[INFO] crate scrapyard-core 0.1.0 is already in cache
[INFO] extracting crate scrapyard-core 0.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/scrapyard-core/0.1.0
[INFO] extracting crate scrapyard-core 0.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/scrapyard-core/0.1.0
[INFO] validating manifest of scrapyard-core-0.1.0 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 scrapyard-core-0.1.0 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 scrapyard-core-0.1.0
[INFO] finished frobbing scrapyard-core-0.1.0
[INFO] frobbed toml for scrapyard-core-0.1.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/scrapyard-core/0.1.0/Cargo.toml
[INFO] started frobbing scrapyard-core-0.1.0
[INFO] finished frobbing scrapyard-core-0.1.0
[INFO] frobbed toml for scrapyard-core-0.1.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/scrapyard-core/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing scrapyard-core-0.1.0 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/scrapyard-core/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=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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 0f4361932c7c3600e299433893b9029ce083a848990a37bde98e9c9af74416cb
[INFO] running `"docker" "start" "-a" "0f4361932c7c3600e299433893b9029ce083a848990a37bde98e9c9af74416cb"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling serde v1.0.99
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling ucd-util v0.1.5
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling utf8-ranges v1.0.4
[INFO] [stderr]    Compiling scrapyard-core v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]    Compiling itoa v0.4.4
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr] warning: function is never used: `target_dir`
[INFO] [stderr]   --> build.rs:38:1
[INFO] [stderr]    |
[INFO] [stderr] 38 | fn target_dir() -> PathBuf {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]    Compiling regex-syntax v0.5.6
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling aho-corasick v0.6.10
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]    Compiling backtrace v0.3.35
[INFO] [stderr]    Compiling error-chain v0.11.0
[INFO] [stderr]    Compiling serde_derive_internals v0.17.0
[INFO] [stderr]    Compiling serde_derive v1.0.21
[INFO] [stderr]    Compiling serde_json v1.0.40
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/irqs.rs:23:61
[INFO] [stderr]    |
[INFO] [stderr] 23 |     pub fn new(path: &Path) -> Result<InterruptBuilder, Box<Error>> {
[INFO] [stderr]    |                                                             ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `errors::*`
[INFO] [stderr]   --> src/lib.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 | use errors::*;
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]  --> src/errors.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | / error_chain!{
[INFO] [stderr] 2 | |         foreign_links {
[INFO] [stderr] 3 | |             Io(::std::io::Error);
[INFO] [stderr] 4 | |             SerdeJSON(::serde_json::Error);
[INFO] [stderr] 5 | |             Parse(::std::num::ParseIntError);
[INFO] [stderr] 6 | |         }
[INFO] [stderr] 7 | |     }
[INFO] [stderr]   | |_____^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(deprecated)] on by default
[INFO] [stderr]   = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]  --> src/errors.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | / error_chain!{
[INFO] [stderr] 2 | |         foreign_links {
[INFO] [stderr] 3 | |             Io(::std::io::Error);
[INFO] [stderr] 4 | |             SerdeJSON(::serde_json::Error);
[INFO] [stderr] 5 | |             Parse(::std::num::ParseIntError);
[INFO] [stderr] 6 | |         }
[INFO] [stderr] 7 | |     }
[INFO] [stderr]   | |_____^
[INFO] [stderr]   |
[INFO] [stderr]   = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `file`
[INFO] [stderr]   --> src/module/peripheral.rs:23:13
[INFO] [stderr]    |
[INFO] [stderr] 23 |         let file = File::open(&self.config);
[INFO] [stderr]    |             ^^^^ help: consider prefixing with an underscore: `_file`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `InterruptBuilder`
[INFO] [stderr]   --> src/irqs.rs:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | struct InterruptBuilder {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/irqs.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     pub fn new(path: &Path) -> Result<InterruptBuilder, Box<Error>> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 43.93s
[INFO] running `"docker" "inspect" "0f4361932c7c3600e299433893b9029ce083a848990a37bde98e9c9af74416cb"`
[INFO] running `"docker" "rm" "-f" "0f4361932c7c3600e299433893b9029ce083a848990a37bde98e9c9af74416cb"`
[INFO] [stdout] 0f4361932c7c3600e299433893b9029ce083a848990a37bde98e9c9af74416cb
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/scrapyard-core/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=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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 75dd88bba66dcf92be202b6c57f57b1e80dccb0620c0806f842592f79b1aecad
[INFO] running `"docker" "start" "-a" "75dd88bba66dcf92be202b6c57f57b1e80dccb0620c0806f842592f79b1aecad"`
[INFO] [stderr]    Compiling scrapyard-core v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0463]: can't find crate for `mcu`
[INFO] [stderr]  --> tests/interface.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | extern crate mcu;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stderr] 
[INFO] [stderr] error[E0463]: can't find crate for `mcu`
[INFO] [stderr]  --> tests/integration.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | extern crate mcu;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error: Could not compile `scrapyard-core`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: Could not compile `scrapyard-core`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/irqs.rs:23:61
[INFO] [stderr]    |
[INFO] [stderr] 23 |     pub fn new(path: &Path) -> Result<InterruptBuilder, Box<Error>> {
[INFO] [stderr]    |                                                             ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::*`
[INFO] [stderr]   --> src/irqs.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |     use super::*;
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `errors::*`
[INFO] [stderr]   --> src/lib.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 | use errors::*;
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]  --> src/errors.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | / error_chain!{
[INFO] [stderr] 2 | |         foreign_links {
[INFO] [stderr] 3 | |             Io(::std::io::Error);
[INFO] [stderr] 4 | |             SerdeJSON(::serde_json::Error);
[INFO] [stderr] 5 | |             Parse(::std::num::ParseIntError);
[INFO] [stderr] 6 | |         }
[INFO] [stderr] 7 | |     }
[INFO] [stderr]   | |_____^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(deprecated)] on by default
[INFO] [stderr]   = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]  --> src/errors.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | / error_chain!{
[INFO] [stderr] 2 | |         foreign_links {
[INFO] [stderr] 3 | |             Io(::std::io::Error);
[INFO] [stderr] 4 | |             SerdeJSON(::serde_json::Error);
[INFO] [stderr] 5 | |             Parse(::std::num::ParseIntError);
[INFO] [stderr] 6 | |         }
[INFO] [stderr] 7 | |     }
[INFO] [stderr]   | |_____^
[INFO] [stderr]   |
[INFO] [stderr]   = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `mcu`
[INFO] [stderr]    --> src/mcu.rs:206:13
[INFO] [stderr]     |
[INFO] [stderr] 206 |         let mcu = MCU::new(sample);
[INFO] [stderr]     |             ^^^ help: consider prefixing with an underscore: `_mcu`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `package`
[INFO] [stderr]   --> src/package.rs:99:13
[INFO] [stderr]    |
[INFO] [stderr] 99 |         let package = Package::new(package_name);
[INFO] [stderr]    |             ^^^^^^^ help: consider prefixing with an underscore: `_package`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `file`
[INFO] [stderr]   --> src/module/peripheral.rs:23:13
[INFO] [stderr]    |
[INFO] [stderr] 23 |         let file = File::open(&self.config);
[INFO] [stderr]    |             ^^^^ help: consider prefixing with an underscore: `_file`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `project_settings`
[INFO] [stderr]    --> src/projectsettings.rs:132:13
[INFO] [stderr]     |
[INFO] [stderr] 132 |         let project_settings =
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_project_settings`
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `InterruptBuilder`
[INFO] [stderr]   --> src/irqs.rs:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | struct InterruptBuilder {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/irqs.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     pub fn new(path: &Path) -> Result<InterruptBuilder, Box<Error>> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "75dd88bba66dcf92be202b6c57f57b1e80dccb0620c0806f842592f79b1aecad"`
[INFO] running `"docker" "rm" "-f" "75dd88bba66dcf92be202b6c57f57b1e80dccb0620c0806f842592f79b1aecad"`
[INFO] [stdout] 75dd88bba66dcf92be202b6c57f57b1e80dccb0620c0806f842592f79b1aecad