[INFO] fetching crate loro-rle 0.1.0...
[INFO] checking loro-rle-0.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate loro-rle 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate loro-rle 0.1.0 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate loro-rle 0.1.0
[INFO] finished tweaking crates.io crate loro-rle 0.1.0
[INFO] tweaked toml for crates.io crate loro-rle 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate loro-rle 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded aliasable v0.1.3
[INFO] [stderr]   Downloaded ouroboros v0.15.6
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d9d8efa6a5b31a771a89fd7d274e52968b1932e53ef66c22e7a7df6e1d893c36
[INFO] running `Command { std: "docker" "start" "-a" "d9d8efa6a5b31a771a89fd7d274e52968b1932e53ef66c22e7a7df6e1d893c36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d9d8efa6a5b31a771a89fd7d274e52968b1932e53ef66c22e7a7df6e1d893c36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9d8efa6a5b31a771a89fd7d274e52968b1932e53ef66c22e7a7df6e1d893c36", kill_on_drop: false }`
[INFO] [stdout] d9d8efa6a5b31a771a89fd7d274e52968b1932e53ef66c22e7a7df6e1d893c36
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7fa2d75a53b8902c251cdac23684da74aa0dbf59415b1418de87f6d467534fa3
[INFO] running `Command { std: "docker" "start" "-a" "7fa2d75a53b8902c251cdac23684da74aa0dbf59415b1418de87f6d467534fa3", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.67
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling quote v1.0.29
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling semver v1.0.16
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling cc v1.0.78
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking gimli v0.27.0
[INFO] [stderr]    Compiling Inflector v0.11.4
[INFO] [stderr]     Checking fastrand v1.8.0
[INFO] [stderr]     Checking spin v0.9.4
[INFO] [stderr]    Compiling heapless v0.7.16
[INFO] [stderr]     Checking tempfile v3.3.0
[INFO] [stderr]     Checking object v0.30.2
[INFO] [stderr]     Checking miniz_oxide v0.6.2
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[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]    Compiling backtrace v0.3.67
[INFO] [stderr]     Checking hash32 v0.2.1
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[INFO] [stderr]    Compiling smartstring v1.0.1
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
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[INFO] [stderr]     Checking aliasable v0.1.3
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[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]     Checking proptest v1.0.0
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking addr2line v0.19.0
[INFO] [stderr]    Compiling ouroboros_macro v0.15.6
[INFO] [stderr]    Compiling enum-as-inner v0.5.1
[INFO] [stderr]    Compiling ctor v0.1.26
[INFO] [stderr]     Checking color-backtrace v0.5.1
[INFO] [stderr]     Checking ouroboros v0.15.6
[INFO] [stderr]     Checking loro-rle v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Debug` is imported redundantly
[INFO] [stdout]   --> src/rle_tree/node/internal_impl.rs:3:11
[INFO] [stdout]    |
[INFO] [stdout] 3  |     fmt::{Debug, Error, Formatter},
[INFO] [stdout]    |           ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 | use super::*;
[INFO] [stdout]    |     -------- the item `Debug` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `VecTrait` is imported redundantly
[INFO] [stdout]   --> src/rle_tree/node/internal_impl.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |         arena::VecTrait,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 | use super::*;
[INFO] [stdout]    |     -------- the item `VecTrait` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `VecTrait` is imported redundantly
[INFO] [stdout]   --> src/rle_tree/node/leaf_impl.rs:5:9
[INFO] [stdout]    |
[INFO] [stdout] 5  |         arena::VecTrait,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 13 | use super::{utils::distribute, *};
[INFO] [stdout]    |                                - the item `VecTrait` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Debug` is imported redundantly
[INFO] [stdout]   --> src/rle_tree/node/leaf_impl.rs:11:16
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::fmt::{Debug, Error, Formatter};
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout] 12 |
[INFO] [stdout] 13 | use super::{utils::distribute, *};
[INFO] [stdout]    |                                - the item `Debug` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Debug` is imported redundantly
[INFO] [stdout]   --> src/rle_tree/node/internal_impl.rs:3:11
[INFO] [stdout]    |
[INFO] [stdout] 3  |     fmt::{Debug, Error, Formatter},
[INFO] [stdout]    |           ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 | use super::*;
[INFO] [stdout]    |     -------- the item `Debug` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `VecTrait` is imported redundantly
[INFO] [stdout]   --> src/rle_tree/node/internal_impl.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |         arena::VecTrait,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 | use super::*;
[INFO] [stdout]    |     -------- the item `VecTrait` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `VecTrait` is imported redundantly
[INFO] [stdout]   --> src/rle_tree/node/leaf_impl.rs:5:9
[INFO] [stdout]    |
[INFO] [stdout] 5  |         arena::VecTrait,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 13 | use super::{utils::distribute, *};
[INFO] [stdout]    |                                - the item `VecTrait` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Debug` is imported redundantly
[INFO] [stdout]   --> src/rle_tree/node/leaf_impl.rs:11:16
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::fmt::{Debug, Error, Formatter};
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout] 12 |
[INFO] [stdout] 13 | use super::{utils::distribute, *};
[INFO] [stdout]    |                                - the item `Debug` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `NonNull` is imported redundantly
[INFO] [stdout]   --> src/rle_tree/test/notify_prop_test.rs:11:23
[INFO] [stdout]    |
[INFO] [stdout] 10 | use super::super::*;
[INFO] [stdout]    |     --------------- the item `NonNull` is already imported here
[INFO] [stdout] 11 | use std::{ops::Deref, ptr::NonNull};
[INFO] [stdout]    |                       ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused implementer of `Iterator` that must be used
[INFO] [stdout]    --> src/range_map.rs:283:17
[INFO] [stdout]     |
[INFO] [stdout] 283 |                 leaf.children.drain(start..end);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: iterators are lazy and do nothing unless consumed
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused implementer of `Iterator` that must be used
[INFO] [stdout]    --> src/range_map.rs:283:17
[INFO] [stdout]     |
[INFO] [stdout] 283 |                 leaf.children.drain(start..end);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: iterators are lazy and do nothing unless consumed
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 25.05s
[INFO] running `Command { std: "docker" "inspect" "7fa2d75a53b8902c251cdac23684da74aa0dbf59415b1418de87f6d467534fa3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fa2d75a53b8902c251cdac23684da74aa0dbf59415b1418de87f6d467534fa3", kill_on_drop: false }`
[INFO] [stdout] 7fa2d75a53b8902c251cdac23684da74aa0dbf59415b1418de87f6d467534fa3