[INFO] fetching crate pew 0.2.3...
[INFO] testing pew-0.2.3 against 1.54.0 for beta-1.55-1
[INFO] extracting crate pew 0.2.3 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate pew 0.2.3 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pew 0.2.3
[INFO] finished tweaking crates.io crate pew 0.2.3
[INFO] tweaked toml for crates.io crate pew 0.2.3 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 537f47d70b9bf8208dbc04d3a1aa9288fa643d2229f1586c73eee4e0f2868c43
[INFO] running `Command { std: "docker" "start" "-a" "537f47d70b9bf8208dbc04d3a1aa9288fa643d2229f1586c73eee4e0f2868c43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "537f47d70b9bf8208dbc04d3a1aa9288fa643d2229f1586c73eee4e0f2868c43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "537f47d70b9bf8208dbc04d3a1aa9288fa643d2229f1586c73eee4e0f2868c43", kill_on_drop: false }`
[INFO] [stdout] 537f47d70b9bf8208dbc04d3a1aa9288fa643d2229f1586c73eee4e0f2868c43
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 597d926e358812abf5e9dcc31706f17821ea6266996beecea13ca4ec261f7459
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "597d926e358812abf5e9dcc31706f17821ea6266996beecea13ca4ec261f7459", kill_on_drop: false }`
[INFO] [stderr]    Compiling pew v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] error: the legacy LLVM-style asm! syntax is no longer supported
[INFO] [stdout]   --> src/lib.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |         asm!("" : "+r" (&_v) : : : "volatile");
[INFO] [stdout]    |         ----^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: replace with: `llvm_asm!`
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider migrating to the new asm! syntax specified in RFC 2873
[INFO] [stdout]    = note: alternatively, switch to llvm_asm! to keep your code working as it is
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the legacy LLVM-style asm! syntax is no longer supported
[INFO] [stdout]    --> src/lib.rs:107:9
[INFO] [stdout]     |
[INFO] [stdout] 107 |         asm!("" : : : "memory" : "volatile");
[INFO] [stdout]     |         ----^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: replace with: `llvm_asm!`
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider migrating to the new asm! syntax specified in RFC 2873
[INFO] [stdout]     = note: alternatively, switch to llvm_asm! to keep your code working as it is
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | #![feature(asm)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/benchmark.rs:17:43
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn compose<T: 'static, U: 'static>(f: Box<Fn(u64) -> T>, g: fn(T) -> U) -> Box<Fn(u64) -> U> {
[INFO] [stdout]    |                                           ^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(u64) -> T`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/benchmark.rs:17:80
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn compose<T: 'static, U: 'static>(f: Box<Fn(u64) -> T>, g: fn(T) -> U) -> Box<Fn(u64) -> U> {
[INFO] [stdout]    |                                                                                ^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(u64) -> U`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/benchmark.rs:88:20
[INFO] [stdout]    |
[INFO] [stdout] 88 |     generator: Box<Fn(u64) -> T>,
[INFO] [stdout]    |                    ^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(u64) -> T`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]  --> src/benchmark.rs:3:23
[INFO] [stdout]   |
[INFO] [stdout] 3 | 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/benchmark.rs:5:23
[INFO] [stdout]   |
[INFO] [stdout] 5 | static HEADER: Once = ONCE_INIT;
[INFO] [stdout]   |                       ^^^^^^^^^ help: replace the use of the deprecated constant: `Once::new()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/config.rs:53:56
[INFO] [stdout]    |
[INFO] [stdout] 53 |                 eprintln!("Illegal regex {}: {}", s, e.description());
[INFO] [stdout]    |                                                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 6 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 `pew`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "597d926e358812abf5e9dcc31706f17821ea6266996beecea13ca4ec261f7459", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "597d926e358812abf5e9dcc31706f17821ea6266996beecea13ca4ec261f7459", kill_on_drop: false }`
[INFO] [stdout] 597d926e358812abf5e9dcc31706f17821ea6266996beecea13ca4ec261f7459
