[INFO] updating cached repository https://github.com/rustkas/rust-101-impl
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 613d00f4626de92ead3dc7534fc6f94a73e95cfb
[INFO] testing rustkas/rust-101-impl against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Frustkas%2Frust-101-impl" "work/builds/worker-7/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rustkas/rust-101-impl on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/rustkas/rust-101-impl
[INFO] finished tweaking git repo https://github.com/rustkas/rust-101-impl
[INFO] tweaked toml for git repo https://github.com/rustkas/rust-101-impl written to work/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/rustkas/rust-101-impl already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 1a27284b6a99e173d6e0e9f17776677c0dab089f17741198ad8ed7f1dcc1f831
[INFO] running `"docker" "start" "-a" "1a27284b6a99e173d6e0e9f17776677c0dab089f17741198ad8ed7f1dcc1f831"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rust-101 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `el`
[INFO] [stderr]   --> src/part0.rs:24:9
[INFO] [stderr]    |
[INFO] [stderr] 24 |     for el in vec {
[INFO] [stderr]    |         ^^ help: consider prefixing with an underscore: `_el`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]   --> src/part0.rs:35:20
[INFO] [stderr]    |
[INFO] [stderr] 35 |             Number(n) => {
[INFO] [stderr]    |                    ^ help: consider prefixing with an underscore: `_n`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]   --> src/part0.rs:70:28
[INFO] [stderr]    |
[INFO] [stderr] 70 | fn print_number_or_nothing(n: NumberOrNothing) {
[INFO] [stderr]    |                            ^ help: consider prefixing with an underscore: `_n`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/part0.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let mut min = Nothing;
[INFO] [stderr]    |         ----^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Number`
[INFO] [stderr]   --> src/part0.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     Number(i32),
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `min_i32`
[INFO] [stderr]   --> src/part0.rs:45:1
[INFO] [stderr]    |
[INFO] [stderr] 45 | fn min_i32(a: i32, b: i32) -> i32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.29s
[INFO] running `"docker" "inspect" "1a27284b6a99e173d6e0e9f17776677c0dab089f17741198ad8ed7f1dcc1f831"`
[INFO] running `"docker" "rm" "-f" "1a27284b6a99e173d6e0e9f17776677c0dab089f17741198ad8ed7f1dcc1f831"`
[INFO] [stdout] 1a27284b6a99e173d6e0e9f17776677c0dab089f17741198ad8ed7f1dcc1f831
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 35de1255c1b7030d835e37d76d65332e40df8f386d9c2e616285ed4dcb32ac02
[INFO] running `"docker" "start" "-a" "35de1255c1b7030d835e37d76d65332e40df8f386d9c2e616285ed4dcb32ac02"`
[INFO] [stderr]    Compiling rust-101 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `el`
[INFO] [stderr]   --> src/part0.rs:24:9
[INFO] [stderr]    |
[INFO] [stderr] 24 |     for el in vec {
[INFO] [stderr]    |         ^^ help: consider prefixing with an underscore: `_el`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]   --> src/part0.rs:35:20
[INFO] [stderr]    |
[INFO] [stderr] 35 |             Number(n) => {
[INFO] [stderr]    |                    ^ help: consider prefixing with an underscore: `_n`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]   --> src/part0.rs:70:28
[INFO] [stderr]    |
[INFO] [stderr] 70 | fn print_number_or_nothing(n: NumberOrNothing) {
[INFO] [stderr]    |                            ^ help: consider prefixing with an underscore: `_n`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/part0.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let mut min = Nothing;
[INFO] [stderr]    |         ----^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Number`
[INFO] [stderr]   --> src/part0.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     Number(i32),
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `min_i32`
[INFO] [stderr]   --> src/part0.rs:45:1
[INFO] [stderr]    |
[INFO] [stderr] 45 | fn min_i32(a: i32, b: i32) -> i32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.23s
[INFO] running `"docker" "inspect" "35de1255c1b7030d835e37d76d65332e40df8f386d9c2e616285ed4dcb32ac02"`
[INFO] running `"docker" "rm" "-f" "35de1255c1b7030d835e37d76d65332e40df8f386d9c2e616285ed4dcb32ac02"`
[INFO] [stdout] 35de1255c1b7030d835e37d76d65332e40df8f386d9c2e616285ed4dcb32ac02
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] 1184b9425867f9c8846af9488f79e54dcf80b74faa28348cb04e9bcbf4bbed3e
[INFO] running `"docker" "start" "-a" "1184b9425867f9c8846af9488f79e54dcf80b74faa28348cb04e9bcbf4bbed3e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/part0-a4ab489eaad688ed
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/part01-bef230fd48bb6ace
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/part02-7f1e9b158de1a369
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "1184b9425867f9c8846af9488f79e54dcf80b74faa28348cb04e9bcbf4bbed3e"`
[INFO] running `"docker" "rm" "-f" "1184b9425867f9c8846af9488f79e54dcf80b74faa28348cb04e9bcbf4bbed3e"`
[INFO] [stdout] 1184b9425867f9c8846af9488f79e54dcf80b74faa28348cb04e9bcbf4bbed3e