[INFO] fetching crate cracker 0.1.0...
[INFO] checking cracker-0.1.0 against try#72f88fc4e9458f89516a0b8b0868f3718aec5b47 for pr-74989
[INFO] extracting crate cracker 0.1.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate cracker 0.1.0 on toolchain 72f88fc4e9458f89516a0b8b0868f3718aec5b47
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cracker 0.1.0
[INFO] finished tweaking crates.io crate cracker 0.1.0
[INFO] tweaked toml for crates.io crate cracker 0.1.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pwhash v0.1.2
[INFO] [stderr]   Downloaded crypto-mac v0.3.0
[INFO] [stderr]   Downloaded blake2 v0.5.2
[INFO] [stderr]   Downloaded jobsteal v0.5.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "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] d38314d27c7a449602ffb0b1542f40aa1804c1ecfe5b7396a8ad39c0424d9b33
[INFO] running `Command { std: "docker" "start" "-a" "d38314d27c7a449602ffb0b1542f40aa1804c1ecfe5b7396a8ad39c0424d9b33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d38314d27c7a449602ffb0b1542f40aa1804c1ecfe5b7396a8ad39c0424d9b33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d38314d27c7a449602ffb0b1542f40aa1804c1ecfe5b7396a8ad39c0424d9b33", kill_on_drop: false }`
[INFO] [stdout] d38314d27c7a449602ffb0b1542f40aa1804c1ecfe5b7396a8ad39c0424d9b33
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2e2961736a2c8165469a6a0ee2f9160cda85b30866c91d683f7f5372796c4504
[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" "2e2961736a2c8165469a6a0ee2f9160cda85b30866c91d683f7f5372796c4504", kill_on_drop: false }`
[INFO] [stderr]     Checking constant_time_eq v0.1.5
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking byte-tools v0.1.3
[INFO] [stderr]     Checking crossbeam v0.2.12
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking generic-array v0.7.3
[INFO] [stderr]     Checking digest v0.5.2
[INFO] [stderr]     Checking crypto-mac v0.3.0
[INFO] [stderr]     Checking blake2 v0.5.2
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking jobsteal v0.5.1
[INFO] [stderr]     Checking rust-crypto v0.2.36
[INFO] [stderr]     Checking pwhash v0.1.2
[INFO] [stderr]     Checking cracker v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]  --> src/lib.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::thread;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Blake2b`, `Digest`
[INFO] [stdout]   --> src/lib.rs:15:14
[INFO] [stdout]    |
[INFO] [stdout] 15 | use blake2::{Blake2b, Digest};
[INFO] [stdout]    |              ^^^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]  --> src/lib.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::thread;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Blake2b`, `Digest`
[INFO] [stdout]   --> src/lib.rs:15:14
[INFO] [stdout]    |
[INFO] [stdout] 15 | use blake2::{Blake2b, Digest};
[INFO] [stdout]    |              ^^^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file`
[INFO] [stdout]   --> src/lib.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let mut file = OpenOptions::new()
[INFO] [stdout]    |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let mut file = OpenOptions::new()
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file`
[INFO] [stdout]   --> src/lib.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let mut file = OpenOptions::new()
[INFO] [stdout]    |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let mut file = OpenOptions::new()
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/lib.rs:100:45
[INFO] [stdout]     |
[INFO] [stdout] 100 | ...                   file.write((hash.to_string() + ":" + word + "\n").as_bytes());
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/lib.rs:100:45
[INFO] [stdout]     |
[INFO] [stdout] 100 | ...                   file.write((hash.to_string() + ":" + word + "\n").as_bytes());
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.59s
[INFO] running `Command { std: "docker" "inspect" "2e2961736a2c8165469a6a0ee2f9160cda85b30866c91d683f7f5372796c4504", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e2961736a2c8165469a6a0ee2f9160cda85b30866c91d683f7f5372796c4504", kill_on_drop: false }`
[INFO] [stdout] 2e2961736a2c8165469a6a0ee2f9160cda85b30866c91d683f7f5372796c4504
