[INFO] fetching crate arctree 0.1.0...
[INFO] testing arctree-0.1.0 against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] extracting crate arctree 0.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate arctree 0.1.0
[INFO] finished tweaking crates.io crate arctree 0.1.0
[INFO] tweaked toml for crates.io crate arctree 0.1.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate arctree 0.1.0 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 19 packages to latest compatible versions
[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]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 39995e7423caf696340cf4b0b2c09b9b54a91abe1b1f120becd00e6e9d9308be
[INFO] running `Command { std: "docker" "start" "-a" "39995e7423caf696340cf4b0b2c09b9b54a91abe1b1f120becd00e6e9d9308be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "39995e7423caf696340cf4b0b2c09b9b54a91abe1b1f120becd00e6e9d9308be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39995e7423caf696340cf4b0b2c09b9b54a91abe1b1f120becd00e6e9d9308be", kill_on_drop: false }`
[INFO] [stdout] 39995e7423caf696340cf4b0b2c09b9b54a91abe1b1f120becd00e6e9d9308be
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 70d06fb75dcf3266b1259abf62c5903c76b3023369749f9269ff4a87797d7618
[INFO] running `Command { std: "docker" "start" "-a" "70d06fb75dcf3266b1259abf62c5903c76b3023369749f9269ff4a87797d7618", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.5.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.11
[INFO] [stderr]    Compiling cfg-if v1.0.1
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling libc v0.2.174
[INFO] [stderr]    Compiling lock_api v0.4.13
[INFO] [stderr]    Compiling parking_lot v0.12.4
[INFO] [stderr]    Compiling arctree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.20s
[INFO] running `Command { std: "docker" "inspect" "70d06fb75dcf3266b1259abf62c5903c76b3023369749f9269ff4a87797d7618", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70d06fb75dcf3266b1259abf62c5903c76b3023369749f9269ff4a87797d7618", kill_on_drop: false }`
[INFO] [stdout] 70d06fb75dcf3266b1259abf62c5903c76b3023369749f9269ff4a87797d7618
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] c405ec7bdac514146b5efeea1dbbb8aee3802ca0679f881c90a8563242f61b12
[INFO] running `Command { std: "docker" "start" "-a" "c405ec7bdac514146b5efeea1dbbb8aee3802ca0679f881c90a8563242f61b12", kill_on_drop: false }`
[INFO] [stderr]    Compiling arctree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.12s
[INFO] running `Command { std: "docker" "inspect" "c405ec7bdac514146b5efeea1dbbb8aee3802ca0679f881c90a8563242f61b12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c405ec7bdac514146b5efeea1dbbb8aee3802ca0679f881c90a8563242f61b12", kill_on_drop: false }`
[INFO] [stdout] c405ec7bdac514146b5efeea1dbbb8aee3802ca0679f881c90a8563242f61b12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 574646179bb4f01029fa11c031448b3f1b1d029d51f737903ef79787fc30a9a1
[INFO] running `Command { std: "docker" "start" "-a" "574646179bb4f01029fa11c031448b3f1b1d029d51f737903ef79787fc30a9a1", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/arctree-8280e6410cec9c11)
[INFO] [stdout] 
[INFO] [stderr]      Running tests/tests.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/tests-88b1732a45344dd2)
[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 16 tests
[INFO] [stdout] test children_2 ... ok
[INFO] [stdout] test children_1 ... ok
[INFO] [stdout] test make_copy_1 ... ok
[INFO] [stdout] test drop_keeps_strong_refs ... ok
[INFO] [stdout] test make_deep_copy_1 ... ok
[INFO] [stdout] test it_works ... ok
[INFO] [stdout] test traverse_2 ... ok
[INFO] [stdout] test traverse_1 ... ok
[INFO] [stdout] test weak_1 ... ok
[INFO] [stdout] test weak_2 ... ok
[INFO] [stdout] test append_1 - should panic ... ok
[INFO] [stdout] test insert_after_1 - should panic ... ok
[INFO] [stdout] test insert_before_1 - should panic ... ok
[INFO] [stdout] test prepend_1 - should panic ... ok
[INFO] [stdout] test iter_1 - should panic ... ok
[INFO] [stdout] test stack_overflow ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 16 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.31s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "574646179bb4f01029fa11c031448b3f1b1d029d51f737903ef79787fc30a9a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "574646179bb4f01029fa11c031448b3f1b1d029d51f737903ef79787fc30a9a1", kill_on_drop: false }`
[INFO] [stdout] 574646179bb4f01029fa11c031448b3f1b1d029d51f737903ef79787fc30a9a1