[INFO] fetching crate rs-streams 0.1.8...
[INFO] testing rs-streams-0.1.8 against 1.55.0 for beta-1.56-1
[INFO] extracting crate rs-streams 0.1.8 into /workspace/builds/worker-48/source
[INFO] validating manifest of crates.io crate rs-streams 0.1.8 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rs-streams 0.1.8
[INFO] finished tweaking crates.io crate rs-streams 0.1.8
[INFO] tweaked toml for crates.io crate rs-streams 0.1.8 written to /workspace/builds/worker-48/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rs-ctypes v0.1.1
[INFO] [stderr]   Downloaded rs-alloc v0.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 936185afb8d0baaffd75c042d5a6d9172cf1b7820c25826357ac3a46055ff241
[INFO] running `Command { std: "docker" "start" "-a" "936185afb8d0baaffd75c042d5a6d9172cf1b7820c25826357ac3a46055ff241", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "936185afb8d0baaffd75c042d5a6d9172cf1b7820c25826357ac3a46055ff241", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "936185afb8d0baaffd75c042d5a6d9172cf1b7820c25826357ac3a46055ff241", kill_on_drop: false }`
[INFO] [stdout] 936185afb8d0baaffd75c042d5a6d9172cf1b7820c25826357ac3a46055ff241
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 51ec52de5c0838a05436894c63cd1370f02091e4cf0eaae5d5dcaa53f39718e1
[INFO] running `Command { std: "docker" "start" "-a" "51ec52de5c0838a05436894c63cd1370f02091e4cf0eaae5d5dcaa53f39718e1", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rs-ctypes v0.1.1
[INFO] [stderr]    Compiling rs-alloc v0.0.1
[INFO] [stderr]    Compiling rs-streams v0.1.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `repr`
[INFO] [stdout]    --> src/lib.rs:103:5
[INFO] [stdout]     |
[INFO] [stdout] 103 |     repr: Repr,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on `Self: Drop` are useless, consider instead using `core::mem::needs_drop` to detect if a type has a destructor
[INFO] [stdout]    --> src/lib.rs:139:20
[INFO] [stdout]     |
[INFO] [stdout] 139 | pub trait Stream : Drop {
[INFO] [stdout]     |                    ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(drop_bounds)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.50s
[INFO] running `Command { std: "docker" "inspect" "51ec52de5c0838a05436894c63cd1370f02091e4cf0eaae5d5dcaa53f39718e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51ec52de5c0838a05436894c63cd1370f02091e4cf0eaae5d5dcaa53f39718e1", kill_on_drop: false }`
[INFO] [stdout] 51ec52de5c0838a05436894c63cd1370f02091e4cf0eaae5d5dcaa53f39718e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cc8f0f1dd37879c0d48bafcd540dc3f652c0f1cde7a46cff54d30d3f3c0e3cc6
[INFO] running `Command { std: "docker" "start" "-a" "cc8f0f1dd37879c0d48bafcd540dc3f652c0f1cde7a46cff54d30d3f3c0e3cc6", kill_on_drop: false }`
[INFO] [stderr]    Compiling rs-streams v0.1.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `repr`
[INFO] [stdout]    --> src/lib.rs:103:5
[INFO] [stdout]     |
[INFO] [stdout] 103 |     repr: Repr,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on `Self: Drop` are useless, consider instead using `core::mem::needs_drop` to detect if a type has a destructor
[INFO] [stdout]    --> src/lib.rs:139:20
[INFO] [stdout]     |
[INFO] [stdout] 139 | pub trait Stream : Drop {
[INFO] [stdout]     |                    ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(drop_bounds)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `repr`
[INFO] [stdout]    --> src/lib.rs:103:5
[INFO] [stdout]     |
[INFO] [stdout] 103 |     repr: Repr,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on `Self: Drop` are useless, consider instead using `core::mem::needs_drop` to detect if a type has a destructor
[INFO] [stdout]    --> src/lib.rs:139:20
[INFO] [stdout]     |
[INFO] [stdout] 139 | pub trait Stream : Drop {
[INFO] [stdout]     |                    ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(drop_bounds)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.36s
[INFO] running `Command { std: "docker" "inspect" "cc8f0f1dd37879c0d48bafcd540dc3f652c0f1cde7a46cff54d30d3f3c0e3cc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc8f0f1dd37879c0d48bafcd540dc3f652c0f1cde7a46cff54d30d3f3c0e3cc6", kill_on_drop: false }`
[INFO] [stdout] cc8f0f1dd37879c0d48bafcd540dc3f652c0f1cde7a46cff54d30d3f3c0e3cc6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d69d976e66db0e99d6f721220bab60444a5e02e63fa2e5f29aadd85c3d1d9be7
[INFO] running `Command { std: "docker" "start" "-a" "d69d976e66db0e99d6f721220bab60444a5e02e63fa2e5f29aadd85c3d1d9be7", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] 
[INFO] [stderr] warning: field is never read: `repr`
[INFO] [stdout] running 4 tests
[INFO] [stderr]    --> src/lib.rs:103:5
[INFO] [stdout] test memorystream::tests::test_memory_read_stream ... ok
[INFO] [stderr]     |
[INFO] [stdout] test file::tests::test_create_read_remove_file ... ok
[INFO] [stderr] 103 |     repr: Repr,
[INFO] [stdout] test file::tests::test_macros ... ok
[INFO] [stderr]     |     ^^^^^^^^^^
[INFO] [stdout] test memorystream::tests::test_memory_write_stream ... ok
[INFO] [stderr]     |
[INFO] [stdout] 
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stderr] warning: bounds on `Self: Drop` are useless, consider instead using `core::mem::needs_drop` to detect if a type has a destructor
[INFO] [stdout] 123456
[INFO] [stderr]    --> src/lib.rs:139:20
[INFO] [stdout] hello world 1 2hello world 3 4
[INFO] [stderr]     |
[INFO] [stderr] 139 | pub trait Stream : Drop {
[INFO] [stderr]     |                    ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(drop_bounds)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rs-streams` (lib) generated 2 warnings
[INFO] [stderr] warning: `rs-streams` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.51s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rs_streams-d1102e02f865446b)
[INFO] [stderr] 123456
[INFO] [stderr] hello world 1 2hello world 3 4
[INFO] [stderr]    Doc-tests rs-streams
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - Error::from (line 113) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.53s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d69d976e66db0e99d6f721220bab60444a5e02e63fa2e5f29aadd85c3d1d9be7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d69d976e66db0e99d6f721220bab60444a5e02e63fa2e5f29aadd85c3d1d9be7", kill_on_drop: false }`
[INFO] [stdout] d69d976e66db0e99d6f721220bab60444a5e02e63fa2e5f29aadd85c3d1d9be7