[INFO] fetching crate fall 0.1.2...
[INFO] checking fall-0.1.2 against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] extracting crate fall 0.1.2 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate fall 0.1.2 on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fall 0.1.2
[INFO] finished tweaking crates.io crate fall 0.1.2
[INFO] tweaked toml for crates.io crate fall 0.1.2 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ena v0.11.0
[INFO] [stderr]   Downloaded lalrpop-util v0.16.3
[INFO] [stderr]   Downloaded frunk_derives v0.2.4
[INFO] [stderr]   Downloaded ascii-canvas v1.0.0
[INFO] [stderr]   Downloaded lalrpop v0.16.3
[INFO] [stderr]   Downloaded frunk_core v0.2.4
[INFO] [stderr]   Downloaded frunk v0.2.4
[INFO] [stderr]   Downloaded frunk_proc_macro_helpers v0.0.2
[INFO] [stderr]   Downloaded frunk_proc_macros v0.0.2
[INFO] [stderr]   Downloaded frunk_proc_macros_impl v0.0.2
[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" "rustops/crates-build-env@sha256:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b3050f2d43c121b6932c8091fa15f2676a491060c0d5264ec1ca59b2d417ac42
[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" "b3050f2d43c121b6932c8091fa15f2676a491060c0d5264ec1ca59b2d417ac42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b3050f2d43c121b6932c8091fa15f2676a491060c0d5264ec1ca59b2d417ac42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3050f2d43c121b6932c8091fa15f2676a491060c0d5264ec1ca59b2d417ac42", kill_on_drop: false }`
[INFO] [stdout] b3050f2d43c121b6932c8091fa15f2676a491060c0d5264ec1ca59b2d417ac42
[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" "rustops/crates-build-env@sha256:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "check" "--frozen" "--all" "--all-targets" "--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] c85d37672e0f5e5d943a42739c5b67d71da48da832273080decf785e41dfda57
[INFO] running `Command { std: "docker" "start" "-a" "c85d37672e0f5e5d943a42739c5b67d71da48da832273080decf785e41dfda57", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling string_cache_shared v0.3.0
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling frunk_core v0.2.4
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.4
[INFO] [stderr]    Compiling ordermap v0.3.5
[INFO] [stderr]    Compiling fixedbitset v0.1.9
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling bit-vec v0.6.2
[INFO] [stderr]     Checking gimli v0.22.0
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]    Compiling proc-macro-hack v0.5.18
[INFO] [stderr]    Compiling diff v0.1.12
[INFO] [stderr]    Compiling lalrpop-util v0.16.3
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking object v0.20.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking futures v0.1.29
[INFO] [stderr]    Compiling ascii-canvas v1.0.0
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]     Checking miniz_oxide v0.4.1
[INFO] [stderr]    Compiling bit-set v0.5.2
[INFO] [stderr]    Compiling petgraph v0.4.13
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling ena v0.11.0
[INFO] [stderr]     Checking aho-corasick v0.7.13
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]    Compiling generic-array v0.12.3
[INFO] [stderr]     Checking addr2line v0.13.0
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling digest v0.8.1
[INFO] [stderr]    Compiling sha2 v0.8.2
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling string_cache_codegen v0.4.4
[INFO] [stderr]    Compiling string_cache v0.7.5
[INFO] [stderr]     Checking backtrace v0.3.50
[INFO] [stderr]    Compiling frunk_proc_macro_helpers v0.0.2
[INFO] [stderr]    Compiling frunk_proc_macros_impl v0.0.2
[INFO] [stderr]    Compiling frunk_derives v0.2.4
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]     Checking frunk_proc_macros v0.0.2
[INFO] [stderr]     Checking frunk v0.2.4
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]    Compiling docopt v1.1.0
[INFO] [stderr]    Compiling lalrpop v0.16.3
[INFO] [stderr]    Compiling fall v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/eval.rs:69:14
[INFO] [stdout]    |
[INFO] [stdout] 69 |     ) -> Box<Stream<Item = Subst, Error = E> + Send> {
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Stream<Item = Subst, Error = E> + Send`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/eval.rs:90:14
[INFO] [stdout]    |
[INFO] [stdout] 90 |     ) -> Box<Stream<Item = Subst, Error = E> + Send> {
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Stream<Item = Subst, Error = E> + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/util.rs:10:46
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn box_stream<E, S, T>(stream: S) -> Box<Stream<Item = T, Error = E> + Send>
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Stream<Item = T, Error = E> + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/fall-ff73f876c6791761/out/grammar.rs:4966:5
[INFO] [stdout]      |
[INFO] [stdout] 4966 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/fall-ff73f876c6791761/out/grammar.rs:4977:5
[INFO] [stdout]      |
[INFO] [stdout] 4977 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/fall-ff73f876c6791761/out/grammar.rs:4988:5
[INFO] [stdout]      |
[INFO] [stdout] 4988 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/fall-ff73f876c6791761/out/grammar.rs:4999:5
[INFO] [stdout]      |
[INFO] [stdout] 4999 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/eval.rs:69:14
[INFO] [stdout]    |
[INFO] [stdout] 69 |     ) -> Box<Stream<Item = Subst, Error = E> + Send> {
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Stream<Item = Subst, Error = E> + Send`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/eval.rs:90:14
[INFO] [stdout]    |
[INFO] [stdout] 90 |     ) -> Box<Stream<Item = Subst, Error = E> + Send> {
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Stream<Item = Subst, Error = E> + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/util.rs:10:46
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn box_stream<E, S, T>(stream: S) -> Box<Stream<Item = T, Error = E> + Send>
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Stream<Item = T, Error = E> + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/fall-ff73f876c6791761/out/grammar.rs:4966:5
[INFO] [stdout]      |
[INFO] [stdout] 4966 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/fall-ff73f876c6791761/out/grammar.rs:4977:5
[INFO] [stdout]      |
[INFO] [stdout] 4977 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/fall-ff73f876c6791761/out/grammar.rs:4988:5
[INFO] [stdout]      |
[INFO] [stdout] 4988 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/fall-ff73f876c6791761/out/grammar.rs:4999:5
[INFO] [stdout]      |
[INFO] [stdout] 4999 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 34s
[INFO] running `Command { std: "docker" "inspect" "c85d37672e0f5e5d943a42739c5b67d71da48da832273080decf785e41dfda57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c85d37672e0f5e5d943a42739c5b67d71da48da832273080decf785e41dfda57", kill_on_drop: false }`
[INFO] [stdout] c85d37672e0f5e5d943a42739c5b67d71da48da832273080decf785e41dfda57