[INFO] updating cached repository sgbasaraner/minart
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/sgbasaraner/minart
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/sgbasaraner/minart" "work/ex/beta-1.38-1/sources/1.37.0/gh/sgbasaraner/minart"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/sgbasaraner/minart'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/sgbasaraner/minart" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sgbasaraner/minart"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sgbasaraner/minart'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 97eead494eb838c58d86c2739f05e300e1ce9762
[INFO] sha for GitHub repo sgbasaraner/minart: 97eead494eb838c58d86c2739f05e300e1ce9762
[INFO] validating manifest of sgbasaraner/minart on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of sgbasaraner/minart on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing sgbasaraner/minart
[INFO] finished frobbing sgbasaraner/minart
[INFO] frobbed toml for sgbasaraner/minart written to work/ex/beta-1.38-1/sources/1.37.0/gh/sgbasaraner/minart/Cargo.toml
[INFO] started frobbing sgbasaraner/minart
[INFO] finished frobbing sgbasaraner/minart
[INFO] frobbed toml for sgbasaraner/minart written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sgbasaraner/minart/Cargo.toml
[INFO] crate sgbasaraner/minart already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing sgbasaraner/minart against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sgbasaraner/minart:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 46ad3ad1de34622245ea1fbfc7a40244993e7b287ae8dce8b6652b97ad972f39
[INFO] running `"docker" "start" "-a" "46ad3ad1de34622245ea1fbfc7a40244993e7b287ae8dce8b6652b97ad972f39"`
[INFO] [stderr]    Compiling syn v0.14.4
[INFO] [stderr]    Compiling jpeg-decoder v0.1.15
[INFO] [stderr]    Compiling num-derive v0.2.2
[INFO] [stderr]    Compiling image v0.19.0
[INFO] [stderr]    Compiling minart v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:67:13
[INFO] [stderr]    |
[INFO] [stderr] 67 |         let mut output = match File::create(formatted_file_name) {
[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]     Finished dev [unoptimized + debuginfo] target(s) in 29.09s
[INFO] running `"docker" "inspect" "46ad3ad1de34622245ea1fbfc7a40244993e7b287ae8dce8b6652b97ad972f39"`
[INFO] running `"docker" "rm" "-f" "46ad3ad1de34622245ea1fbfc7a40244993e7b287ae8dce8b6652b97ad972f39"`
[INFO] [stdout] 46ad3ad1de34622245ea1fbfc7a40244993e7b287ae8dce8b6652b97ad972f39
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sgbasaraner/minart:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 8d9fa8e4b83c94d205cc634b53c245d8a0af3122ac1e62abb5ef83adde4635ab
[INFO] running `"docker" "start" "-a" "8d9fa8e4b83c94d205cc634b53c245d8a0af3122ac1e62abb5ef83adde4635ab"`
[INFO] [stderr]    Compiling minart v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:67:13
[INFO] [stderr]    |
[INFO] [stderr] 67 |         let mut output = match File::create(formatted_file_name) {
[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]     Finished dev [unoptimized + debuginfo] target(s) in 1.26s
[INFO] running `"docker" "inspect" "8d9fa8e4b83c94d205cc634b53c245d8a0af3122ac1e62abb5ef83adde4635ab"`
[INFO] running `"docker" "rm" "-f" "8d9fa8e4b83c94d205cc634b53c245d8a0af3122ac1e62abb5ef83adde4635ab"`
[INFO] [stdout] 8d9fa8e4b83c94d205cc634b53c245d8a0af3122ac1e62abb5ef83adde4635ab
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sgbasaraner/minart:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] a1bd2de21b49a019a82c4ded5f8637a5382402c01a73499a77255392e21800b5
[INFO] running `"docker" "start" "-a" "a1bd2de21b49a019a82c4ded5f8637a5382402c01a73499a77255392e21800b5"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/minart-07884514a53848e2
[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" "a1bd2de21b49a019a82c4ded5f8637a5382402c01a73499a77255392e21800b5"`
[INFO] running `"docker" "rm" "-f" "a1bd2de21b49a019a82c4ded5f8637a5382402c01a73499a77255392e21800b5"`
[INFO] [stdout] a1bd2de21b49a019a82c4ded5f8637a5382402c01a73499a77255392e21800b5