-tokio"` [INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/daogangtang/learn-tokio'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/daogangtang/learn-tokio" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/daogangtang/learn-tokio"` [INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/daogangtang/learn-tokio'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 98b13be0e474ffb1b6a4f84b3e9caa91d100296a [INFO] sha for GitHub repo daogangtang/learn-tokio: 98b13be0e474ffb1b6a4f84b3e9caa91d100296a [INFO] validating manifest of daogangtang/learn-tokio on toolchain 1.36.0 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of daogangtang/learn-tokio on toolchain beta-2019-07-23 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing daogangtang/learn-tokio [INFO] finished frobbing daogangtang/learn-tokio [INFO] frobbed toml for daogangtang/learn-tokio written to work/ex/beta-1.37-6/sources/1.36.0/gh/daogangtang/learn-tokio/Cargo.toml [INFO] started frobbing daogangtang/learn-tokio [INFO] finished frobbing daogangtang/learn-tokio [INFO] frobbed toml for daogangtang/learn-tokio written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/daogangtang/learn-tokio/Cargo.toml [INFO] crate daogangtang/learn-tokio already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing daogangtang/learn-tokio against 1.36.0 for beta-1.37-6 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/daogangtang/learn-tokio:/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" "+1.36.0" "build" "--frozen"` [INFO] [stdout] 6b0143c24126cb1bf8c8f864647e11ba9b82dbbe2dc4f1f0a33a1b0b43f4ea11 [INFO] running `"docker" "start" "-a" "6b0143c24126cb1bf8c8f864647e11ba9b82dbbe2dc4f1f0a33a1b0b43f4ea11"` [INFO] [stderr] Compiling crossbeam-epoch v0.5.2 [INFO] [stderr] Compiling parking_lot_core v0.3.1 [INFO] [stderr] Compiling crossbeam-deque v0.6.1 [INFO] [stderr] Compiling parking_lot v0.6.4 [INFO] [stderr] Compiling tokio-threadpool v0.1.8 [INFO] [stderr] Compiling tokio-reactor v0.1.6 [INFO] [stderr] Compiling tokio-tcp v0.1.2 [INFO] [stderr] Compiling tokio-udp v0.1.2 [INFO] [stderr] Compiling tokio-uds v0.2.3 [INFO] [stderr] Compiling tokio-fs v0.1.4 [INFO] [stderr] Compiling tokio v0.1.11 [INFO] [stderr] Compiling learn-tokio0 v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused import: `tokio::io` [INFO] [stderr] --> src/tcp_server.rs:5:5 [INFO] [stderr] | [INFO] [stderr] 5 | use tokio::io; [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `futures::try_ready` [INFO] [stderr] --> src/concurrent_send_recv2.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | use futures::try_ready; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `tokio::prelude` [INFO] [stderr] --> src/tcp_server.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | use tokio::prelude::*; [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `e` [INFO] [stderr] --> src/tcp_server.rs:37:31 [INFO] [stderr] | [INFO] [stderr] 37 | .map_err(|e| std::io::Error::new(std::io::ErrorKind::Other, "oh no!")) [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_e` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `futures::try_ready` [INFO] [stderr] --> src/concurrent_send_recv.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | use futures::try_ready; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `e` [INFO] [stderr] --> src/tcp_server3.rs:29:31 [INFO] [stderr] | [INFO] [stderr] 29 | .map_err(|e| std::io::Error::new(std::io::ErrorKind::Other, "oh no!")) [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_e` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `stdout` [INFO] [stderr] --> src/tcp_client.rs:12:13 [INFO] [stderr] | [INFO] [stderr] 12 | let mut stdout = io::stdout(); [INFO] [stderr] | ^^^^^^ help: consider prefixing with an underscore: `_stdout` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/tcp_client.rs:12:9 [INFO] [stderr] | [INFO] [stderr] 12 | let mut stdout = io::stdout(); [INFO] [stderr] | ----^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_mut)] on by default [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 41.71s [INFO] running `"docker" "inspect" "6b0143c24126cb1bf8c8f864647e11ba9b82dbbe2dc4f1f0a33a1b0b43f4ea11"` [INFO] running `"docker" "rm" "-f" "6b0143c24126cb1bf8c8f864647e11ba9b82dbbe2dc4f1f0a33a1b0b43f4ea11"` [INFO] [stdout] 6b0143c24126cb1bf8c8f864647e11ba9b82dbbe2dc4f1f0a33a1b0b43f4ea11 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/daogangtang/learn-tokio:/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" "+1.36.0" "test" "--frozen" "--no-run"` [INFO] [stdout] 2164f6cc12c1f892b58025b8d9cecf6322822adf99e0fd396d101dbb46d814ef [INFO] running `"docker" "start" "-a" "2164f6cc12c1f892b58025b8d9cecf6322822adf99e0fd396d101dbb46d814ef"` [INFO] [stderr] Compiling learn-tokio0 v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused import: `tokio::io` [INFO] [stderr] --> src/tcp_server.rs:5:5 [INFO] [stderr] | [INFO] [stderr] 5 | use tokio::io; [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `tokio::prelude` [INFO] [stderr] --> src/tcp_server.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | use tokio::prelude::*; [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `e` [INFO] [stderr] --> src/tcp_server.rs:37:31 [INFO] [stderr] | [INFO] [stderr] 37 | .map_err(|e| std::io::Error::new(std::io::ErrorKind::Other, "oh no!")) [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_e` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `e` [INFO] [stderr] --> src/tcp_server3.rs:29:31 [INFO] [stderr] | [INFO] [stderr] 29 | .map_err(|e| std::io::Error::new(std::io::ErrorKind::Other, "oh no!")) [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_e` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `stdout` [INFO] [stderr] --> src/tcp_client.rs:12:13 [INFO] [stderr] | [INFO] [stderr] 12 | let mut stdout = io::stdout(); [INFO] [stderr] | ^^^^^^ help: consider prefixing with an underscore: `_stdout` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/tcp_client.rs:12:9 [INFO] [stderr] | [INFO] [stderr] 12 | let mut stdout = io::stdout(); [INFO] [stderr] | ----^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_mut)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `futures::try_ready` [INFO] [stderr] --> src/concurrent_send_recv2.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | use futures::try_ready; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `futures::try_ready` [INFO] [stderr] --> src/concurrent_send_recv.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | use futures::try_ready; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 11.57s [INFO] running `"docker" "inspect" "2164f6cc12c1f892b58025b8d9cecf6322822adf99e0fd396d101dbb46d814ef"` [INFO] running `"docker" "rm" "-f" "2164f6cc12c1f892b58025b8d9cecf6322822adf99e0fd396d101dbb46d814ef"` [INFO] [stdout] 2164f6cc12c1f892b58025b8d9cecf6322822adf99e0fd396d101dbb46d814ef [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/daogangtang/learn-tokio:/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" "+1.36.0" "test" "--frozen"` [INFO] [stdout] 9c0d2898cd1f36c296b211b719e93f7b819eac3e2c6087a971d195d10e96208a [INFO] running `"docker" "start" "-a" "9c0d2898cd1f36c296b211b719e93f7b819eac3e2c6087a971d195d10e96208a"` [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.15s [INFO] [stderr] Running /opt/crater/target/debug/deps/concurrent_interval_print-dbee2187b3079393 [INFO] [stdout] [INFO] [stderr] Running /opt/crater/target/debug/deps/concurrent_send_recv-c9388db3426e8674 [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] [stderr] Running /opt/crater/target/debug/deps/concurrent_send_recv2-879e7bf0de1543e1 [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] [stderr] Running /opt/crater/target/debug/deps/delay_print-ce1757989ac725f9 [INFO] [stderr] Running /opt/crater/target/debug/deps/delay_seq_print-f105f5552bd8bbdb [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] [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] [stderr] Running /opt/crater/target/debug/deps/echo_udp-ef9d2b0ff6255af9 [INFO] [stderr] Running /opt/crater/target/debug/deps/futures_select-264677ac70be255f [INFO] [stdout] [INFO] [stderr] Running /opt/crater/target/debug/deps/interval_print-b1ece7f62c187048 [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] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stderr] Running /opt/crater/target/debug/deps/print_each_packet-99b65cca43f4018b [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stderr] Running /opt/crater/target/debug/deps/print_lines-b3392808fe177fe8 [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] [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] [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] [stderr] Running /opt/crater/target/debug/deps/tcp_client-9cc819682027af8b [INFO] [stdout] [INFO] [stderr] Running /opt/crater/target/debug/deps/tcp_server-9eabde82aa568ec8 [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stderr] Running /opt/crater/target/debug/deps/tcp_server3-45bd1084b5ba1129 [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" "9c0d2898cd1f36c296b211b719e93f7b819eac3e2c6087a971d195d10e96208a"` [INFO] running `"docker" "rm" "-f" "9c0d2898cd1f36c296b211b719e93f7b819eac3e2c6087a971d195d10e96208a"` [INFO] [stdout] 9c0d2898cd1f36c296b211b719e93f7b819eac3e2c6087a971d195d10e96208a