[INFO] fetching crate display_buffer 0.1.0...
[INFO] testing display_buffer-0.1.0 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-7
[INFO] extracting crate display_buffer 0.1.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate display_buffer 0.1.0
[INFO] finished tweaking crates.io crate display_buffer 0.1.0
[INFO] tweaked toml for crates.io crate display_buffer 0.1.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate display_buffer 0.1.0 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c83824ee3643f5cab92b5f868a9bce3d5c5ea63598b9b8885108023cd20350b0
[INFO] running `Command { std: "docker" "start" "-a" "c83824ee3643f5cab92b5f868a9bce3d5c5ea63598b9b8885108023cd20350b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c83824ee3643f5cab92b5f868a9bce3d5c5ea63598b9b8885108023cd20350b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c83824ee3643f5cab92b5f868a9bce3d5c5ea63598b9b8885108023cd20350b0", kill_on_drop: false }`
[INFO] [stdout] c83824ee3643f5cab92b5f868a9bce3d5c5ea63598b9b8885108023cd20350b0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 274dc83012b0a209d4c3c9e14164512fc08dbb6073a0434db5ead2a8a3ee8818
[INFO] running `Command { std: "docker" "start" "-a" "274dc83012b0a209d4c3c9e14164512fc08dbb6073a0434db5ead2a8a3ee8818", kill_on_drop: false }`
[INFO] [stderr]    Compiling display_buffer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "274dc83012b0a209d4c3c9e14164512fc08dbb6073a0434db5ead2a8a3ee8818", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "274dc83012b0a209d4c3c9e14164512fc08dbb6073a0434db5ead2a8a3ee8818", kill_on_drop: false }`
[INFO] [stdout] 274dc83012b0a209d4c3c9e14164512fc08dbb6073a0434db5ead2a8a3ee8818
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b9772865c448af4afbafd59e18ac320b6a9a11cf737f1ff413ad29ab4e301c58
[INFO] running `Command { std: "docker" "start" "-a" "b9772865c448af4afbafd59e18ac320b6a9a11cf737f1ff413ad29ab4e301c58", kill_on_drop: false }`
[INFO] [stderr]    Compiling display_buffer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `Command { std: "docker" "inspect" "b9772865c448af4afbafd59e18ac320b6a9a11cf737f1ff413ad29ab4e301c58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9772865c448af4afbafd59e18ac320b6a9a11cf737f1ff413ad29ab4e301c58", kill_on_drop: false }`
[INFO] [stdout] b9772865c448af4afbafd59e18ac320b6a9a11cf737f1ff413ad29ab4e301c58
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d7d7079d51bf8924b633e0f31b9a199d3e4f83947e5e5ef7f687abd7ebaa552e
[INFO] running `Command { std: "docker" "start" "-a" "d7d7079d51bf8924b633e0f31b9a199d3e4f83947e5e5ef7f687abd7ebaa552e", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/display_buffer-c9e06109f1f38665)
[INFO] [stderr]      Running tests/tests.rs (/opt/rustwide/target/debug/deps/tests-1cc77f2c54d86e0f)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test write_1_byte_char ... ok
[INFO] [stdout] test write_2_byte_char ... ok
[INFO] [stdout] test write_multiple_strs ... ok
[INFO] [stdout] test write_too_much ... ok
[INFO] [stdout] test write_3_byte_char ... ok
[INFO] [stdout] test write_char ... ok
[INFO] [stdout] test write_empty_str ... ok
[INFO] [stdout] test write_4_byte_char ... ok
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests display_buffer
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - DisplayBuffer (line 12) ... ok
[INFO] [stdout] test src/lib.rs - fmt (line 147) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.37s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d7d7079d51bf8924b633e0f31b9a199d3e4f83947e5e5ef7f687abd7ebaa552e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7d7079d51bf8924b633e0f31b9a199d3e4f83947e5e5ef7f687abd7ebaa552e", kill_on_drop: false }`
[INFO] [stdout] d7d7079d51bf8924b633e0f31b9a199d3e4f83947e5e5ef7f687abd7ebaa552e