[INFO] fetching crate conquer-once 0.3.2...
[INFO] checking conquer-once-0.3.2 against try#3d9fdbff4f377de96b3a51174e7a64086bee9a5c for pr-81477
[INFO] extracting crate conquer-once 0.3.2 into /workspace/builds/worker-15/source
[INFO] validating manifest of crates.io crate conquer-once 0.3.2 on toolchain 3d9fdbff4f377de96b3a51174e7a64086bee9a5c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate conquer-once 0.3.2
[INFO] finished tweaking crates.io crate conquer-once 0.3.2
[INFO] tweaked toml for crates.io crate conquer-once 0.3.2 written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 12e1eea9872ff0057506c138202b893c864ae7fd1866b7bf72d9dfc3a9dcf895
[INFO] running `Command { std: "docker" "start" "-a" "12e1eea9872ff0057506c138202b893c864ae7fd1866b7bf72d9dfc3a9dcf895", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "12e1eea9872ff0057506c138202b893c864ae7fd1866b7bf72d9dfc3a9dcf895", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12e1eea9872ff0057506c138202b893c864ae7fd1866b7bf72d9dfc3a9dcf895", kill_on_drop: false }`
[INFO] [stdout] 12e1eea9872ff0057506c138202b893c864ae7fd1866b7bf72d9dfc3a9dcf895
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8a98d3a16b339d9aa29fcdb7328ce78d2389f959c1c5b9dc869bcb7595c2cdc2
[INFO] running `Command { std: "docker" "start" "-a" "8a98d3a16b339d9aa29fcdb7328ce78d2389f959c1c5b9dc869bcb7595c2cdc2", kill_on_drop: false }`
[INFO] [stderr]     Checking conquer-util v0.3.0
[INFO] [stderr]     Checking conquer-once v0.3.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated function `std::sync::atomic::spin_loop_hint`: use hint::spin_loop instead
[INFO] [stdout]  --> src/spin.rs:4:26
[INFO] [stdout]   |
[INFO] [stdout] 4 | use core::sync::atomic::{spin_loop_hint, Ordering};
[INFO] [stdout]   |                          ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::sync::atomic::spin_loop_hint`: use hint::spin_loop instead
[INFO] [stdout]   --> src/spin.rs:81:13
[INFO] [stdout]    |
[INFO] [stdout] 81 |             spin_loop_hint()
[INFO] [stdout]    |             ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::sync::atomic::spin_loop_hint`: use hint::spin_loop instead
[INFO] [stdout]  --> src/spin.rs:4:26
[INFO] [stdout]   |
[INFO] [stdout] 4 | use core::sync::atomic::{spin_loop_hint, Ordering};
[INFO] [stdout]   |                          ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::sync::atomic::spin_loop_hint`: use hint::spin_loop instead
[INFO] [stdout]   --> src/spin.rs:81:13
[INFO] [stdout]    |
[INFO] [stdout] 81 |             spin_loop_hint()
[INFO] [stdout]    |             ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/cell.rs:220:47
[INFO] [stdout]     |
[INFO] [stdout] 220 |             Err(_) if !ignore_panic => panic!(POISON_PANIC_MSG),
[INFO] [stdout]     |                                               ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 220 |             Err(_) if !ignore_panic => panic!("{}", POISON_PANIC_MSG),
[INFO] [stdout]     |                                               ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 220 |             Err(_) if !ignore_panic => std::panic::panic_any(POISON_PANIC_MSG),
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/cell.rs:220:47
[INFO] [stdout]     |
[INFO] [stdout] 220 |             Err(_) if !ignore_panic => panic!(POISON_PANIC_MSG),
[INFO] [stdout]     |                                               ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 220 |             Err(_) if !ignore_panic => panic!("{}", POISON_PANIC_MSG),
[INFO] [stdout]     |                                               ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 220 |             Err(_) if !ignore_panic => std::panic::panic_any(POISON_PANIC_MSG),
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.00s
[INFO] running `Command { std: "docker" "inspect" "8a98d3a16b339d9aa29fcdb7328ce78d2389f959c1c5b9dc869bcb7595c2cdc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a98d3a16b339d9aa29fcdb7328ce78d2389f959c1c5b9dc869bcb7595c2cdc2", kill_on_drop: false }`
[INFO] [stdout] 8a98d3a16b339d9aa29fcdb7328ce78d2389f959c1c5b9dc869bcb7595c2cdc2