[INFO] fetching crate read-write-ext 1.0.0...
[INFO] testing read-write-ext-1.0.0 against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] extracting crate read-write-ext 1.0.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate read-write-ext 1.0.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate read-write-ext 1.0.0
[INFO] tweaked toml for crates.io crate read-write-ext 1.0.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate read-write-ext 1.0.0 on toolchain 8de4c7234dd9b97c9d76b58671343fdbbc9a433e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate read-write-ext 1.0.0 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" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fixed-buffer v1.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1d1ee62c29b2268657ff455aa13acdd5600fa5a2ed9d674121ec266608addf28
[INFO] running `Command { std: "docker" "start" "-a" "1d1ee62c29b2268657ff455aa13acdd5600fa5a2ed9d674121ec266608addf28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1d1ee62c29b2268657ff455aa13acdd5600fa5a2ed9d674121ec266608addf28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d1ee62c29b2268657ff455aa13acdd5600fa5a2ed9d674121ec266608addf28", kill_on_drop: false }`
[INFO] [stdout] 1d1ee62c29b2268657ff455aa13acdd5600fa5a2ed9d674121ec266608addf28
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "build" "--frozen" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] bdb4893fffd152d661e3930bb403ebaf833f196ad8b60d714f0d72ce8ce13ab0
[INFO] running `Command { std: "docker" "start" "-a" "bdb4893fffd152d661e3930bb403ebaf833f196ad8b60d714f0d72ce8ce13ab0", kill_on_drop: false }`
[INFO] [stderr]    Compiling read-write-ext v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] running `Command { std: "docker" "inspect" "bdb4893fffd152d661e3930bb403ebaf833f196ad8b60d714f0d72ce8ce13ab0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bdb4893fffd152d661e3930bb403ebaf833f196ad8b60d714f0d72ce8ce13ab0", kill_on_drop: false }`
[INFO] [stdout] bdb4893fffd152d661e3930bb403ebaf833f196ad8b60d714f0d72ce8ce13ab0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--no-run" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 3ec5ed20d81e0199b268e2a0c0caa0b6668c5ed697fe1d40312ee0a7c9bc6fe7
[INFO] running `Command { std: "docker" "start" "-a" "3ec5ed20d81e0199b268e2a0c0caa0b6668c5ed697fe1d40312ee0a7c9bc6fe7", kill_on_drop: false }`
[INFO] [stderr]    Compiling fixed-buffer v1.0.0
[INFO] [stderr]    Compiling read-write-ext v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "3ec5ed20d81e0199b268e2a0c0caa0b6668c5ed697fe1d40312ee0a7c9bc6fe7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ec5ed20d81e0199b268e2a0c0caa0b6668c5ed697fe1d40312ee0a7c9bc6fe7", kill_on_drop: false }`
[INFO] [stdout] 3ec5ed20d81e0199b268e2a0c0caa0b6668c5ed697fe1d40312ee0a7c9bc6fe7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 3ee39a22b34c1f2ab3968c2286a56da67708328fba3421d518fa10f3c1e8cf30
[INFO] running `Command { std: "docker" "start" "-a" "3ee39a22b34c1f2ab3968c2286a56da67708328fba3421d518fa10f3c1e8cf30", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/read_write_ext-6845d574aa9e31f8)
[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] [stderr]      Running tests/chain.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/chain-086cbdb87ae26619)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test both_empty ... ok
[INFO] [stdout] test doesnt_read_second_when_first_has_data ... ok
[INFO] [stdout] test passes_flush_through ... ok
[INFO] [stdout] test doesnt_read_second_when_first_returns_error ... ok
[INFO] [stdout] test passes_write_through ... ok
[INFO] [stdout] test reads_first_then_second ... ok
[INFO] [stdout] test reads_second_when_first_empty ... ok
[INFO] [stdout] test returns_error_from_second ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/take.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/take-786de7de28aac025)
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test doesnt_call_read_after_len_reached ... ok
[INFO] [stdout] test doesnt_call_read_after_len_reached_in_multiple_reads ... ok
[INFO] [stdout] test doesnt_read_when_zero ... ok
[INFO] [stdout] test empty ... ok
[INFO] [stdout] test exactly_len ... ok
[INFO] [stdout] test exactly_len_in_multiple_reads ... ok
[INFO] [stdout] test fewer_than_len ... ok
[INFO] [stdout] test fewer_than_len_in_multiple_reads ... ok
[INFO] [stdout] test passes_flush_through ... ok
[INFO] [stdout] test passes_write_through ... ok
[INFO] [stdout] test read_error ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/test_utils.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/test_utils-fddbb9952279d543)
[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] running `Command { std: "docker" "inspect" "3ee39a22b34c1f2ab3968c2286a56da67708328fba3421d518fa10f3c1e8cf30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ee39a22b34c1f2ab3968c2286a56da67708328fba3421d518fa10f3c1e8cf30", kill_on_drop: false }`
[INFO] [stdout] 3ee39a22b34c1f2ab3968c2286a56da67708328fba3421d518fa10f3c1e8cf30