[INFO] fetching crate rustsync 0.2.3...
[INFO] testing rustsync-0.2.3 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate rustsync 0.2.3 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate rustsync 0.2.3 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rustsync 0.2.3
[INFO] finished tweaking crates.io crate rustsync 0.2.3
[INFO] tweaked toml for crates.io crate rustsync 0.2.3 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 55623fbd36b697cdc5d793ee76d64969e360c2d3e7dbdfd8ab2d630a539101a1
[INFO] running `Command { std: "docker" "start" "-a" "55623fbd36b697cdc5d793ee76d64969e360c2d3e7dbdfd8ab2d630a539101a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "55623fbd36b697cdc5d793ee76d64969e360c2d3e7dbdfd8ab2d630a539101a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "55623fbd36b697cdc5d793ee76d64969e360c2d3e7dbdfd8ab2d630a539101a1", kill_on_drop: false }`
[INFO] [stdout] 55623fbd36b697cdc5d793ee76d64969e360c2d3e7dbdfd8ab2d630a539101a1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 70327d54c450af1ac8a0b4905fe5e98ece6e2f043186c634223c36100614061d
[INFO] running `Command { std: "docker" "start" "-a" "70327d54c450af1ac8a0b4905fe5e98ece6e2f043186c634223c36100614061d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]    Compiling constant_time_eq v0.1.5
[INFO] [stderr]    Compiling blake2-rfc v0.2.18
[INFO] [stderr]    Compiling rustsync v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:243:41
[INFO] [stdout]     |
[INFO] [stdout] 243 |                 if let Async::Ready((r, mut block, len)) = reading.poll()? {
[INFO] [stdout]     |                                         ----^^^^^
[INFO] [stdout]     |                                         |
[INFO] [stdout]     |                                         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:430:29
[INFO] [stdout]     |
[INFO] [stdout] 430 |                         let mut hash = adler32::RollingAdler32::from_buffer(&block.as_ref()[..len]);
[INFO] [stdout]     |                             ----^^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.45s
[INFO] running `Command { std: "docker" "inspect" "70327d54c450af1ac8a0b4905fe5e98ece6e2f043186c634223c36100614061d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70327d54c450af1ac8a0b4905fe5e98ece6e2f043186c634223c36100614061d", kill_on_drop: false }`
[INFO] [stdout] 70327d54c450af1ac8a0b4905fe5e98ece6e2f043186c634223c36100614061d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2e0e32ee39e6858d5d81fa3486ce99d77672eaea93882c8f43f466f48204d56a
[INFO] running `Command { std: "docker" "start" "-a" "2e0e32ee39e6858d5d81fa3486ce99d77672eaea93882c8f43f466f48204d56a", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustsync v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:243:41
[INFO] [stdout]     |
[INFO] [stdout] 243 |                 if let Async::Ready((r, mut block, len)) = reading.poll()? {
[INFO] [stdout]     |                                         ----^^^^^
[INFO] [stdout]     |                                         |
[INFO] [stdout]     |                                         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:430:29
[INFO] [stdout]     |
[INFO] [stdout] 430 |                         let mut hash = adler32::RollingAdler32::from_buffer(&block.as_ref()[..len]);
[INFO] [stdout]     |                             ----^^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:243:41
[INFO] [stdout]     |
[INFO] [stdout] 243 |                 if let Async::Ready((r, mut block, len)) = reading.poll()? {
[INFO] [stdout]     |                                         ----^^^^^
[INFO] [stdout]     |                                         |
[INFO] [stdout]     |                                         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:430:29
[INFO] [stdout]     |
[INFO] [stdout] 430 |                         let mut hash = adler32::RollingAdler32::from_buffer(&block.as_ref()[..len]);
[INFO] [stdout]     |                             ----^^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.72s
[INFO] running `Command { std: "docker" "inspect" "2e0e32ee39e6858d5d81fa3486ce99d77672eaea93882c8f43f466f48204d56a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e0e32ee39e6858d5d81fa3486ce99d77672eaea93882c8f43f466f48204d56a", kill_on_drop: false }`
[INFO] [stdout] 2e0e32ee39e6858d5d81fa3486ce99d77672eaea93882c8f43f466f48204d56a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3322f9f4d430b3d9bc66a7466a0505584d908f702d9471766a3a32b7a30dfa8d
[INFO] running `Command { std: "docker" "start" "-a" "3322f9f4d430b3d9bc66a7466a0505584d908f702d9471766a3a32b7a30dfa8d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:243:41
[INFO] [stderr]     |
[INFO] [stderr] 243 |                 if let Async::Ready((r, mut block, len)) = reading.poll()? {
[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: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:430:29
[INFO] [stderr]     |
[INFO] [stderr] 430 |                         let mut hash = adler32::RollingAdler32::from_buffer(&block.as_ref()[..len]);
[INFO] [stderr]     |                             ----^^^^
[INFO] [stderr]     |                             |
[INFO] [stderr]     |                             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: `rustsync` (lib) generated 2 warnings
[INFO] [stderr] warning: `rustsync` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.46s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rustsync-c362f83b49a7352b)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::basic ... ok
[INFO] [stdout] test tests::futures ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.07s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rustsync
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 4) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.75s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3322f9f4d430b3d9bc66a7466a0505584d908f702d9471766a3a32b7a30dfa8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3322f9f4d430b3d9bc66a7466a0505584d908f702d9471766a3a32b7a30dfa8d", kill_on_drop: false }`
[INFO] [stdout] 3322f9f4d430b3d9bc66a7466a0505584d908f702d9471766a3a32b7a30dfa8d
