[INFO] fetching crate distant-protocol 0.20.0...
[INFO] checking distant-protocol-0.20.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate distant-protocol 0.20.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate distant-protocol 0.20.0 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate distant-protocol 0.20.0
[INFO] finished tweaking crates.io crate distant-protocol 0.20.0
[INFO] tweaked toml for crates.io crate distant-protocol 0.20.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 32 packages
[INFO] [stderr]       Adding convert_case v0.4.0 (latest: v0.6.0)
[INFO] [stderr]       Adding heck v0.4.1 (latest: v0.5.0)
[INFO] [stderr]       Adding strum v0.24.1 (latest: v0.26.2)
[INFO] [stderr]       Adding strum_macros v0.24.3 (latest: v0.26.2)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded const-str v0.5.7
[INFO] [stderr]   Downloaded rmp-serde v1.1.2
[INFO] [stderr]   Downloaded rmp v0.8.12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9c41c7dae161bbbc80fcf39b8293c6e6c44e441296d294645dddf9229920b439
[INFO] running `Command { std: "docker" "start" "-a" "9c41c7dae161bbbc80fcf39b8293c6e6c44e441296d294645dddf9229920b439", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9c41c7dae161bbbc80fcf39b8293c6e6c44e441296d294645dddf9229920b439", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c41c7dae161bbbc80fcf39b8293c6e6c44e441296d294645dddf9229920b439", kill_on_drop: false }`
[INFO] [stdout] 9c41c7dae161bbbc80fcf39b8293c6e6c44e441296d294645dddf9229920b439
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ff9f2339f90b00245c793c051351294adf063911c6e9111c1efcaea13196342b
[INFO] running `Command { std: "docker" "start" "-a" "ff9f2339f90b00245c793c051351294adf063911c6e9111c1efcaea13196342b", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling rustversion v1.0.14
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling semver v1.0.22
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking const-str v0.5.7
[INFO] [stderr]     Checking rmp v0.8.12
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling strum_macros v0.24.3
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]     Checking strum v0.24.1
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking serde_bytes v0.11.14
[INFO] [stderr]     Checking serde_json v1.0.115
[INFO] [stderr]     Checking rmp-serde v1.1.2
[INFO] [stderr]     Checking distant-protocol v0.20.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `FromIterator` is imported redundantly
[INFO] [stdout]  --> src/common/change.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::iter::FromIterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `FromIterator` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `semver` is imported redundantly
[INFO] [stdout]  --> src/common/version.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::semver;
[INFO] [stdout]   |     ^^^^^^^^^^^^^ the item `semver` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `FromIterator` is imported redundantly
[INFO] [stdout]  --> src/common/change.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::iter::FromIterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `FromIterator` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `SearchQueryMatch` is imported redundantly
[INFO] [stdout]     --> src/response.rs:1355:55
[INFO] [stdout]      |
[INFO] [stdout] 1354 |         use super::*;
[INFO] [stdout]      |             -------- the item `SearchQueryMatch` is already imported here
[INFO] [stdout] 1355 |         use crate::common::{SearchQueryContentsMatch, SearchQueryMatch, SearchQuerySubmatch};
[INFO] [stdout]      |                                                       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.74s
[INFO] running `Command { std: "docker" "inspect" "ff9f2339f90b00245c793c051351294adf063911c6e9111c1efcaea13196342b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff9f2339f90b00245c793c051351294adf063911c6e9111c1efcaea13196342b", kill_on_drop: false }`
[INFO] [stdout] ff9f2339f90b00245c793c051351294adf063911c6e9111c1efcaea13196342b