[INFO] cloning repository https://github.com/seanchen1991/AvlTreeSet
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/seanchen1991/AvlTreeSet" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fseanchen1991%2FAvlTreeSet", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fseanchen1991%2FAvlTreeSet'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4cf7a8f1dfd355bc6ebeba06dca1c66e165e7b4a
[INFO] testing seanchen1991/AvlTreeSet against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_getrandom_patch_0
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fseanchen1991%2FAvlTreeSet" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/seanchen1991/AvlTreeSet
[INFO] finished tweaking git repo https://github.com/seanchen1991/AvlTreeSet
[INFO] tweaked toml for git repo https://github.com/seanchen1991/AvlTreeSet written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/seanchen1991/AvlTreeSet 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 git repo https://github.com/seanchen1991/AvlTreeSet 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] 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] 75acd144e35df9f8d6ac1008f851437ec63fcad85bad241439e16fd9daeed87f
[INFO] running `Command { std: "docker" "start" "-a" "75acd144e35df9f8d6ac1008f851437ec63fcad85bad241439e16fd9daeed87f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "75acd144e35df9f8d6ac1008f851437ec63fcad85bad241439e16fd9daeed87f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75acd144e35df9f8d6ac1008f851437ec63fcad85bad241439e16fd9daeed87f", kill_on_drop: false }`
[INFO] [stdout] 75acd144e35df9f8d6ac1008f851437ec63fcad85bad241439e16fd9daeed87f
[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] f74ed60d34a390bc673dd129554572d2bc52875e5c668550ea52e0878b1088ed
[INFO] running `Command { std: "docker" "start" "-a" "f74ed60d34a390bc673dd129554572d2bc52875e5c668550ea52e0878b1088ed", kill_on_drop: false }`
[INFO] [stderr]    Compiling avl-tree-set v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `AvlTreeSetIter` is never constructed
[INFO] [stdout]   --> src/lib.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | struct AvlTreeSetIter<'a, T: Ord> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AvlTreeSetIter` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `iter` is never used
[INFO] [stdout]    --> src/lib.rs:202:8
[INFO] [stdout]     |
[INFO] [stdout] 201 | impl<'a, T: 'a + Ord> AvlTreeSet<T> {
[INFO] [stdout]     | ----------------------------------- method in this implementation
[INFO] [stdout] 202 |     fn iter(&'a self) -> AvlTreeSetIter<'a, T> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "f74ed60d34a390bc673dd129554572d2bc52875e5c668550ea52e0878b1088ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f74ed60d34a390bc673dd129554572d2bc52875e5c668550ea52e0878b1088ed", kill_on_drop: false }`
[INFO] [stdout] f74ed60d34a390bc673dd129554572d2bc52875e5c668550ea52e0878b1088ed
[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] 232e2b19f0fac9dd954647f2b5e66d2918a74ff0c5f235feb1fad17d596306c8
[INFO] running `Command { std: "docker" "start" "-a" "232e2b19f0fac9dd954647f2b5e66d2918a74ff0c5f235feb1fad17d596306c8", kill_on_drop: false }`
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling libc v0.2.72
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling syn v1.0.34
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]    Compiling ppv-lite86 v0.2.8
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling aho-corasick v0.7.13
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stdout] warning: struct `AvlTreeSetIter` is never constructed
[INFO] [stdout]   --> src/lib.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | struct AvlTreeSetIter<'a, T: Ord> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AvlTreeSetIter` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `iter` is never used
[INFO] [stdout]    --> src/lib.rs:202:8
[INFO] [stdout]     |
[INFO] [stdout] 201 | impl<'a, T: 'a + Ord> AvlTreeSet<T> {
[INFO] [stdout]     | ----------------------------------- method in this implementation
[INFO] [stdout] 202 |     fn iter(&'a self) -> AvlTreeSetIter<'a, T> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling quickcheck v0.9.2
[INFO] [stderr]    Compiling quickcheck_macros v0.9.1
[INFO] [stderr]    Compiling avl-tree-set v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 21.93s
[INFO] running `Command { std: "docker" "inspect" "232e2b19f0fac9dd954647f2b5e66d2918a74ff0c5f235feb1fad17d596306c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "232e2b19f0fac9dd954647f2b5e66d2918a74ff0c5f235feb1fad17d596306c8", kill_on_drop: false }`
[INFO] [stdout] 232e2b19f0fac9dd954647f2b5e66d2918a74ff0c5f235feb1fad17d596306c8
[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] 60d5e0b0921ac8744c4d50e13902c90327f5daf43480cb94a67b73b131206b9d
[INFO] running `Command { std: "docker" "start" "-a" "60d5e0b0921ac8744c4d50e13902c90327f5daf43480cb94a67b73b131206b9d", kill_on_drop: false }`
[INFO] [stderr] warning: struct `AvlTreeSetIter` is never constructed
[INFO] [stderr]   --> src/lib.rs:27:8
[INFO] [stderr]    |
[INFO] [stderr] 27 | struct AvlTreeSetIter<'a, T: Ord> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `AvlTreeSetIter` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `iter` is never used
[INFO] [stderr]    --> src/lib.rs:202:8
[INFO] [stderr]     |
[INFO] [stderr] 201 | impl<'a, T: 'a + Ord> AvlTreeSet<T> {
[INFO] [stderr]     | ----------------------------------- method in this implementation
[INFO] [stderr] 202 |     fn iter(&'a self) -> AvlTreeSetIter<'a, T> {
[INFO] [stderr]     |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `avl-tree-set` (lib) generated 2 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/avl_tree_set-ac18cd24473edf8f)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test properties::insert_parity ... ok
[INFO] [stdout] test properties::iterator_parity ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "60d5e0b0921ac8744c4d50e13902c90327f5daf43480cb94a67b73b131206b9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60d5e0b0921ac8744c4d50e13902c90327f5daf43480cb94a67b73b131206b9d", kill_on_drop: false }`
[INFO] [stdout] 60d5e0b0921ac8744c4d50e13902c90327f5daf43480cb94a67b73b131206b9d