[INFO] fetching crate pin_tree 0.2.0...
[INFO] testing pin_tree-0.2.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate pin_tree 0.2.0 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate pin_tree 0.2.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pin_tree 0.2.0
[INFO] finished tweaking crates.io crate pin_tree 0.2.0
[INFO] tweaked toml for crates.io crate pin_tree 0.2.0 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d9de7b241345588520b7d3f8fa9e0e742d822b870245c5fa64be8bb28972c8e5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d9de7b241345588520b7d3f8fa9e0e742d822b870245c5fa64be8bb28972c8e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d9de7b241345588520b7d3f8fa9e0e742d822b870245c5fa64be8bb28972c8e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9de7b241345588520b7d3f8fa9e0e742d822b870245c5fa64be8bb28972c8e5", kill_on_drop: false }`
[INFO] [stdout] d9de7b241345588520b7d3f8fa9e0e742d822b870245c5fa64be8bb28972c8e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 91735a4c68e0f5034214bc3eeeebf5b3d772ae96b80831e7aeef21d92aa4a304
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "91735a4c68e0f5034214bc3eeeebf5b3d772ae96b80831e7aeef21d92aa4a304", kill_on_drop: false }`
[INFO] [stderr]    Compiling pin_tree v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.00s
[INFO] running `Command { std: "docker" "inspect" "91735a4c68e0f5034214bc3eeeebf5b3d772ae96b80831e7aeef21d92aa4a304", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91735a4c68e0f5034214bc3eeeebf5b3d772ae96b80831e7aeef21d92aa4a304", kill_on_drop: false }`
[INFO] [stdout] 91735a4c68e0f5034214bc3eeeebf5b3d772ae96b80831e7aeef21d92aa4a304
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5b14e5a1a7d764a5563e0e5c53c5f09c378d8c642f09330b169f2ad04e5a3768
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5b14e5a1a7d764a5563e0e5c53c5f09c378d8c642f09330b169f2ad04e5a3768", kill_on_drop: false }`
[INFO] [stderr]    Compiling pin_tree v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.89s
[INFO] running `Command { std: "docker" "inspect" "5b14e5a1a7d764a5563e0e5c53c5f09c378d8c642f09330b169f2ad04e5a3768", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b14e5a1a7d764a5563e0e5c53c5f09c378d8c642f09330b169f2ad04e5a3768", kill_on_drop: false }`
[INFO] [stdout] 5b14e5a1a7d764a5563e0e5c53c5f09c378d8c642f09330b169f2ad04e5a3768
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c61289eb3a87346cbf6dbd4abfeb8fb99d416110b85374f224aecb4ba1af1a63
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c61289eb3a87346cbf6dbd4abfeb8fb99d416110b85374f224aecb4ba1af1a63", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/pin_tree-d505334a98735923)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test tests::test_base ... ok
[INFO] [stdout] test tests::test_mutex ... ok
[INFO] [stdout] test tests::test_unset ... ok
[INFO] [stdout] test tests::test_remove ... ok
[INFO] [stdout] test tests::test_circular_ref ... ok
[INFO] [stdout] test tests::test_check_get ... ok
[INFO] [stdout] test tests::test_get_val ... ok
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests pin_tree
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/lib.rs - (line 19) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 3) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 31) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 19) stdout ----
[INFO] [stdout] error[E0425]: cannot find value `pt` in this scope
[INFO] [stdout]  --> src/lib.rs:21:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | pt.set_parent(b, a);
[INFO] [stdout]   | ^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `b` in this scope
[INFO] [stdout]  --> src/lib.rs:21:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | pt.set_parent(b, a);
[INFO] [stdout]   |               ^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `a` in this scope
[INFO] [stdout]  --> src/lib.rs:21:18
[INFO] [stdout]   |
[INFO] [stdout] 4 | pt.set_parent(b, a);
[INFO] [stdout]   |                  ^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `pt` in this scope
[INFO] [stdout]  --> src/lib.rs:22:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | pt.set_parent(a, c);
[INFO] [stdout]   | ^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `a` in this scope
[INFO] [stdout]  --> src/lib.rs:22:15
[INFO] [stdout]   |
[INFO] [stdout] 5 | pt.set_parent(a, c);
[INFO] [stdout]   |               ^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `c` in this scope
[INFO] [stdout]  --> src/lib.rs:22:18
[INFO] [stdout]   |
[INFO] [stdout] 5 | pt.set_parent(a, c);
[INFO] [stdout]   |                  ^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `pt` in this scope
[INFO] [stdout]  --> src/lib.rs:23:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | pt.set_parent(c, b);
[INFO] [stdout]   | ^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `c` in this scope
[INFO] [stdout]  --> src/lib.rs:23:15
[INFO] [stdout]   |
[INFO] [stdout] 6 | pt.set_parent(c, b);
[INFO] [stdout]   |               ^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `b` in this scope
[INFO] [stdout]  --> src/lib.rs:23:18
[INFO] [stdout]   |
[INFO] [stdout] 6 | pt.set_parent(c, b);
[INFO] [stdout]   |                  ^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `pt` in this scope
[INFO] [stdout]   --> src/lib.rs:28:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | pt.set_parent(a, a);
[INFO] [stdout]    | ^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `a` in this scope
[INFO] [stdout]   --> src/lib.rs:28:15
[INFO] [stdout]    |
[INFO] [stdout] 11 | pt.set_parent(a, a);
[INFO] [stdout]    |               ^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `a` in this scope
[INFO] [stdout]   --> src/lib.rs:28:18
[INFO] [stdout]    |
[INFO] [stdout] 11 | pt.set_parent(a, a);
[INFO] [stdout]    |                  ^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 12 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - (line 3) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `PinTree`
[INFO] [stdout]  --> src/lib.rs:4:14
[INFO] [stdout]   |
[INFO] [stdout] 3 | let mut pt = PinTree::<i32>::new();
[INFO] [stdout]   |              ^^^^^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]   |
[INFO] [stdout] 2 | use pin_tree::PinTree;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - (line 31) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `PinTree`
[INFO] [stdout]  --> src/lib.rs:32:14
[INFO] [stdout]   |
[INFO] [stdout] 3 | let mut pt = PinTree::<Mutex<i32>>::new();
[INFO] [stdout]   |              ^^^^^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]   |
[INFO] [stdout] 2 | use pin_tree::PinTree;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Mutex` in this scope
[INFO] [stdout]  --> src/lib.rs:32:24
[INFO] [stdout]   |
[INFO] [stdout] 3 | let mut pt = PinTree::<Mutex<i32>>::new();
[INFO] [stdout]   |                        ^^^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::sync::Mutex;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Mutex`
[INFO] [stdout]  --> src/lib.rs:34:17
[INFO] [stdout]   |
[INFO] [stdout] 5 | let a = pt.node(Mutex::new(1));
[INFO] [stdout]   |                 ^^^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::sync::Mutex;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0412, E0433.
[INFO] [stdout] For more information about an error, try `rustc --explain E0412`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 19)
[INFO] [stdout]     src/lib.rs - (line 3)
[INFO] [stdout]     src/lib.rs - (line 31)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 3 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.22s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "c61289eb3a87346cbf6dbd4abfeb8fb99d416110b85374f224aecb4ba1af1a63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c61289eb3a87346cbf6dbd4abfeb8fb99d416110b85374f224aecb4ba1af1a63", kill_on_drop: false }`
[INFO] [stdout] c61289eb3a87346cbf6dbd4abfeb8fb99d416110b85374f224aecb4ba1af1a63