[INFO] fetching crate standing-relations 0.1.2...
[INFO] checking standing-relations-0.1.2 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate standing-relations 0.1.2 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate standing-relations 0.1.2 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate standing-relations 0.1.2
[INFO] finished tweaking crates.io crate standing-relations 0.1.2
[INFO] tweaked toml for crates.io crate standing-relations 0.1.2 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 40 packages to latest compatible versions
[INFO] [stderr]       Adding encode_unicode v0.3.6 (latest: v1.0.0)
[INFO] [stderr]       Adding linux-raw-sys v0.4.14 (latest: v0.6.5)
[INFO] [stderr]       Adding windows-sys v0.52.0 (latest: v0.59.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded goldenfile v1.7.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6bcf5dd1fb265ccd5d60f9a1bcc22b6d78f3f731874c2c86835be876919cba3e
[INFO] running `Command { std: "docker" "start" "-a" "6bcf5dd1fb265ccd5d60f9a1bcc22b6d78f3f731874c2c86835be876919cba3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6bcf5dd1fb265ccd5d60f9a1bcc22b6d78f3f731874c2c86835be876919cba3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6bcf5dd1fb265ccd5d60f9a1bcc22b6d78f3f731874c2c86835be876919cba3e", kill_on_drop: false }`
[INFO] [stdout] 6bcf5dd1fb265ccd5d60f9a1bcc22b6d78f3f731874c2c86835be876919cba3e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aec4ebd7dd5c97e9976f72bb24b131864c5512fa3c85a30ddfd2b4bd0555543e
[INFO] running `Command { std: "docker" "start" "-a" "aec4ebd7dd5c97e9976f72bb24b131864c5512fa3c85a30ddfd2b4bd0555543e", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-segmentation v1.11.0
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]     Checking yansi v1.0.1
[INFO] [stderr]     Checking console v0.15.8
[INFO] [stderr]     Checking standing-relations v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/core/context/tracking.rs:158:13
[INFO] [stdout]     |
[INFO] [stdout] 158 |         let mut info = &mut self.0[index.0];
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `checked_foreach` is never used
[INFO] [stdout]  --> src/feedback/op/checked_foreach.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait CheckedForeach: Iterator {
[INFO] [stdout]   |           -------------- method in this trait
[INFO] [stdout] 2 |     fn checked_foreach(self, f: impl FnMut(Self::Item)) -> bool;
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking similar v2.6.0
[INFO] [stderr]     Checking similar-asserts v1.5.0
[INFO] [stderr]     Checking goldenfile v1.7.1
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/core/context/tracking.rs:158:13
[INFO] [stdout]     |
[INFO] [stdout] 158 |         let mut info = &mut self.0[index.0];
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `checked_foreach` is never used
[INFO] [stdout]  --> src/feedback/op/checked_foreach.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait CheckedForeach: Iterator {
[INFO] [stdout]   |           -------------- method in this trait
[INFO] [stdout] 2 |     fn checked_foreach(self, f: impl FnMut(Self::Item)) -> bool;
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.41s
[INFO] running `Command { std: "docker" "inspect" "aec4ebd7dd5c97e9976f72bb24b131864c5512fa3c85a30ddfd2b4bd0555543e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aec4ebd7dd5c97e9976f72bb24b131864c5512fa3c85a30ddfd2b4bd0555543e", kill_on_drop: false }`
[INFO] [stdout] aec4ebd7dd5c97e9976f72bb24b131864c5512fa3c85a30ddfd2b4bd0555543e