[INFO] fetching crate causal-length 0.2.0...
[INFO] checking causal-length-0.2.0 against try#804fff1ae95da9d03bd44eee27f258020a575dab for pr-146013
[INFO] extracting crate causal-length 0.2.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate causal-length 0.2.0
[INFO] finished tweaking crates.io crate causal-length 0.2.0
[INFO] tweaked toml for crates.io crate causal-length 0.2.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate causal-length 0.2.0 on toolchain 804fff1ae95da9d03bd44eee27f258020a575dab
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+804fff1ae95da9d03bd44eee27f258020a575dab" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+804fff1ae95da9d03bd44eee27f258020a575dab" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 37 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+804fff1ae95da9d03bd44eee27f258020a575dab" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+804fff1ae95da9d03bd44eee27f258020a575dab" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c6b92bf58551f4641af4ee81eb72e62741a2f1571a30bc1e57b162c472b2b0b5
[INFO] running `Command { std: "docker" "start" "-a" "c6b92bf58551f4641af4ee81eb72e62741a2f1571a30bc1e57b162c472b2b0b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c6b92bf58551f4641af4ee81eb72e62741a2f1571a30bc1e57b162c472b2b0b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6b92bf58551f4641af4ee81eb72e62741a2f1571a30bc1e57b162c472b2b0b5", kill_on_drop: false }`
[INFO] [stdout] c6b92bf58551f4641af4ee81eb72e62741a2f1571a30bc1e57b162c472b2b0b5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+804fff1ae95da9d03bd44eee27f258020a575dab" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 600adf38703e5ef2389dd7732a0c141f4c64812a0a3b83991227991fe003829c
[INFO] running `Command { std: "docker" "start" "-a" "600adf38703e5ef2389dd7732a0c141f4c64812a0a3b83991227991fe003829c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]     Checking regex-syntax v0.8.6
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]     Checking log v0.4.28
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]     Checking regex-automata v0.4.10
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking getrandom v0.2.16
[INFO] [stderr]     Checking getrandom v0.3.3
[INFO] [stderr]     Checking rand_core v0.9.3
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.9.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking rand v0.9.2
[INFO] [stderr]     Checking regex v1.11.2
[INFO] [stderr]     Checking env_logger v0.8.4
[INFO] [stderr]     Checking serde_json v1.0.143
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling quickcheck_macros v1.1.0
[INFO] [stderr]     Checking quickcheck v1.0.3
[INFO] [stderr]     Checking causal-length v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `serialization::*`
[INFO] [stdout]    --> src/map.rs:304:9
[INFO] [stdout]     |
[INFO] [stdout] 304 | pub use serialization::*;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serialization::*`
[INFO] [stdout]    --> src/set.rs:232:9
[INFO] [stdout]     |
[INFO] [stdout] 232 | pub use serialization::*;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serialization::*`
[INFO] [stdout]    --> src/map.rs:304:9
[INFO] [stdout]     |
[INFO] [stdout] 304 | pub use serialization::*;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serialization::*`
[INFO] [stdout]    --> src/set.rs:232:9
[INFO] [stdout]     |
[INFO] [stdout] 232 | pub use serialization::*;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `rand::thread_rng`: Renamed to `rng`
[INFO] [stdout]    --> src/map.rs:533:30
[INFO] [stdout]     |
[INFO] [stdout] 533 |         v.shuffle(&mut rand::thread_rng());
[INFO] [stdout]     |                              ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `rand::thread_rng`: Renamed to `rng`
[INFO] [stdout]    --> src/map.rs:555:30
[INFO] [stdout]     |
[INFO] [stdout] 555 |         v.shuffle(&mut rand::thread_rng());
[INFO] [stdout]     |                              ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `rand::thread_rng`: Renamed to `rng`
[INFO] [stdout]    --> src/map.rs:577:33
[INFO] [stdout]     |
[INFO] [stdout] 577 |         copy.shuffle(&mut rand::thread_rng());
[INFO] [stdout]     |                                 ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `rand::thread_rng`: Renamed to `rng`
[INFO] [stdout]    --> src/set.rs:429:30
[INFO] [stdout]     |
[INFO] [stdout] 429 |         v.shuffle(&mut rand::thread_rng());
[INFO] [stdout]     |                              ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `rand::thread_rng`: Renamed to `rng`
[INFO] [stdout]    --> src/set.rs:458:33
[INFO] [stdout]     |
[INFO] [stdout] 458 |         copy.shuffle(&mut rand::thread_rng());
[INFO] [stdout]     |                                 ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/set.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |         let mut e = self
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/set.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |         let mut e = self
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.37s
[INFO] running `Command { std: "docker" "inspect" "600adf38703e5ef2389dd7732a0c141f4c64812a0a3b83991227991fe003829c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "600adf38703e5ef2389dd7732a0c141f4c64812a0a3b83991227991fe003829c", kill_on_drop: false }`
[INFO] [stdout] 600adf38703e5ef2389dd7732a0c141f4c64812a0a3b83991227991fe003829c