[INFO] fetching crate map-trait 0.3.1...
[INFO] testing map-trait-0.3.1 against 1.54.0 for beta-1.55-1
[INFO] extracting crate map-trait 0.3.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate map-trait 0.3.1 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate map-trait 0.3.1
[INFO] finished tweaking crates.io crate map-trait 0.3.1
[INFO] tweaked toml for crates.io crate map-trait 0.3.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", 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] 3814c50f5e0022e15bc658c480c03a80f7166eb8d80d6001addf5e08679c486c
[INFO] running `Command { std: "docker" "start" "-a" "3814c50f5e0022e15bc658c480c03a80f7166eb8d80d6001addf5e08679c486c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3814c50f5e0022e15bc658c480c03a80f7166eb8d80d6001addf5e08679c486c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3814c50f5e0022e15bc658c480c03a80f7166eb8d80d6001addf5e08679c486c", kill_on_drop: false }`
[INFO] [stdout] 3814c50f5e0022e15bc658c480c03a80f7166eb8d80d6001addf5e08679c486c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 748b39d90f65e764b00051a2e11a74dc14434ace46340f2bc5fe91de2cf68caa
[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" "748b39d90f65e764b00051a2e11a74dc14434ace46340f2bc5fe91de2cf68caa", kill_on_drop: false }`
[INFO] [stderr]    Compiling map-trait v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(generic_associated_types)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0478]: lifetime bound not satisfied
[INFO] [stdout]    --> src/map.rs:99:5
[INFO] [stdout]     |
[INFO] [stdout] 99  | /     fn get<'a, Q: ?Sized>(&'a self, k: &Q) -> Option<Self::GetGuard<'a>>
[INFO] [stdout] 100 | |     where
[INFO] [stdout] 101 | |         K: Borrow<Q>,
[INFO] [stdout] 102 | |         Q: Hash + Eq,
[INFO] [stdout] 103 | |     {
[INFO] [stdout] 104 | |         std::collections::HashMap::get(self, k)
[INFO] [stdout] 105 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout] note: lifetime parameter instantiated with the lifetime `'m` as defined on the impl at 90:6
[INFO] [stdout]    --> src/map.rs:90:6
[INFO] [stdout]     |
[INFO] [stdout] 90  | impl<'m, K, V, S> Map<'m, K, V> for std::collections::HashMap<K, V, S>
[INFO] [stdout]     |      ^^
[INFO] [stdout] note: but lifetime parameter must outlive the lifetime `'a` as defined on the method body at 99:12
[INFO] [stdout]    --> src/map.rs:99:12
[INFO] [stdout]     |
[INFO] [stdout] 99  |     fn get<'a, Q: ?Sized>(&'a self, k: &Q) -> Option<Self::GetGuard<'a>>
[INFO] [stdout]     |            ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0495]: cannot infer an appropriate lifetime for lifetime parameter 'a in generic type due to conflicting requirements
[INFO] [stdout]    --> src/map.rs:99:5
[INFO] [stdout]     |
[INFO] [stdout] 99  | /     fn get<'a, Q: ?Sized>(&'a self, k: &Q) -> Option<Self::GetGuard<'a>>
[INFO] [stdout] 100 | |     where
[INFO] [stdout] 101 | |         K: Borrow<Q>,
[INFO] [stdout] 102 | |         Q: Hash + Eq,
[INFO] [stdout] 103 | |     {
[INFO] [stdout] 104 | |         std::collections::HashMap::get(self, k)
[INFO] [stdout] 105 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout] note: first, the lifetime cannot outlive the lifetime `'m` as defined on the impl at 90:6...
[INFO] [stdout]    --> src/map.rs:90:6
[INFO] [stdout]     |
[INFO] [stdout] 90  | impl<'m, K, V, S> Map<'m, K, V> for std::collections::HashMap<K, V, S>
[INFO] [stdout]     |      ^^
[INFO] [stdout] note: ...so that the declared lifetime parameter bounds are satisfied
[INFO] [stdout]    --> src/map.rs:99:5
[INFO] [stdout]     |
[INFO] [stdout] 99  | /     fn get<'a, Q: ?Sized>(&'a self, k: &Q) -> Option<Self::GetGuard<'a>>
[INFO] [stdout] 100 | |     where
[INFO] [stdout] 101 | |         K: Borrow<Q>,
[INFO] [stdout] 102 | |         Q: Hash + Eq,
[INFO] [stdout] 103 | |     {
[INFO] [stdout] 104 | |         std::collections::HashMap::get(self, k)
[INFO] [stdout] 105 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] note: but, the lifetime must be valid for the lifetime `'a` as defined on the method body at 99:12...
[INFO] [stdout]    --> src/map.rs:99:12
[INFO] [stdout]     |
[INFO] [stdout] 99  |     fn get<'a, Q: ?Sized>(&'a self, k: &Q) -> Option<Self::GetGuard<'a>>
[INFO] [stdout]     |            ^^
[INFO] [stdout] note: ...so that the method type is compatible with trait
[INFO] [stdout]    --> src/map.rs:99:5
[INFO] [stdout]     |
[INFO] [stdout] 99  | /     fn get<'a, Q: ?Sized>(&'a self, k: &Q) -> Option<Self::GetGuard<'a>>
[INFO] [stdout] 100 | |     where
[INFO] [stdout] 101 | |         K: Borrow<Q>,
[INFO] [stdout] 102 | |         Q: Hash + Eq,
[INFO] [stdout] 103 | |     {
[INFO] [stdout] 104 | |         std::collections::HashMap::get(self, k)
[INFO] [stdout] 105 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     = note: expected `fn(&'a HashMap<K, V, S>, &Q) -> Option<&'a V>`
[INFO] [stdout]                found `fn(&HashMap<K, V, S>, &Q) -> Option<&V>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0478]: lifetime bound not satisfied
[INFO] [stdout]    --> src/map.rs:121:5
[INFO] [stdout]     |
[INFO] [stdout] 121 | /     fn get<'a, Q: ?Sized>(&'a self, k: &Q) -> Option<Self::GetGuard<'a>>
[INFO] [stdout] 122 | |     where
[INFO] [stdout] 123 | |         K: Borrow<Q>,
[INFO] [stdout] 124 | |         Q: Ord,
[INFO] [stdout] 125 | |     {
[INFO] [stdout] 126 | |         std::collections::BTreeMap::get(self, k)
[INFO] [stdout] 127 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout] note: lifetime parameter instantiated with the lifetime `'m` as defined on the impl at 113:6
[INFO] [stdout]    --> src/map.rs:113:6
[INFO] [stdout]     |
[INFO] [stdout] 113 | impl<'m, K, V> Map<'m, K, V> for std::collections::BTreeMap<K, V>
[INFO] [stdout]     |      ^^
[INFO] [stdout] note: but lifetime parameter must outlive the lifetime `'a` as defined on the method body at 121:12
[INFO] [stdout]    --> src/map.rs:121:12
[INFO] [stdout]     |
[INFO] [stdout] 121 |     fn get<'a, Q: ?Sized>(&'a self, k: &Q) -> Option<Self::GetGuard<'a>>
[INFO] [stdout]     |            ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0495]: cannot infer an appropriate lifetime for lifetime parameter 'a in generic type due to conflicting requirements
[INFO] [stdout]    --> src/map.rs:121:5
[INFO] [stdout]     |
[INFO] [stdout] 121 | /     fn get<'a, Q: ?Sized>(&'a self, k: &Q) -> Option<Self::GetGuard<'a>>
[INFO] [stdout] 122 | |     where
[INFO] [stdout] 123 | |         K: Borrow<Q>,
[INFO] [stdout] 124 | |         Q: Ord,
[INFO] [stdout] 125 | |     {
[INFO] [stdout] 126 | |         std::collections::BTreeMap::get(self, k)
[INFO] [stdout] 127 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout] note: first, the lifetime cannot outlive the lifetime `'m` as defined on the impl at 113:6...
[INFO] [stdout]    --> src/map.rs:113:6
[INFO] [stdout]     |
[INFO] [stdout] 113 | impl<'m, K, V> Map<'m, K, V> for std::collections::BTreeMap<K, V>
[INFO] [stdout]     |      ^^
[INFO] [stdout] note: ...so that the declared lifetime parameter bounds are satisfied
[INFO] [stdout]    --> src/map.rs:121:5
[INFO] [stdout]     |
[INFO] [stdout] 121 | /     fn get<'a, Q: ?Sized>(&'a self, k: &Q) -> Option<Self::GetGuard<'a>>
[INFO] [stdout] 122 | |     where
[INFO] [stdout] 123 | |         K: Borrow<Q>,
[INFO] [stdout] 124 | |         Q: Ord,
[INFO] [stdout] 125 | |     {
[INFO] [stdout] 126 | |         std::collections::BTreeMap::get(self, k)
[INFO] [stdout] 127 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] note: but, the lifetime must be valid for the lifetime `'a` as defined on the method body at 121:12...
[INFO] [stdout]    --> src/map.rs:121:12
[INFO] [stdout]     |
[INFO] [stdout] 121 |     fn get<'a, Q: ?Sized>(&'a self, k: &Q) -> Option<Self::GetGuard<'a>>
[INFO] [stdout]     |            ^^
[INFO] [stdout] note: ...so that the method type is compatible with trait
[INFO] [stdout]    --> src/map.rs:121:5
[INFO] [stdout]     |
[INFO] [stdout] 121 | /     fn get<'a, Q: ?Sized>(&'a self, k: &Q) -> Option<Self::GetGuard<'a>>
[INFO] [stdout] 122 | |     where
[INFO] [stdout] 123 | |         K: Borrow<Q>,
[INFO] [stdout] 124 | |         Q: Ord,
[INFO] [stdout] 125 | |     {
[INFO] [stdout] 126 | |         std::collections::BTreeMap::get(self, k)
[INFO] [stdout] 127 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     = note: expected `fn(&'a BTreeMap<K, V>, &Q) -> Option<&'a V>`
[INFO] [stdout]                found `fn(&BTreeMap<K, V>, &Q) -> Option<&V>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0478]: lifetime bound not satisfied
[INFO] [stdout]    --> src/map.rs:103:5
[INFO] [stdout]     |
[INFO] [stdout] 103 | /     {
[INFO] [stdout] 104 | |         std::collections::HashMap::get(self, k)
[INFO] [stdout] 105 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout] note: lifetime parameter instantiated with the lifetime `'m` as defined on the impl at 90:6
[INFO] [stdout]    --> src/map.rs:90:6
[INFO] [stdout]     |
[INFO] [stdout] 90  | impl<'m, K, V, S> Map<'m, K, V> for std::collections::HashMap<K, V, S>
[INFO] [stdout]     |      ^^
[INFO] [stdout] note: but lifetime parameter must outlive the lifetime `'a` as defined on the method body at 99:12
[INFO] [stdout]    --> src/map.rs:99:12
[INFO] [stdout]     |
[INFO] [stdout] 99  |     fn get<'a, Q: ?Sized>(&'a self, k: &Q) -> Option<Self::GetGuard<'a>>
[INFO] [stdout]     |            ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0478]: lifetime bound not satisfied
[INFO] [stdout]    --> src/map.rs:125:5
[INFO] [stdout]     |
[INFO] [stdout] 125 | /     {
[INFO] [stdout] 126 | |         std::collections::BTreeMap::get(self, k)
[INFO] [stdout] 127 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout] note: lifetime parameter instantiated with the lifetime `'m` as defined on the impl at 113:6
[INFO] [stdout]    --> src/map.rs:113:6
[INFO] [stdout]     |
[INFO] [stdout] 113 | impl<'m, K, V> Map<'m, K, V> for std::collections::BTreeMap<K, V>
[INFO] [stdout]     |      ^^
[INFO] [stdout] note: but lifetime parameter must outlive the lifetime `'a` as defined on the method body at 121:12
[INFO] [stdout]    --> src/map.rs:121:12
[INFO] [stdout]     |
[INFO] [stdout] 121 |     fn get<'a, Q: ?Sized>(&'a self, k: &Q) -> Option<Self::GetGuard<'a>>
[INFO] [stdout]     |            ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 7 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0478, E0495, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0478`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `map-trait`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "748b39d90f65e764b00051a2e11a74dc14434ace46340f2bc5fe91de2cf68caa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "748b39d90f65e764b00051a2e11a74dc14434ace46340f2bc5fe91de2cf68caa", kill_on_drop: false }`
[INFO] [stdout] 748b39d90f65e764b00051a2e11a74dc14434ace46340f2bc5fe91de2cf68caa
