[INFO] updating cached repository marcaddeo/docdoc
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/marcaddeo/docdoc
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/marcaddeo/docdoc" "work/ex/beta-1.38-1/sources/1.37.0/gh/marcaddeo/docdoc"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/marcaddeo/docdoc'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/marcaddeo/docdoc" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/marcaddeo/docdoc"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/marcaddeo/docdoc'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 60357bebdd993e3bfefc5e710dd20812c7fb2e93
[INFO] sha for GitHub repo marcaddeo/docdoc: 60357bebdd993e3bfefc5e710dd20812c7fb2e93
[INFO] validating manifest of marcaddeo/docdoc 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 marcaddeo/docdoc 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 marcaddeo/docdoc
[INFO] finished frobbing marcaddeo/docdoc
[INFO] frobbed toml for marcaddeo/docdoc written to work/ex/beta-1.38-1/sources/1.37.0/gh/marcaddeo/docdoc/Cargo.toml
[INFO] started frobbing marcaddeo/docdoc
[INFO] finished frobbing marcaddeo/docdoc
[INFO] frobbed toml for marcaddeo/docdoc written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/marcaddeo/docdoc/Cargo.toml
[INFO] crate marcaddeo/docdoc 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing marcaddeo/docdoc 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-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/marcaddeo/docdoc:/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] bc66f15166c1761971c2882a44425721a2dbfcd2aad8009cb0ec721c589b233c
[INFO] running `"docker" "start" "-a" "bc66f15166c1761971c2882a44425721a2dbfcd2aad8009cb0ec721c589b233c"`
[INFO] [stderr]    Compiling cc v1.0.2
[INFO] [stderr]    Compiling serde v1.0.16
[INFO] [stderr]    Compiling linked-hash-map v0.3.0
[INFO] [stderr]    Compiling typed-arena v1.3.0
[INFO] [stderr]    Compiling entities v1.0.0
[INFO] [stderr]    Compiling memchr v1.0.2
[INFO] [stderr]    Compiling atty v0.2.3
[INFO] [stderr]    Compiling memchr v2.0.0
[INFO] [stderr]    Compiling serde_derive v1.0.16
[INFO] [stderr]    Compiling clap v2.27.1
[INFO] [stderr]    Compiling yaml-rust v0.3.5
[INFO] [stderr]    Compiling yaml-rust v0.4.0
[INFO] [stderr]    Compiling twoway v0.1.4
[INFO] [stderr]    Compiling aho-corasick v0.6.3
[INFO] [stderr]    Compiling regex v0.2.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]    Compiling serde_json v1.0.4
[INFO] [stderr]    Compiling docopt v0.8.1
[INFO] [stderr]    Compiling serde_yaml v0.7.1
[INFO] [stderr]    Compiling backtrace v0.3.3
[INFO] [stderr]    Compiling error-chain v0.10.0
[INFO] [stderr]    Compiling error-chain v0.11.0
[INFO] [stderr]    Compiling tera v0.10.10
[INFO] [stderr]    Compiling comrak v0.2.3
[INFO] [stderr]    Compiling docdoc v0.1.0 (/opt/crater/workdir)
[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  | |         SerdeYamlError(::serde_yaml::Error);
[INFO] [stderr] 4  | |         YamlScanError(::yaml_rust::ScanError);
[INFO] [stderr] ...  |
[INFO] [stderr] 67 | |     }
[INFO] [stderr] 68 | | }
[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  | |         SerdeYamlError(::serde_yaml::Error);
[INFO] [stderr] 4  | |         YamlScanError(::yaml_rust::ScanError);
[INFO] [stderr] ...  |
[INFO] [stderr] 67 | |     }
[INFO] [stderr] 68 | | }
[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: the item `Write` is imported redundantly
[INFO] [stderr]   --> src/main.rs:67:9
[INFO] [stderr]    |
[INFO] [stderr] 9  | use std::io::prelude::*;
[INFO] [stderr]    |     ------------------- the item `Write` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 67 |     use std::io::Write;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:120:17
[INFO] [stderr]     |
[INFO] [stderr] 120 |             let mut extra_metadata: Mapping;
[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 1m 28s
[INFO] running `"docker" "inspect" "bc66f15166c1761971c2882a44425721a2dbfcd2aad8009cb0ec721c589b233c"`
[INFO] running `"docker" "rm" "-f" "bc66f15166c1761971c2882a44425721a2dbfcd2aad8009cb0ec721c589b233c"`
[INFO] [stdout] bc66f15166c1761971c2882a44425721a2dbfcd2aad8009cb0ec721c589b233c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/marcaddeo/docdoc:/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] 8adc941a8f0da3de423777b7f0d7a758a505540fcce6e289ed9d8af223dfbecd
[INFO] running `"docker" "start" "-a" "8adc941a8f0da3de423777b7f0d7a758a505540fcce6e289ed9d8af223dfbecd"`
[INFO] [stderr]    Compiling docdoc v0.1.0 (/opt/crater/workdir)
[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  | |         SerdeYamlError(::serde_yaml::Error);
[INFO] [stderr] 4  | |         YamlScanError(::yaml_rust::ScanError);
[INFO] [stderr] ...  |
[INFO] [stderr] 67 | |     }
[INFO] [stderr] 68 | | }
[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  | |         SerdeYamlError(::serde_yaml::Error);
[INFO] [stderr] 4  | |         YamlScanError(::yaml_rust::ScanError);
[INFO] [stderr] ...  |
[INFO] [stderr] 67 | |     }
[INFO] [stderr] 68 | | }
[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: the item `Write` is imported redundantly
[INFO] [stderr]   --> src/main.rs:67:9
[INFO] [stderr]    |
[INFO] [stderr] 9  | use std::io::prelude::*;
[INFO] [stderr]    |     ------------------- the item `Write` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 67 |     use std::io::Write;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:120:17
[INFO] [stderr]     |
[INFO] [stderr] 120 |             let mut extra_metadata: Mapping;
[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 2.88s
[INFO] running `"docker" "inspect" "8adc941a8f0da3de423777b7f0d7a758a505540fcce6e289ed9d8af223dfbecd"`
[INFO] running `"docker" "rm" "-f" "8adc941a8f0da3de423777b7f0d7a758a505540fcce6e289ed9d8af223dfbecd"`
[INFO] [stdout] 8adc941a8f0da3de423777b7f0d7a758a505540fcce6e289ed9d8af223dfbecd
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/marcaddeo/docdoc:/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"`
[INFO] [stdout] 619188cff44be04d11f120ac639134bb73f97bb4bf555eae9f8d9f777b00290f
[INFO] running `"docker" "start" "-a" "619188cff44be04d11f120ac639134bb73f97bb4bf555eae9f8d9f777b00290f"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/docdoc-9a541e6c32d61412
[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] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/docdoc-d523d82aa654c294
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests docdoc
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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" "619188cff44be04d11f120ac639134bb73f97bb4bf555eae9f8d9f777b00290f"`
[INFO] running `"docker" "rm" "-f" "619188cff44be04d11f120ac639134bb73f97bb4bf555eae9f8d9f777b00290f"`
[INFO] [stdout] 619188cff44be04d11f120ac639134bb73f97bb4bf555eae9f8d9f777b00290f