[INFO] crate narc 0.1.0 is already in cache
[INFO] extracting crate narc 0.1.0 into work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/narc/0.1.0
[INFO] extracting crate narc 0.1.0 into work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/narc/0.1.0
[INFO] validating manifest of narc-0.1.0 on toolchain master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of narc-0.1.0 on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing narc-0.1.0
[INFO] finished frobbing narc-0.1.0
[INFO] frobbed toml for narc-0.1.0 written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/narc/0.1.0/Cargo.toml
[INFO] started frobbing narc-0.1.0
[INFO] finished frobbing narc-0.1.0
[INFO] frobbed toml for narc-0.1.0 written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/narc/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing narc-0.1.0 against try#7fea0229842e79db1159ea58ad9a653b288efee9 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-5/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/narc/0.1.0:/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=forbid" "-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" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "build" "--frozen"`
[INFO] [stdout] 794c888ef9e4e122b848ba407e36e96c4047552d6c2a5f1dbefce3d3b9d83bd8
[INFO] running `"docker" "start" "-a" "794c888ef9e4e122b848ba407e36e96c4047552d6c2a5f1dbefce3d3b9d83bd8"`
[INFO] [stderr] warning: the cargo feature `edition` is now stable and is no longer necessary to be listed in the manifest
[INFO] [stderr]    Compiling nitro_fs v0.1.0
[INFO] [stderr]    Compiling narc v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `bail`
[INFO] [stderr]  --> src/extract.rs:2:15
[INFO] [stderr]   |
[INFO] [stderr] 2 | use failure::{bail, ensure, Error};
[INFO] [stderr]   |               ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `nitro_fs::FileSystem`
[INFO] [stderr]   --> src/extract.rs:45:13
[INFO] [stderr]    |
[INFO] [stderr] 45 |         use nitro_fs::FileSystem;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `fat`
[INFO] [stderr]   --> src/extract.rs:50:13
[INFO] [stderr]    |
[INFO] [stderr] 50 |         let fat = &self.data[fat_offset..fat_offset + file_count * 8];
[INFO] [stderr]    |             ^^^ help: consider prefixing with an underscore: `_fat`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `path`
[INFO] [stderr]   --> src/extract.rs:44:43
[INFO] [stderr]    |
[INFO] [stderr] 44 |     pub fn extract<P: AsRef<Path>>(&self, path: P) -> Result<(), Error> {
[INFO] [stderr]    |                                           ^^^^ help: consider prefixing with an underscore: `_path`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `read_u32`
[INFO] [stderr]   --> src/extract.rs:64:5
[INFO] [stderr]    |
[INFO] [stderr] 64 |     fn read_u32(&self, offset: usize) -> Result<u32, Error> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.25s
[INFO] running `"docker" "inspect" "794c888ef9e4e122b848ba407e36e96c4047552d6c2a5f1dbefce3d3b9d83bd8"`
[INFO] running `"docker" "rm" "-f" "794c888ef9e4e122b848ba407e36e96c4047552d6c2a5f1dbefce3d3b9d83bd8"`
[INFO] [stdout] 794c888ef9e4e122b848ba407e36e96c4047552d6c2a5f1dbefce3d3b9d83bd8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-5/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/narc/0.1.0:/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=forbid" "-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" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 90e73f65e80e2728bb58603eb39928af073010d40dcb76e37b4cd45e799d44fb
[INFO] running `"docker" "start" "-a" "90e73f65e80e2728bb58603eb39928af073010d40dcb76e37b4cd45e799d44fb"`
[INFO] [stderr] warning: the cargo feature `edition` is now stable and is no longer necessary to be listed in the manifest
[INFO] [stderr]    Compiling narc v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `bail`
[INFO] [stderr]  --> src/extract.rs:2:15
[INFO] [stderr]   |
[INFO] [stderr] 2 | use failure::{bail, ensure, Error};
[INFO] [stderr]   |               ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `nitro_fs::FileSystem`
[INFO] [stderr]   --> src/extract.rs:45:13
[INFO] [stderr]    |
[INFO] [stderr] 45 |         use nitro_fs::FileSystem;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `fat`
[INFO] [stderr]   --> src/extract.rs:50:13
[INFO] [stderr]    |
[INFO] [stderr] 50 |         let fat = &self.data[fat_offset..fat_offset + file_count * 8];
[INFO] [stderr]    |             ^^^ help: consider prefixing with an underscore: `_fat`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `path`
[INFO] [stderr]   --> src/extract.rs:44:43
[INFO] [stderr]    |
[INFO] [stderr] 44 |     pub fn extract<P: AsRef<Path>>(&self, path: P) -> Result<(), Error> {
[INFO] [stderr]    |                                           ^^^^ help: consider prefixing with an underscore: `_path`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `read_u32`
[INFO] [stderr]   --> src/extract.rs:64:5
[INFO] [stderr]    |
[INFO] [stderr] 64 |     fn read_u32(&self, offset: usize) -> Result<u32, Error> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `"docker" "inspect" "90e73f65e80e2728bb58603eb39928af073010d40dcb76e37b4cd45e799d44fb"`
[INFO] running `"docker" "rm" "-f" "90e73f65e80e2728bb58603eb39928af073010d40dcb76e37b4cd45e799d44fb"`
[INFO] [stdout] 90e73f65e80e2728bb58603eb39928af073010d40dcb76e37b4cd45e799d44fb
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-5/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/narc/0.1.0:/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=forbid" "-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" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "test" "--frozen"`
[INFO] [stdout] e4d79d513897103169a257196624bc3d4070db1571558c877f17711b8356074d
[INFO] running `"docker" "start" "-a" "e4d79d513897103169a257196624bc3d4070db1571558c877f17711b8356074d"`
[INFO] [stderr] warning: the cargo feature `edition` is now stable and is no longer necessary to be listed in the manifest
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/narc-d471d176241243eb
[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]    Doc-tests narc
[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" "e4d79d513897103169a257196624bc3d4070db1571558c877f17711b8356074d"`
[INFO] running `"docker" "rm" "-f" "e4d79d513897103169a257196624bc3d4070db1571558c877f17711b8356074d"`
[INFO] [stdout] e4d79d513897103169a257196624bc3d4070db1571558c877f17711b8356074d