[INFO] fetching crate stringio 0.3.0...
[INFO] testing stringio-0.3.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate stringio 0.3.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate stringio 0.3.0 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 stringio 0.3.0
[INFO] finished tweaking crates.io crate stringio 0.3.0
[INFO] tweaked toml for crates.io crate stringio 0.3.0 written to /workspace/builds/worker-7/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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 607a7c71638959f653571a580a5fcdf95f3635d2c28195ad5066ee6905eccb3f
[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" "607a7c71638959f653571a580a5fcdf95f3635d2c28195ad5066ee6905eccb3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "607a7c71638959f653571a580a5fcdf95f3635d2c28195ad5066ee6905eccb3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "607a7c71638959f653571a580a5fcdf95f3635d2c28195ad5066ee6905eccb3f", kill_on_drop: false }`
[INFO] [stdout] 607a7c71638959f653571a580a5fcdf95f3635d2c28195ad5066ee6905eccb3f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4c8438bfe56648a35268f70e3fbc83a901b41d340c803efee4baae3265ebae6b
[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" "4c8438bfe56648a35268f70e3fbc83a901b41d340c803efee4baae3265ebae6b", kill_on_drop: false }`
[INFO] [stderr]    Compiling stringio v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: missing documentation for the crate
[INFO] [stdout]    --> src/lib.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout] 1   | / #![warn(bare_trait_objects)]
[INFO] [stdout] 2   | | #![deny(missing_debug_implementations)]
[INFO] [stdout] 3   | | #![warn(missing_docs)]
[INFO] [stdout] 4   | |
[INFO] [stdout] ...   |
[INFO] [stdout] 121 | |     }
[INFO] [stdout] 122 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:3:9
[INFO] [stdout]     |
[INFO] [stdout] 3   | #![warn(missing_docs)]
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for a module
[INFO] [stdout]  --> src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub mod read;
[INFO] [stdout]   | ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for a module
[INFO] [stdout]  --> src/lib.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub mod write;
[INFO] [stdout]   | ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]  --> src/write.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![warn(missing_docs)]
[INFO] [stdout]   |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for a trait
[INFO] [stdout]   --> src/write.rs:80:1
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub trait IntoStrWrite: io::Write {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for an associated function
[INFO] [stdout]   --> src/write.rs:81:5
[INFO] [stdout]    |
[INFO] [stdout] 81 | /     fn into_str_write(self) -> StrWriter<Self>
[INFO] [stdout] 82 | |     where
[INFO] [stdout] 83 | |         Self: Sized,
[INFO] [stdout] 84 | |     {
[INFO] [stdout] 85 | |         StrWriter::wrap(self)
[INFO] [stdout] 86 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for an associated function
[INFO] [stdout]   --> src/write.rs:88:5
[INFO] [stdout]    |
[INFO] [stdout] 88 |     fn str_writer_by_ref(&mut self) -> StrWriter<&mut Self> {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for an associated function
[INFO] [stdout]    --> src/write.rs:103:5
[INFO] [stdout]     |
[INFO] [stdout] 103 |     pub fn wrap(writer: W) -> Self {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.99s
[INFO] running `Command { std: "docker" "inspect" "4c8438bfe56648a35268f70e3fbc83a901b41d340c803efee4baae3265ebae6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c8438bfe56648a35268f70e3fbc83a901b41d340c803efee4baae3265ebae6b", kill_on_drop: false }`
[INFO] [stdout] 4c8438bfe56648a35268f70e3fbc83a901b41d340c803efee4baae3265ebae6b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] debca7d87cafc4cc10276b782f1249101b11626f47039336b6b49ae32c0f0a70
[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" "debca7d87cafc4cc10276b782f1249101b11626f47039336b6b49ae32c0f0a70", kill_on_drop: false }`
[INFO] [stdout] warning: missing documentation for the crate
[INFO] [stdout]    --> src/lib.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout] 1   | / #![warn(bare_trait_objects)]
[INFO] [stdout] 2   | | #![deny(missing_debug_implementations)]
[INFO] [stdout] 3   | | #![warn(missing_docs)]
[INFO] [stdout] 4   | |
[INFO] [stdout] ...   |
[INFO] [stdout] 121 | |     }
[INFO] [stdout] 122 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:3:9
[INFO] [stdout]     |
[INFO] [stdout] 3   | #![warn(missing_docs)]
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for a module
[INFO] [stdout]  --> src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub mod read;
[INFO] [stdout]   | ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for a module
[INFO] [stdout]  --> src/lib.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub mod write;
[INFO] [stdout]   | ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]  --> src/write.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![warn(missing_docs)]
[INFO] [stdout]   |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for a trait
[INFO] [stdout]   --> src/write.rs:80:1
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub trait IntoStrWrite: io::Write {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling stringio v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: missing documentation for an associated function
[INFO] [stdout]   --> src/write.rs:81:5
[INFO] [stdout]    |
[INFO] [stdout] 81 | /     fn into_str_write(self) -> StrWriter<Self>
[INFO] [stdout] 82 | |     where
[INFO] [stdout] 83 | |         Self: Sized,
[INFO] [stdout] 84 | |     {
[INFO] [stdout] 85 | |         StrWriter::wrap(self)
[INFO] [stdout] 86 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for an associated function
[INFO] [stdout]   --> src/write.rs:88:5
[INFO] [stdout]    |
[INFO] [stdout] 88 |     fn str_writer_by_ref(&mut self) -> StrWriter<&mut Self> {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for an associated function
[INFO] [stdout]    --> src/write.rs:103:5
[INFO] [stdout]     |
[INFO] [stdout] 103 |     pub fn wrap(writer: W) -> Self {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `Command { std: "docker" "inspect" "debca7d87cafc4cc10276b782f1249101b11626f47039336b6b49ae32c0f0a70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "debca7d87cafc4cc10276b782f1249101b11626f47039336b6b49ae32c0f0a70", kill_on_drop: false }`
[INFO] [stdout] debca7d87cafc4cc10276b782f1249101b11626f47039336b6b49ae32c0f0a70
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e53d6960722549771a1f56a529a94f300d373c3aa054224604c7835ef9d9cf3d
[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" "e53d6960722549771a1f56a529a94f300d373c3aa054224604c7835ef9d9cf3d", kill_on_drop: false }`
[INFO] [stderr] warning: missing documentation for the crate
[INFO] [stderr]    --> src/lib.rs:1:1
[INFO] [stderr]     |
[INFO] [stderr] 1   | / #![warn(bare_trait_objects)]
[INFO] [stderr] 2   | | #![deny(missing_debug_implementations)]
[INFO] [stderr] 3   | | #![warn(missing_docs)]
[INFO] [stderr] 4   | |
[INFO] [stderr] ...   |
[INFO] [stderr] 121 | |     }
[INFO] [stderr] 122 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr]     |
[INFO] [stderr] note: the lint level is defined here
[INFO] [stderr]    --> src/lib.rs:3:9
[INFO] [stderr]     |
[INFO] [stderr] 3   | #![warn(missing_docs)]
[INFO] [stderr]     |         ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: missing documentation for a module
[INFO] [stderr]  --> src/lib.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub mod read;
[INFO] [stderr]   | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: missing documentation for a module
[INFO] [stderr]  --> src/lib.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub mod write;
[INFO] [stderr]   | ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] note: the lint level is defined here
[INFO] [stderr]  --> src/write.rs:3:9
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![warn(missing_docs)]
[INFO] [stderr]   |         ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: missing documentation for a trait
[INFO] [stderr]   --> src/write.rs:80:1
[INFO] [stderr]    |
[INFO] [stderr] 80 | pub trait IntoStrWrite: io::Write {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: missing documentation for an associated function
[INFO] [stderr]   --> src/write.rs:81:5
[INFO] [stderr]    |
[INFO] [stderr] 81 | /     fn into_str_write(self) -> StrWriter<Self>
[INFO] [stderr] 82 | |     where
[INFO] [stderr] 83 | |         Self: Sized,
[INFO] [stderr] 84 | |     {
[INFO] [stderr] 85 | |         StrWriter::wrap(self)
[INFO] [stderr] 86 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: missing documentation for an associated function
[INFO] [stderr]   --> src/write.rs:88:5
[INFO] [stderr]    |
[INFO] [stderr] 88 |     fn str_writer_by_ref(&mut self) -> StrWriter<&mut Self> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: missing documentation for an associated function
[INFO] [stderr]    --> src/write.rs:103:5
[INFO] [stderr]     |
[INFO] [stderr] 103 |     pub fn wrap(writer: W) -> Self {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/stringio-29829ae6a98872b0
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test tests::test_partial_from_utf8::test_empty ... ok
[INFO] [stdout] test tests::test_partial_from_utf8::test_bad_unicode ... ok
[INFO] [stdout] test tests::test_partial_from_utf8::test_not_unicode ... ok
[INFO] [stdout] test tests::test_partial_from_utf8::test_simple_string ... ok
[INFO] [stdout] test write::test_is_continuation_byte ... ok
[INFO] [stdout] test tests::test_partial_from_utf8::test_partial_string ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests stringio
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - partial_from_utf8 (line 22) ... ok
[INFO] [stdout] test src/lib.rs - partial_from_utf8_mut (line 50) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e53d6960722549771a1f56a529a94f300d373c3aa054224604c7835ef9d9cf3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e53d6960722549771a1f56a529a94f300d373c3aa054224604c7835ef9d9cf3d", kill_on_drop: false }`
[INFO] [stdout] e53d6960722549771a1f56a529a94f300d373c3aa054224604c7835ef9d9cf3d