[INFO] fetching crate rdl 0.2.1...
[INFO] checking rdl-0.2.1 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate rdl 0.2.1 into /workspace/builds/worker-38/source
[INFO] validating manifest of crates.io crate rdl 0.2.1 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rdl 0.2.1
[INFO] finished tweaking crates.io crate rdl 0.2.1
[INFO] tweaked toml for crates.io crate rdl 0.2.1 written to /workspace/builds/worker-38/source/Cargo.toml
[INFO] crate crates.io crate rdl 0.2.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nom v6.2.1
[INFO] [stderr]   Downloaded freedesktop_entry_parser v1.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 421b23bfb4e1cb7cf0ed0c057b468d9c112a1f098b7598b0b581c3bef59f357f
[INFO] running `Command { std: "docker" "start" "-a" "421b23bfb4e1cb7cf0ed0c057b468d9c112a1f098b7598b0b581c3bef59f357f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "421b23bfb4e1cb7cf0ed0c057b468d9c112a1f098b7598b0b581c3bef59f357f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "421b23bfb4e1cb7cf0ed0c057b468d9c112a1f098b7598b0b581c3bef59f357f", kill_on_drop: false }`
[INFO] [stdout] 421b23bfb4e1cb7cf0ed0c057b468d9c112a1f098b7598b0b581c3bef59f357f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] da0ebd4c4b30a6b32633e1f3cc3aaa37f53541626e2a7108693fbe754b5f8f04
[INFO] running `Command { std: "docker" "start" "-a" "da0ebd4c4b30a6b32633e1f3cc3aaa37f53541626e2a7108693fbe754b5f8f04", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling radium v0.5.3
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling libc v0.2.99
[INFO] [stderr]    Compiling lexical-core v0.7.6
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking funty v1.1.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking wyz v0.2.0
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling nom v6.2.1
[INFO] [stderr]     Checking bitvec v0.19.5
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]     Checking thiserror v1.0.26
[INFO] [stderr]     Checking freedesktop_entry_parser v1.2.0
[INFO] [stderr]     Checking rdl v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Stderr`
[INFO] [stdout]   --> src/lib.rs:76:21
[INFO] [stdout]    |
[INFO] [stdout] 76 | use std::io::{self, Stderr};
[INFO] [stdout]    |                     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Stderr`
[INFO] [stdout]   --> src/lib.rs:76:21
[INFO] [stdout]    |
[INFO] [stdout] 76 | use std::io::{self, Stderr};
[INFO] [stdout]    |                     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.88s
[INFO] running `Command { std: "docker" "inspect" "da0ebd4c4b30a6b32633e1f3cc3aaa37f53541626e2a7108693fbe754b5f8f04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da0ebd4c4b30a6b32633e1f3cc3aaa37f53541626e2a7108693fbe754b5f8f04", kill_on_drop: false }`
[INFO] [stdout] da0ebd4c4b30a6b32633e1f3cc3aaa37f53541626e2a7108693fbe754b5f8f04