[INFO] fetching crate ironstorm_lookup 1.0.4...
[INFO] testing ironstorm_lookup-1.0.4 against 1.54.0 for beta-1.55-1
[INFO] extracting crate ironstorm_lookup 1.0.4 into /workspace/builds/worker-54/source
[INFO] validating manifest of crates.io crate ironstorm_lookup 1.0.4 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 ironstorm_lookup 1.0.4
[INFO] finished tweaking crates.io crate ironstorm_lookup 1.0.4
[INFO] tweaked toml for crates.io crate ironstorm_lookup 1.0.4 written to /workspace/builds/worker-54/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/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] [stdout] c2879407e0e07e326571b57dfd5a396c401f03af7e924c9e9c0a0cdb46086d86
[INFO] running `Command { std: "docker" "start" "-a" "c2879407e0e07e326571b57dfd5a396c401f03af7e924c9e9c0a0cdb46086d86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c2879407e0e07e326571b57dfd5a396c401f03af7e924c9e9c0a0cdb46086d86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2879407e0e07e326571b57dfd5a396c401f03af7e924c9e9c0a0cdb46086d86", kill_on_drop: false }`
[INFO] [stdout] c2879407e0e07e326571b57dfd5a396c401f03af7e924c9e9c0a0cdb46086d86
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/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] ea940d50a264dcd08956dfcaca6cc8d965d046324c1050dcc1f8ff60efed3fdb
[INFO] running `Command { std: "docker" "start" "-a" "ea940d50a264dcd08956dfcaca6cc8d965d046324c1050dcc1f8ff60efed3fdb", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling suffix v1.2.0
[INFO] [stderr]    Compiling itertools v0.5.10
[INFO] [stderr]    Compiling ironstorm_lookup v1.0.4 (/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(btree_range, collections_bound)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:198:56
[INFO] [stdout]     |
[INFO] [stdout] 198 |     pub fn find(&'a self, search_text: &'a str) -> Box<Iterator<Item=&V> + Send + 'a> {
[INFO] [stdout]     |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=&V> + Send + 'a`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 1 argument but 2 arguments were supplied
[INFO] [stdout]     --> src/lib.rs:184:48
[INFO] [stdout]      |
[INFO] [stdout] 184  |         if let Some(value) = self.position_map.range(Unbounded, Included(&(bucket,(text_position as usize)))).rev().next() {
[INFO] [stdout]      |                                                ^^^^^ ---------  -------------------------------------------- supplied 2 arguments
[INFO] [stdout]      |                                                |
[INFO] [stdout]      |                                                expected 1 argument
[INFO] [stdout]      |
[INFO] [stdout] note: associated function defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0061, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0061`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ironstorm_lookup`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "ea940d50a264dcd08956dfcaca6cc8d965d046324c1050dcc1f8ff60efed3fdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea940d50a264dcd08956dfcaca6cc8d965d046324c1050dcc1f8ff60efed3fdb", kill_on_drop: false }`
[INFO] [stdout] ea940d50a264dcd08956dfcaca6cc8d965d046324c1050dcc1f8ff60efed3fdb
