[INFO] fetching crate amber 0.6.0...
[INFO] checking amber-0.6.0 against try#264a7c4a1c917c83d13895a31231f9d93c7b67e1 for pr-132289
[INFO] extracting crate amber 0.6.0 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate amber 0.6.0 on toolchain 264a7c4a1c917c83d13895a31231f9d93c7b67e1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+264a7c4a1c917c83d13895a31231f9d93c7b67e1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate amber 0.6.0
[INFO] finished tweaking crates.io crate amber 0.6.0
[INFO] tweaked toml for crates.io crate amber 0.6.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate crates.io crate amber 0.6.0 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" "+264a7c4a1c917c83d13895a31231f9d93c7b67e1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+264a7c4a1c917c83d13895a31231f9d93c7b67e1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5ba976ab89e036cc18a6b621bb8616b710fc83602baf28bd7f46965720ac29d8
[INFO] running `Command { std: "docker" "start" "-a" "5ba976ab89e036cc18a6b621bb8616b710fc83602baf28bd7f46965720ac29d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5ba976ab89e036cc18a6b621bb8616b710fc83602baf28bd7f46965720ac29d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ba976ab89e036cc18a6b621bb8616b710fc83602baf28bd7f46965720ac29d8", kill_on_drop: false }`
[INFO] [stdout] 5ba976ab89e036cc18a6b621bb8616b710fc83602baf28bd7f46965720ac29d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+264a7c4a1c917c83d13895a31231f9d93c7b67e1" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ad07e74859a17f3eff755e5e0a98e7823c41070445002e00f0f8ba4a1079040b
[INFO] running `Command { std: "docker" "start" "-a" "ad07e74859a17f3eff755e5e0a98e7823c41070445002e00f0f8ba4a1079040b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.150
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.70
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling crossbeam-utils v0.8.18
[INFO] [stderr]    Compiling serde v1.0.193
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking bitflags v2.4.1
[INFO] [stderr]     Checking hashbrown v0.14.3
[INFO] [stderr]    Compiling rustix v0.38.25
[INFO] [stderr]    Compiling unicode-segmentation v1.10.1
[INFO] [stderr]     Checking equivalent v1.0.1
[INFO] [stderr]     Checking memchr v2.6.4
[INFO] [stderr]     Checking unicode-width v0.1.11
[INFO] [stderr]     Checking winnow v0.5.19
[INFO] [stderr]     Checking option-ext v0.2.0
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking linux-raw-sys v0.4.11
[INFO] [stderr]     Checking powerfmt v0.2.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]     Checking time-core v0.1.2
[INFO] [stderr]     Checking fastrand v2.0.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking deranged v0.3.9
[INFO] [stderr]     Checking rlibc v1.0.0
[INFO] [stderr]     Checking glob v0.3.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking aho-corasick v1.1.2
[INFO] [stderr]     Checking crossbeam-epoch v0.9.17
[INFO] [stderr]     Checking crossbeam-channel v0.5.10
[INFO] [stderr]     Checking crossbeam-queue v0.3.10
[INFO] [stderr]     Checking indexmap v2.1.0
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]     Checking crossbeam-deque v0.8.4
[INFO] [stderr]     Checking time v0.3.31
[INFO] [stderr]    Compiling syn v2.0.39
[INFO] [stderr]     Checking crossbeam v0.8.3
[INFO] [stderr]     Checking getrandom v0.2.11
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking dirs-sys v0.4.1
[INFO] [stderr]     Checking termios v0.3.3
[INFO] [stderr]     Checking nix v0.27.1
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking filetime v0.2.23
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking directories v5.0.1
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking getch v0.3.1
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking term v0.7.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking tempfile v3.8.1
[INFO] [stderr]     Checking regex-automata v0.4.3
[INFO] [stderr]     Checking ctrlc v3.4.2
[INFO] [stderr]    Compiling serde_derive v1.0.193
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking regex v1.10.2
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Checking toml_datetime v0.6.5
[INFO] [stderr]     Checking serde_spanned v0.6.4
[INFO] [stderr]     Checking toml_edit v0.21.0
[INFO] [stderr]     Checking toml v0.8.8
[INFO] [stderr]     Checking amber v0.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::path::PathBuf`
[INFO] [stdout]  --> benches/path_finder.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::path::PathBuf;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `test::Bencher`
[INFO] [stdout]  --> benches/path_finder.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use test::Bencher;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `rand::StdRng`
[INFO] [stdout]  --> benches/matcher.rs:8:30
[INFO] [stdout]   |
[INFO] [stdout] 8 | use rand::{Rng, SeedableRng, StdRng};
[INFO] [stdout]   |                              ^^^^^^ no `StdRng` in the root
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider importing this struct instead:
[INFO] [stdout]           rand::rngs::StdRng
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[INFO] [stdout]   --> benches/matcher.rs:41:31
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn bench(b: &mut Bencher, m: &Matcher) {
[INFO] [stdout]    |                               ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use a new generic type parameter, constrained by `Matcher`
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn bench<T: Matcher>(b: &mut Bencher, m: &T) {
[INFO] [stdout]    |         ++++++++++++                      ~
[INFO] [stdout] help: you can also use an opaque type, but users won't be able to specify the type parameter when calling the `fn`, having to rely exclusively on type inference
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn bench(b: &mut Bencher, m: &impl Matcher) {
[INFO] [stdout]    |                               ++++
[INFO] [stdout] help: alternatively, use a trait object to accept any type that implements `Matcher`, accessing its methods at runtime using dynamic dispatch
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn bench(b: &mut Bencher, m: &dyn Matcher) {
[INFO] [stdout]    |                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0782.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `amber` (bench "matcher") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "ad07e74859a17f3eff755e5e0a98e7823c41070445002e00f0f8ba4a1079040b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad07e74859a17f3eff755e5e0a98e7823c41070445002e00f0f8ba4a1079040b", kill_on_drop: false }`
[INFO] [stdout] ad07e74859a17f3eff755e5e0a98e7823c41070445002e00f0f8ba4a1079040b
