[INFO] fetching crate hp-log 0.3.1...
[INFO] testing hp-log-0.3.1 against 1.59.0 for beta-1.60-1
[INFO] extracting crate hp-log 0.3.1 into /workspace/builds/worker-105/source
[INFO] validating manifest of crates.io crate hp-log 0.3.1 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate hp-log 0.3.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate hp-log 0.3.1
[INFO] tweaked toml for crates.io crate hp-log 0.3.1 written to /workspace/builds/worker-105/source/Cargo.toml
[INFO] crate crates.io crate hp-log 0.3.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "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-105/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cfdd9b5ddf9084b9772a415f32094644befe3401cbfb5b374cfbc3788e2b144b
[INFO] running `Command { std: "docker" "start" "-a" "cfdd9b5ddf9084b9772a415f32094644befe3401cbfb5b374cfbc3788e2b144b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cfdd9b5ddf9084b9772a415f32094644befe3401cbfb5b374cfbc3788e2b144b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cfdd9b5ddf9084b9772a415f32094644befe3401cbfb5b374cfbc3788e2b144b", kill_on_drop: false }`
[INFO] [stdout] cfdd9b5ddf9084b9772a415f32094644befe3401cbfb5b374cfbc3788e2b144b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 21d910ac0ce4c47f92d42ab63ce0519231ddf69f78494762b24b1a8f56d4a457
[INFO] running `Command { std: "docker" "start" "-a" "21d910ac0ce4c47f92d42ab63ce0519231ddf69f78494762b24b1a8f56d4a457", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling libc v0.2.58
[INFO] [stderr]    Compiling syn v0.15.39
[INFO] [stderr]    Compiling serde v1.0.94
[INFO] [stderr]    Compiling cfg-if v0.1.9
[INFO] [stderr]    Compiling strfmt v0.1.6
[INFO] [stderr]    Compiling lazy_static v1.3.0
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]    Compiling toml v0.4.10
[INFO] [stderr]    Compiling serde_derive v1.0.94
[INFO] [stderr]    Compiling hp-log v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:2
[INFO] [stdout]   |
[INFO] [stdout] 2 |  #![feature(rustc_private)]
[INFO] [stdout]   |  ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]  --> src/config.rs:5:23
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::sync::{Once, ONCE_INIT};
[INFO] [stdout]   |                       ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]  --> src/config.rs:8:26
[INFO] [stdout]   |
[INFO] [stdout] 8 | static INST_ONCE: Once = ONCE_INIT;
[INFO] [stdout]   |                          ^^^^^^^^^ help: replace the use of the deprecated constant: `Once::new()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/writer.rs:11:24
[INFO] [stdout]    |
[INFO] [stdout] 11 |     appenders: Vec<Box<Appender>>,
[INFO] [stdout]    |                        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 11 -     appenders: Vec<Box<Appender>>,
[INFO] [stdout] 11 +     appenders: Vec<Box<dyn Appender>>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/writer.rs:82:50
[INFO] [stdout]    |
[INFO] [stdout] 82 |     pub fn add_appender(&mut self, appender: Box<Appender>) {
[INFO] [stdout]    |                                                  ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 82 -     pub fn add_appender(&mut self, appender: Box<Appender>) {
[INFO] [stdout] 82 +     pub fn add_appender(&mut self, appender: Box<dyn Appender>) {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hp-log` due to 2 previous errors; 4 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "21d910ac0ce4c47f92d42ab63ce0519231ddf69f78494762b24b1a8f56d4a457", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21d910ac0ce4c47f92d42ab63ce0519231ddf69f78494762b24b1a8f56d4a457", kill_on_drop: false }`
[INFO] [stdout] 21d910ac0ce4c47f92d42ab63ce0519231ddf69f78494762b24b1a8f56d4a457