[INFO] fetching crate composing 0.2.0...
[INFO] testing composing-0.2.0 against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] extracting crate composing 0.2.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate composing 0.2.0
[INFO] finished tweaking crates.io crate composing 0.2.0
[INFO] tweaked toml for crates.io crate composing 0.2.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate composing 0.2.0 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "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" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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] a597d469786eff5a0d457dd377de265cbc19925b05cacab045075264379ea99b
[INFO] running `Command { std: "docker" "start" "-a" "a597d469786eff5a0d457dd377de265cbc19925b05cacab045075264379ea99b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a597d469786eff5a0d457dd377de265cbc19925b05cacab045075264379ea99b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a597d469786eff5a0d457dd377de265cbc19925b05cacab045075264379ea99b", kill_on_drop: false }`
[INFO] [stdout] a597d469786eff5a0d457dd377de265cbc19925b05cacab045075264379ea99b
[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] 28fb5f88028ce646ebdaa5e8d6f1353288f7d57832ed61f2f0f049a6730351d0
[INFO] running `Command { std: "docker" "start" "-a" "28fb5f88028ce646ebdaa5e8d6f1353288f7d57832ed61f2f0f049a6730351d0", kill_on_drop: false }`
[INFO] [stderr]    Compiling composing v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "28fb5f88028ce646ebdaa5e8d6f1353288f7d57832ed61f2f0f049a6730351d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28fb5f88028ce646ebdaa5e8d6f1353288f7d57832ed61f2f0f049a6730351d0", kill_on_drop: false }`
[INFO] [stdout] 28fb5f88028ce646ebdaa5e8d6f1353288f7d57832ed61f2f0f049a6730351d0
[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] f0a085f153ffae87efb47b0eada02bcca39c3db856faee47c46567578267b46d
[INFO] running `Command { std: "docker" "start" "-a" "f0a085f153ffae87efb47b0eada02bcca39c3db856faee47c46567578267b46d", kill_on_drop: false }`
[INFO] [stderr]    Compiling composing v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.38s
[INFO] running `Command { std: "docker" "inspect" "f0a085f153ffae87efb47b0eada02bcca39c3db856faee47c46567578267b46d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0a085f153ffae87efb47b0eada02bcca39c3db856faee47c46567578267b46d", kill_on_drop: false }`
[INFO] [stdout] f0a085f153ffae87efb47b0eada02bcca39c3db856faee47c46567578267b46d
[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] 85d8c2453ccac45426408a0a1ee8d473dcf08cd7b149553b64f050b04552f76f
[INFO] running `Command { std: "docker" "start" "-a" "85d8c2453ccac45426408a0a1ee8d473dcf08cd7b149553b64f050b04552f76f", 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/x86_64-unknown-linux-musl/debug/deps/composing-bedf8bb176d0483f)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test tests::advanced ... ok
[INFO] [stdout] test tests::expr_left_to_right ... ok
[INFO] [stdout] test tests::fn_left_to_right ... ok
[INFO] [stdout] test tests::expr_right_to_left ... ok
[INFO] [stdout] test tests::fn_right_to_left ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/integration_advanced.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/integration_advanced-1f34123112f4f6d7)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test advanced ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/integration_expr.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/integration_expr-70c29942987f748d)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test expr_left_to_right ... ok
[INFO] [stdout] test expr_right_to_left ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/integration_fn.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/integration_fn-d73c3c2e4f22e675)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test fn_left_to_right ... ok
[INFO] [stdout] test fn_right_to_left ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "85d8c2453ccac45426408a0a1ee8d473dcf08cd7b149553b64f050b04552f76f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85d8c2453ccac45426408a0a1ee8d473dcf08cd7b149553b64f050b04552f76f", kill_on_drop: false }`
[INFO] [stdout] 85d8c2453ccac45426408a0a1ee8d473dcf08cd7b149553b64f050b04552f76f