[INFO] fetching crate zfec-rs 0.1.0...
[INFO] testing zfec-rs-0.1.0 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-8
[INFO] extracting crate zfec-rs 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate zfec-rs 0.1.0
[INFO] finished tweaking crates.io crate zfec-rs 0.1.0
[INFO] tweaked toml for crates.io crate zfec-rs 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate zfec-rs 0.1.0 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 14 packages to latest compatible versions
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "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-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e969ea560217315bff50bc7c78b00a3b2c82314c1c14c781ab99ab02b7be1fc5
[INFO] running `Command { std: "docker" "start" "-a" "e969ea560217315bff50bc7c78b00a3b2c82314c1c14c781ab99ab02b7be1fc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e969ea560217315bff50bc7c78b00a3b2c82314c1c14c781ab99ab02b7be1fc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e969ea560217315bff50bc7c78b00a3b2c82314c1c14c781ab99ab02b7be1fc5", kill_on_drop: false }`
[INFO] [stdout] e969ea560217315bff50bc7c78b00a3b2c82314c1c14c781ab99ab02b7be1fc5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2de50523898b3c3ff9fc084bf2c7bad9296ab4f164887f5eeedf72bcc87d219d
[INFO] running `Command { std: "docker" "start" "-a" "2de50523898b3c3ff9fc084bf2c7bad9296ab4f164887f5eeedf72bcc87d219d", kill_on_drop: false }`
[INFO] [stderr]    Compiling zfec-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "2de50523898b3c3ff9fc084bf2c7bad9296ab4f164887f5eeedf72bcc87d219d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2de50523898b3c3ff9fc084bf2c7bad9296ab4f164887f5eeedf72bcc87d219d", kill_on_drop: false }`
[INFO] [stdout] 2de50523898b3c3ff9fc084bf2c7bad9296ab4f164887f5eeedf72bcc87d219d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 143c2a0612b9d1233a42148467c7abe7ed65d281c69659b2801777d030ac5f78
[INFO] running `Command { std: "docker" "start" "-a" "143c2a0612b9d1233a42148467c7abe7ed65d281c69659b2801777d030ac5f78", kill_on_drop: false }`
[INFO] [stderr]    Compiling zfec-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `thread_rng`
[INFO] [stdout]   --> src/tests.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | use rand::{thread_rng, Rng};
[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 imports: `collections::BTreeMap`, `fs`, `io::prelude::*`, and `time`
[INFO] [stdout]   --> src/tests.rs:19:11
[INFO] [stdout]    |
[INFO] [stdout] 19 | use std::{collections::BTreeMap, fs, io::prelude::*, time};
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^  ^^  ^^^^^^^^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/tests.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |     let mut fec = Fec::new(k, m).unwrap();
[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 `test` profile [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `Command { std: "docker" "inspect" "143c2a0612b9d1233a42148467c7abe7ed65d281c69659b2801777d030ac5f78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "143c2a0612b9d1233a42148467c7abe7ed65d281c69659b2801777d030ac5f78", kill_on_drop: false }`
[INFO] [stdout] 143c2a0612b9d1233a42148467c7abe7ed65d281c69659b2801777d030ac5f78
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 66c86840bb80e3f3cdac633909897d54d28b4d273281751bc8e98b6f54fd6c6e
[INFO] running `Command { std: "docker" "start" "-a" "66c86840bb80e3f3cdac633909897d54d28b4d273281751bc8e98b6f54fd6c6e", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `thread_rng`
[INFO] [stderr]   --> src/tests.rs:18:12
[INFO] [stderr]    |
[INFO] [stderr] 18 | use rand::{thread_rng, Rng};
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `collections::BTreeMap`, `fs`, `io::prelude::*`, and `time`
[INFO] [stderr]   --> src/tests.rs:19:11
[INFO] [stderr]    |
[INFO] [stderr] 19 | use std::{collections::BTreeMap, fs, io::prelude::*, time};
[INFO] [stderr]    |           ^^^^^^^^^^^^^^^^^^^^^  ^^  ^^^^^^^^^^^^^^  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/tests.rs:54:9
[INFO] [stderr]    |
[INFO] [stderr] 54 |     let mut fec = Fec::new(k, m).unwrap();
[INFO] [stderr]    |         ----^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `zfec-rs` (lib test) generated 3 warnings (run `cargo fix --lib -p zfec-rs --tests` to apply 3 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/zfec_rs-b27175d25b571c9f)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::encoder_5_8_test ... ok
[INFO] [stdout] test tests::decoder_5_8_test ... ok
[INFO] [stderr]    Doc-tests zfec_rs
[INFO] [stdout] test tests::decoder_extensive ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.98s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - Chunk (line 87) ... ok
[INFO] [stdout] test src/lib.rs - Fec (line 137) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.39s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "66c86840bb80e3f3cdac633909897d54d28b4d273281751bc8e98b6f54fd6c6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66c86840bb80e3f3cdac633909897d54d28b4d273281751bc8e98b6f54fd6c6e", kill_on_drop: false }`
[INFO] [stdout] 66c86840bb80e3f3cdac633909897d54d28b4d273281751bc8e98b6f54fd6c6e