[INFO] fetching crate crumb 0.1.0...
[INFO] testing crumb-0.1.0 against master#99e3aef02079e9c10583638520cd0c134dc3a01d for pr-85530
[INFO] extracting crate crumb 0.1.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate crumb 0.1.0 on toolchain 99e3aef02079e9c10583638520cd0c134dc3a01d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate crumb 0.1.0
[INFO] finished tweaking crates.io crate crumb 0.1.0
[INFO] tweaked toml for crates.io crate crumb 0.1.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 778dd998b5110e983b4f99eca38cf285a75c330b8c98ef603dc88ebd9a759fbb
[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" "778dd998b5110e983b4f99eca38cf285a75c330b8c98ef603dc88ebd9a759fbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "778dd998b5110e983b4f99eca38cf285a75c330b8c98ef603dc88ebd9a759fbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "778dd998b5110e983b4f99eca38cf285a75c330b8c98ef603dc88ebd9a759fbb", kill_on_drop: false }`
[INFO] [stdout] 778dd998b5110e983b4f99eca38cf285a75c330b8c98ef603dc88ebd9a759fbb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6c4a1b8b1d859a16394615662c3d9f55ca6f099d73741eae33d4a2dcd129baf8
[INFO] running `Command { std: "docker" "start" "-a" "6c4a1b8b1d859a16394615662c3d9f55ca6f099d73741eae33d4a2dcd129baf8", kill_on_drop: false }`
[INFO] [stderr]    Compiling crumb v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.18s
[INFO] running `Command { std: "docker" "inspect" "6c4a1b8b1d859a16394615662c3d9f55ca6f099d73741eae33d4a2dcd129baf8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c4a1b8b1d859a16394615662c3d9f55ca6f099d73741eae33d4a2dcd129baf8", kill_on_drop: false }`
[INFO] [stdout] 6c4a1b8b1d859a16394615662c3d9f55ca6f099d73741eae33d4a2dcd129baf8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 47ee4f5b6ea122fe8d7e09f256f14f0a7e6ec52c16a95008238c4dcbf606b127
[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" "47ee4f5b6ea122fe8d7e09f256f14f0a7e6ec52c16a95008238c4dcbf606b127", kill_on_drop: false }`
[INFO] [stderr]    Compiling crumb v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `Command { std: "docker" "inspect" "47ee4f5b6ea122fe8d7e09f256f14f0a7e6ec52c16a95008238c4dcbf606b127", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47ee4f5b6ea122fe8d7e09f256f14f0a7e6ec52c16a95008238c4dcbf606b127", kill_on_drop: false }`
[INFO] [stdout] 47ee4f5b6ea122fe8d7e09f256f14f0a7e6ec52c16a95008238c4dcbf606b127
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a8779256e64cee84b6ccf2d1538c06891a756d687ed011d2db4d5949f20074d7
[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" "a8779256e64cee84b6ccf2d1538c06891a756d687ed011d2db4d5949f20074d7", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] running 2 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/crumb-533e0ca064554a72)
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stderr]    Doc-tests crumb
[INFO] [stdout] test tests::exaustive ... 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] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 9) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 9) stdout ----
[INFO] [stdout] error[E0432]: unresolved import `crate::CrumbExt`
[INFO] [stdout]  --> src/lib.rs:10:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::CrumbExt;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^ no `CrumbExt` in the root
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `get_crumb` found for type `u64` in the current scope
[INFO] [stdout]   --> src/lib.rs:15:26
[INFO] [stdout]    |
[INFO] [stdout] 8  |     let crumb: u8 = test.get_crumb(1).unwrap();
[INFO] [stdout]    |                          ^^^^^^^^^ method not found in `u64`
[INFO] [stdout]    | 
[INFO] [stdout]   ::: /opt/rustwide/workdir/src/lib.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 |     fn get_crumb(&self, nibble_index: u8) -> core::option::Option<u8>;
[INFO] [stdout]    |        --------- the method is available for `u64` here
[INFO] [stdout]    |
[INFO] [stdout]    = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]    |
[INFO] [stdout] 3  | use crate::crumb::CrumbExt;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `from_crumb` found for type `u64` in the current scope
[INFO] [stdout]  --> src/lib.rs:16:36
[INFO] [stdout]   |
[INFO] [stdout] 9 |     assert_eq!(0b11110000u64, u64::from_crumb(crumb));
[INFO] [stdout]   |                                    ^^^^^^^^^^ function or associated item not found in `u64`
[INFO] [stdout]   |
[INFO] [stdout]   = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::crumb::CrumbExt;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0599.
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 9)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.24s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "a8779256e64cee84b6ccf2d1538c06891a756d687ed011d2db4d5949f20074d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8779256e64cee84b6ccf2d1538c06891a756d687ed011d2db4d5949f20074d7", kill_on_drop: false }`
[INFO] [stdout] a8779256e64cee84b6ccf2d1538c06891a756d687ed011d2db4d5949f20074d7