[INFO] fetching crate cronus_spec 0.6.3...
[INFO] checking cronus_spec-0.6.3 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate cronus_spec 0.6.3 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate cronus_spec 0.6.3
[INFO] finished tweaking crates.io crate cronus_spec 0.6.3
[INFO] tweaked toml for crates.io crate cronus_spec 0.6.3 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate cronus_spec 0.6.3 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate cronus_spec 0.6.3 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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 59740d6540537aaf9d19b4f452ade69a6c93e80d64f708d546abac2105ceb296
[INFO] running `Command { std: "docker" "start" "-a" "59740d6540537aaf9d19b4f452ade69a6c93e80d64f708d546abac2105ceb296", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "59740d6540537aaf9d19b4f452ade69a6c93e80d64f708d546abac2105ceb296", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59740d6540537aaf9d19b4f452ade69a6c93e80d64f708d546abac2105ceb296", kill_on_drop: false }`
[INFO] [stdout] 59740d6540537aaf9d19b4f452ade69a6c93e80d64f708d546abac2105ceb296
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ec5883bfa0c5656ecbbff69927d07573b48b5f3a460ade839d0fa73a667703ff
[INFO] running `Command { std: "docker" "start" "-a" "ec5883bfa0c5656ecbbff69927d07573b48b5f3a460ade839d0fa73a667703ff", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.94
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling anyhow v1.0.80
[INFO] [stderr]     Checking ryu v1.0.15
[INFO] [stderr]     Checking unsafe-libyaml v0.2.11
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]     Checking serde_yaml v0.9.34+deprecated
[INFO] [stderr]     Checking cronus_spec v0.6.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Path`, `VecDeque`, and `fs`
[INFO] [stdout]  --> src/lib.rs:1:34
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::{HashMap, VecDeque}, error::Error, fs, path::{Path, PathBuf}, sync::Arc};
[INFO] [stdout]   |                                  ^^^^^^^^                 ^^         ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Path`, `VecDeque`, and `fs`
[INFO] [stdout]  --> src/lib.rs:1:34
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::{HashMap, VecDeque}, error::Error, fs, path::{Path, PathBuf}, sync::Arc};
[INFO] [stdout]   |                                  ^^^^^^^^                 ^^         ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `error::Error`
[INFO] [stdout]  --> src/lib.rs:1:45
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::{HashMap, VecDeque}, error::Error, fs, path::{Path, PathBuf}, sync::Arc};
[INFO] [stdout]   |                                             ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `error::Error`
[INFO] [stdout]  --> src/lib.rs:1:45
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::{HashMap, VecDeque}, error::Error, fs, path::{Path, PathBuf}, sync::Arc};
[INFO] [stdout]   |                                             ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.75s
[INFO] running `Command { std: "docker" "inspect" "ec5883bfa0c5656ecbbff69927d07573b48b5f3a460ade839d0fa73a667703ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec5883bfa0c5656ecbbff69927d07573b48b5f3a460ade839d0fa73a667703ff", kill_on_drop: false }`
[INFO] [stdout] ec5883bfa0c5656ecbbff69927d07573b48b5f3a460ade839d0fa73a667703ff