[INFO] fetching crate read_input 0.8.6...
[INFO] checking read_input-0.8.6 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate read_input 0.8.6 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate read_input 0.8.6 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate read_input 0.8.6
[INFO] finished tweaking crates.io crate read_input 0.8.6
[INFO] tweaked toml for crates.io crate read_input 0.8.6 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate read_input 0.8.6 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded crossterm_utils v0.1.0
[INFO] [stderr]   Downloaded crossterm_style v0.2.0
[INFO] [stderr]   Downloaded crossterm_screen v0.1.0
[INFO] [stderr]   Downloaded crossterm_cursor v0.1.0
[INFO] [stderr]   Downloaded crossterm_input v0.2.1
[INFO] [stderr]   Downloaded crossterm_terminal v0.1.0
[INFO] [stderr]   Downloaded crossterm_winapi v0.1.5
[INFO] [stderr]   Downloaded dont_disappear v3.0.1
[INFO] [stderr]   Downloaded crossterm v0.8.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6a6fd54d8e3cbe6e0d229fffcf415db4e124a43ce9c43000c974320ad02c0163
[INFO] running `Command { std: "docker" "start" "-a" "6a6fd54d8e3cbe6e0d229fffcf415db4e124a43ce9c43000c974320ad02c0163", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6a6fd54d8e3cbe6e0d229fffcf415db4e124a43ce9c43000c974320ad02c0163", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a6fd54d8e3cbe6e0d229fffcf415db4e124a43ce9c43000c974320ad02c0163", kill_on_drop: false }`
[INFO] [stdout] 6a6fd54d8e3cbe6e0d229fffcf415db4e124a43ce9c43000c974320ad02c0163
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 79290d96567dde43ca2705994c6219af4857f540ec69a0a32bebe85fc22badd7
[INFO] running `Command { std: "docker" "start" "-a" "79290d96567dde43ca2705994c6219af4857f540ec69a0a32bebe85fc22badd7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.99
[INFO] [stderr]     Checking unicode-bidi v0.3.6
[INFO] [stderr]     Checking tinyvec v1.3.1
[INFO] [stderr]     Checking read_input v0.8.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `ToString` is imported redundantly
[INFO] [stdout]  --> src/core.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     string::ToString,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `ToString` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `PartialOrd` is imported redundantly
[INFO] [stdout]  --> src/test_generators.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     cmp::PartialOrd,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `PartialOrd` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `PartialOrd` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:77:11
[INFO] [stdout]    |
[INFO] [stdout] 77 | use std::{cmp::PartialOrd, io, rc::Rc, str::FromStr, string::ToString};
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `PartialOrd` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ToString` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:77:54
[INFO] [stdout]    |
[INFO] [stdout] 77 | use std::{cmp::PartialOrd, io, rc::Rc, str::FromStr, string::ToString};
[INFO] [stdout]    |                                                      ^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `ToString` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]     Checking termios v0.3.3
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking crossterm_utils v0.1.0
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking crossterm_screen v0.1.0
[INFO] [stderr]     Checking crossterm_cursor v0.1.0
[INFO] [stderr]     Checking crossterm_style v0.2.0
[INFO] [stderr]     Checking crossterm_terminal v0.1.0
[INFO] [stderr]     Checking crossterm_input v0.2.1
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking crossterm v0.8.2
[INFO] [stderr]     Checking dont_disappear v3.0.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stdout] warning: the item `ToString` is imported redundantly
[INFO] [stdout]  --> src/core.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     string::ToString,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `ToString` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `PartialOrd` is imported redundantly
[INFO] [stdout]  --> src/test_generators.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     cmp::PartialOrd,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `PartialOrd` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `PartialOrd` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:77:11
[INFO] [stdout]    |
[INFO] [stdout] 77 | use std::{cmp::PartialOrd, io, rc::Rc, str::FromStr, string::ToString};
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `PartialOrd` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ToString` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:77:54
[INFO] [stdout]    |
[INFO] [stdout] 77 | use std::{cmp::PartialOrd, io, rc::Rc, str::FromStr, string::ToString};
[INFO] [stdout]    |                                                      ^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `ToString` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.52s
[INFO] running `Command { std: "docker" "inspect" "79290d96567dde43ca2705994c6219af4857f540ec69a0a32bebe85fc22badd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79290d96567dde43ca2705994c6219af4857f540ec69a0a32bebe85fc22badd7", kill_on_drop: false }`
[INFO] [stdout] 79290d96567dde43ca2705994c6219af4857f540ec69a0a32bebe85fc22badd7