[INFO] fetching crate codec 0.0.7...
[INFO] testing codec-0.0.7 against master#733b47ea4b1b86216f14ef56e49440c33933f230+rustflags=-Copt-level=3 for pr-138759
[INFO] extracting crate codec 0.0.7 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate codec 0.0.7
[INFO] finished tweaking crates.io crate codec 0.0.7
[INFO] tweaked toml for crates.io crate codec 0.0.7 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate codec 0.0.7 on toolchain 733b47ea4b1b86216f14ef56e49440c33933f230
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate codec 0.0.7 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0b325d4efc887755a9d1674fa600f3d1a25c89e505c9029594d18fcd67e49965
[INFO] running `Command { std: "docker" "start" "-a" "0b325d4efc887755a9d1674fa600f3d1a25c89e505c9029594d18fcd67e49965", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0b325d4efc887755a9d1674fa600f3d1a25c89e505c9029594d18fcd67e49965", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b325d4efc887755a9d1674fa600f3d1a25c89e505c9029594d18fcd67e49965", kill_on_drop: false }`
[INFO] [stdout] 0b325d4efc887755a9d1674fa600f3d1a25c89e505c9029594d18fcd67e49965
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b6d4b4631cc8d9e2c8d441fa7b56849e8ba1c14d727b082efefbc0a15c0d7531
[INFO] running `Command { std: "docker" "start" "-a" "b6d4b4631cc8d9e2c8d441fa7b56849e8ba1c14d727b082efefbc0a15c0d7531", kill_on_drop: false }`
[INFO] [stderr]    Compiling heapless v0.9.1
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling hash32 v0.3.1
[INFO] [stderr]    Compiling codec v0.0.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.71s
[INFO] running `Command { std: "docker" "inspect" "b6d4b4631cc8d9e2c8d441fa7b56849e8ba1c14d727b082efefbc0a15c0d7531", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6d4b4631cc8d9e2c8d441fa7b56849e8ba1c14d727b082efefbc0a15c0d7531", kill_on_drop: false }`
[INFO] [stdout] b6d4b4631cc8d9e2c8d441fa7b56849e8ba1c14d727b082efefbc0a15c0d7531
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9340c74ed990d1d36497840d7fc2c254a4badf2765bd46cbe9b79fdbc691e5a7
[INFO] running `Command { std: "docker" "start" "-a" "9340c74ed990d1d36497840d7fc2c254a4badf2765bd46cbe9b79fdbc691e5a7", kill_on_drop: false }`
[INFO] [stderr]    Compiling codec v0.0.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.72s
[INFO] running `Command { std: "docker" "inspect" "9340c74ed990d1d36497840d7fc2c254a4badf2765bd46cbe9b79fdbc691e5a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9340c74ed990d1d36497840d7fc2c254a4badf2765bd46cbe9b79fdbc691e5a7", kill_on_drop: false }`
[INFO] [stdout] 9340c74ed990d1d36497840d7fc2c254a4badf2765bd46cbe9b79fdbc691e5a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 73e80cbe15a0cc572ae51b77d50e781f12493c2815e4eb150994de09d693f020
[INFO] running `Command { std: "docker" "start" "-a" "73e80cbe15a0cc572ae51b77d50e781f12493c2815e4eb150994de09d693f020", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/codec-2f7df747a2d135a6)
[INFO] [stdout] running 14 tests
[INFO] [stdout] test buffers::tests::rolling_buffer_read_batches ... ok
[INFO] [stdout] test buffers::tests::rolling_buffer_read_larger_than_buffer ... ok
[INFO] [stdout] test buffers::tests::rolling_buffer_read_singles ... ok
[INFO] [stdout] test buffers::tests::rolling_buffer_reset ... ok
[INFO] [stdout] test buffers::tests::rolling_buffer_write_batches ... ok
[INFO] [stdout] test buffers::tests::rolling_buffer_write_singles ... ok
[INFO] [stdout] test buffers::tests::static_buffer_original_buffer_restored_on_failed_read ... ok
[INFO] [stdout] test buffers::tests::static_buffer_read_batches ... ok
[INFO] [stdout] test buffers::tests::static_buffer_read_larger_than_buffer ... ok
[INFO] [stdout] test buffers::tests::static_buffer_read_singles ... ok
[INFO] [stdout] test buffers::tests::static_buffer_reset ... ok
[INFO] [stdout] test buffers::tests::static_buffer_write_batches ... ok
[INFO] [stdout] test buffers::tests::static_buffer_write_singles ... ok
[INFO] [stdout] test buffers::tests::rolling_buffer_original_buffer_restored_on_failed_read ... ok
[INFO] [stderr]    Doc-tests codec
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 5) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 5) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `StringContext`
[INFO] [stdout]   --> src/lib.rs:21:33
[INFO] [stdout]    |
[INFO] [stdout] 19 |                 str.encode(buf, StringContext::U8Len)
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^
[INFO] [stdout]    |                                 |
[INFO] [stdout]    |                                 use of undeclared type `StringContext`
[INFO] [stdout]    |                                 help: an enum with a similar name exists: `SizeContext`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `StringContext`
[INFO] [stdout]   --> src/lib.rs:37:53
[INFO] [stdout]    |
[INFO] [stdout] 35 |                 let str = String::<30>::decode(buf, StringContext::U8Len)?;
[INFO] [stdout]    |                                                     ^^^^^^^^^^^^^
[INFO] [stdout]    |                                                     |
[INFO] [stdout]    |                                                     use of undeclared type `StringContext`
[INFO] [stdout]    |                                                     help: an enum with a similar name exists: `SizeContext`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 5)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.32s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "73e80cbe15a0cc572ae51b77d50e781f12493c2815e4eb150994de09d693f020", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73e80cbe15a0cc572ae51b77d50e781f12493c2815e4eb150994de09d693f020", kill_on_drop: false }`
[INFO] [stdout] 73e80cbe15a0cc572ae51b77d50e781f12493c2815e4eb150994de09d693f020
