[INFO] fetching crate acc_reader 2.0.0...
[INFO] testing acc_reader-2.0.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate acc_reader 2.0.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate acc_reader 2.0.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate acc_reader 2.0.0
[INFO] finished tweaking crates.io crate acc_reader 2.0.0
[INFO] tweaked toml for crates.io crate acc_reader 2.0.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 32eebd970b13fbba7089213d1d3117454a08fcbff67f52fa3603189857ceb0b2
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "32eebd970b13fbba7089213d1d3117454a08fcbff67f52fa3603189857ceb0b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "32eebd970b13fbba7089213d1d3117454a08fcbff67f52fa3603189857ceb0b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32eebd970b13fbba7089213d1d3117454a08fcbff67f52fa3603189857ceb0b2", kill_on_drop: false }`
[INFO] [stdout] 32eebd970b13fbba7089213d1d3117454a08fcbff67f52fa3603189857ceb0b2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b4b890355a1649c7bc67430fecb45d41efcafe544a2f711d5973c17bfe069bb4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b4b890355a1649c7bc67430fecb45d41efcafe544a2f711d5973c17bfe069bb4", kill_on_drop: false }`
[INFO] [stderr]    Compiling acc_reader v2.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:236:24
[INFO] [stdout]     |
[INFO] [stdout] 236 |             let read = try!(self.source.read(buf));
[INFO] [stdout]     |                        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:281:21
[INFO] [stdout]     |
[INFO] [stdout] 281 |                     try!(self.source.read_to_end(&mut self.buf));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:298:17
[INFO] [stdout]     |
[INFO] [stdout] 298 |                 try!(self.read_up_to(need_to_read));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:320:21
[INFO] [stdout]     |
[INFO] [stdout] 320 |                     try!(self.read_up_to(need_to_read));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `Command { std: "docker" "inspect" "b4b890355a1649c7bc67430fecb45d41efcafe544a2f711d5973c17bfe069bb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4b890355a1649c7bc67430fecb45d41efcafe544a2f711d5973c17bfe069bb4", kill_on_drop: false }`
[INFO] [stdout] b4b890355a1649c7bc67430fecb45d41efcafe544a2f711d5973c17bfe069bb4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 80a0e347128754eea27c0b7f5f7148e63c2efcb3554462409dfca01f695e270a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "80a0e347128754eea27c0b7f5f7148e63c2efcb3554462409dfca01f695e270a", kill_on_drop: false }`
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:236:24
[INFO] [stdout]     |
[INFO] [stdout] 236 |             let read = try!(self.source.read(buf));
[INFO] [stdout]     |                        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:281:21
[INFO] [stdout]     |
[INFO] [stdout] 281 |                     try!(self.source.read_to_end(&mut self.buf));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling acc_reader v2.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:298:17
[INFO] [stdout]     |
[INFO] [stdout] 298 |                 try!(self.read_up_to(need_to_read));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:320:21
[INFO] [stdout]     |
[INFO] [stdout] 320 |                     try!(self.read_up_to(need_to_read));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:236:24
[INFO] [stdout]     |
[INFO] [stdout] 236 |             let read = try!(self.source.read(buf));
[INFO] [stdout]     |                        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:281:21
[INFO] [stdout]     |
[INFO] [stdout] 281 |                     try!(self.source.read_to_end(&mut self.buf));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:298:17
[INFO] [stdout]     |
[INFO] [stdout] 298 |                 try!(self.read_up_to(need_to_read));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:320:21
[INFO] [stdout]     |
[INFO] [stdout] 320 |                     try!(self.read_up_to(need_to_read));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.32s
[INFO] running `Command { std: "docker" "inspect" "80a0e347128754eea27c0b7f5f7148e63c2efcb3554462409dfca01f695e270a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80a0e347128754eea27c0b7f5f7148e63c2efcb3554462409dfca01f695e270a", kill_on_drop: false }`
[INFO] [stdout] 80a0e347128754eea27c0b7f5f7148e63c2efcb3554462409dfca01f695e270a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4b8dfc27a23d728906a874c93fb42265157277724df045b16e118e9cf3d34653
[INFO] running `Command { std: "docker" "start" "-a" "4b8dfc27a23d728906a874c93fb42265157277724df045b16e118e9cf3d34653", kill_on_drop: false }`
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:236:24
[INFO] [stderr]     |
[INFO] [stderr] 236 |             let read = try!(self.source.read(buf));
[INFO] [stderr]     |                        ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:281:21
[INFO] [stderr]     |
[INFO] [stderr] 281 |                     try!(self.source.read_to_end(&mut self.buf));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:298:17
[INFO] [stderr]     |
[INFO] [stderr] 298 |                 try!(self.read_up_to(need_to_read));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:320:21
[INFO] [stderr]     |
[INFO] [stderr] 320 |                     try!(self.read_up_to(need_to_read));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:236:24
[INFO] [stderr]     |
[INFO] [stderr] 236 |             let read = try!(self.source.read(buf));
[INFO] [stderr]     |                        ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:281:21
[INFO] [stderr]     |
[INFO] [stderr] 281 |                     try!(self.source.read_to_end(&mut self.buf));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:298:17
[INFO] [stderr]     |
[INFO] [stderr] 298 |                 try!(self.read_up_to(need_to_read));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:320:21
[INFO] [stderr]     |
[INFO] [stderr] 320 |                     try!(self.read_up_to(need_to_read));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/acc_reader-41f1dd9792635b22
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::test_acc_reader_buf_read ... ok
[INFO] [stdout] test tests::test_acc_reader_read ... ok
[INFO] [stdout] test tests::test_acc_reader_seek ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests acc_reader
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test src/lib.rs - AccReader (line 44) ... ok
[INFO] [stdout] test src/lib.rs - AccReader<R>::with_initial_capacity (line 109) ... ok
[INFO] [stdout] test src/lib.rs - AccReader<R>::with_increment (line 129) ... ok
[INFO] [stdout] test src/lib.rs - AccReader<R>::with_initial_capacity_and_increment (line 151) ... ok
[INFO] [stdout] test src/lib.rs - AccReader (line 61) ... ok
[INFO] [stdout] test src/lib.rs - AccReader<R>::into_inner (line 175) ... ok
[INFO] [stdout] test src/lib.rs - AccReader<R>::new (line 89) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4b8dfc27a23d728906a874c93fb42265157277724df045b16e118e9cf3d34653", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b8dfc27a23d728906a874c93fb42265157277724df045b16e118e9cf3d34653", kill_on_drop: false }`
[INFO] [stdout] 4b8dfc27a23d728906a874c93fb42265157277724df045b16e118e9cf3d34653