[INFO] fetching crate truck-topology 0.5.0...
[INFO] checking truck-topology-0.5.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate truck-topology 0.5.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate truck-topology 0.5.0 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 truck-topology 0.5.0
[INFO] finished tweaking crates.io crate truck-topology 0.5.0
[INFO] tweaked toml for crates.io crate truck-topology 0.5.0 written to /workspace/builds/worker-7-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 43 packages
[INFO] [stderr]       Adding approx v0.4.0 (latest: v0.5.1)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[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 matext4cgmath v0.1.0
[INFO] [stderr]   Downloaded katexit v0.1.4
[INFO] [stderr]   Downloaded truck-geotrait v0.3.0
[INFO] [stderr]   Downloaded truck-base v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] ebc1064e4bfef706dfee3315d9e2ebfbbf33c8ee9d42229d0b2678e1016b35f6
[INFO] running `Command { std: "docker" "start" "-a" "ebc1064e4bfef706dfee3315d9e2ebfbbf33c8ee9d42229d0b2678e1016b35f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ebc1064e4bfef706dfee3315d9e2ebfbbf33c8ee9d42229d0b2678e1016b35f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebc1064e4bfef706dfee3315d9e2ebfbbf33c8ee9d42229d0b2678e1016b35f6", kill_on_drop: false }`
[INFO] [stdout] ebc1064e4bfef706dfee3315d9e2ebfbbf33c8ee9d42229d0b2678e1016b35f6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 86f4d8329a368e0978c04bd1c28603d0907942cd0231d56d85d21a0749207ddb
[INFO] running `Command { std: "docker" "start" "-a" "86f4d8329a368e0978c04bd1c28603d0907942cd0231d56d85d21a0749207ddb", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling cgmath v0.18.0
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking approx v0.4.0
[INFO] [stderr]     Checking num-complex v0.4.5
[INFO] [stderr]    Compiling katexit v0.1.4
[INFO] [stderr]     Checking matext4cgmath v0.1.0
[INFO] [stderr]     Checking truck-base v0.4.0
[INFO] [stderr]     Checking truck-geotrait v0.3.0
[INFO] [stderr]     Checking truck-topology v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary qualification
[INFO] [stdout]    --> src/lib.rs:169:45
[INFO] [stdout]     |
[INFO] [stdout] 169 | pub type Result<T> = std::result::Result<T, crate::errors::Error>;
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:76:5
[INFO] [stdout]     |
[INFO] [stdout] 76  |     unused_qualifications
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: remove the unnecessary path segments
[INFO] [stdout]     |
[INFO] [stdout] 169 - pub type Result<T> = std::result::Result<T, crate::errors::Error>;
[INFO] [stdout] 169 + pub type Result<T> = std::result::Result<T, errors::Error>;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Vec` is imported redundantly
[INFO] [stdout]  --> src/shell.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::vec::Vec;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Vec` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Vec` is imported redundantly
[INFO] [stdout]  --> src/solid.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::vec::Vec;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Vec` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `VecDeque` is imported redundantly
[INFO] [stdout]  --> src/wire.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::*;
[INFO] [stdout]   |     -------- the item `VecDeque` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 5 | use std::collections::VecDeque;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary qualification
[INFO] [stdout]    --> src/lib.rs:169:45
[INFO] [stdout]     |
[INFO] [stdout] 169 | pub type Result<T> = std::result::Result<T, crate::errors::Error>;
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:76:5
[INFO] [stdout]     |
[INFO] [stdout] 76  |     unused_qualifications
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: remove the unnecessary path segments
[INFO] [stdout]     |
[INFO] [stdout] 169 - pub type Result<T> = std::result::Result<T, crate::errors::Error>;
[INFO] [stdout] 169 + pub type Result<T> = std::result::Result<T, errors::Error>;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Vec` is imported redundantly
[INFO] [stdout]  --> src/shell.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::vec::Vec;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Vec` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Vec` is imported redundantly
[INFO] [stdout]  --> src/solid.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::vec::Vec;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Vec` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `VecDeque` is imported redundantly
[INFO] [stdout]  --> src/wire.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::*;
[INFO] [stdout]   |     -------- the item `VecDeque` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 5 | use std::collections::VecDeque;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.20s
[INFO] running `Command { std: "docker" "inspect" "86f4d8329a368e0978c04bd1c28603d0907942cd0231d56d85d21a0749207ddb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86f4d8329a368e0978c04bd1c28603d0907942cd0231d56d85d21a0749207ddb", kill_on_drop: false }`
[INFO] [stdout] 86f4d8329a368e0978c04bd1c28603d0907942cd0231d56d85d21a0749207ddb