[INFO] updating cached repository otaviopace/linked-lists
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/otaviopace/linked-lists
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/otaviopace/linked-lists" "work/ex/beta-1.37-6/sources/1.36.0/gh/otaviopace/linked-lists"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/otaviopace/linked-lists'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/otaviopace/linked-lists" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/otaviopace/linked-lists"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/otaviopace/linked-lists'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 97f9a022bd74c0592584a8f4a717d494f762c794
[INFO] sha for GitHub repo otaviopace/linked-lists: 97f9a022bd74c0592584a8f4a717d494f762c794
[INFO] validating manifest of otaviopace/linked-lists on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of otaviopace/linked-lists on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing otaviopace/linked-lists
[INFO] finished frobbing otaviopace/linked-lists
[INFO] frobbed toml for otaviopace/linked-lists written to work/ex/beta-1.37-6/sources/1.36.0/gh/otaviopace/linked-lists/Cargo.toml
[INFO] started frobbing otaviopace/linked-lists
[INFO] finished frobbing otaviopace/linked-lists
[INFO] frobbed toml for otaviopace/linked-lists written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/otaviopace/linked-lists/Cargo.toml
[INFO] crate otaviopace/linked-lists already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing otaviopace/linked-lists against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/otaviopace/linked-lists:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] a3349154216b4427fa60df0d139c1802c014799b8d43e3a369b462588a28edb5
[INFO] running `"docker" "start" "-a" "a3349154216b4427fa60df0d139c1802c014799b8d43e3a369b462588a28edb5"`
[INFO] [stderr]    Compiling linked-lists v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `iter`
[INFO] [stderr]   --> src/third.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |     fn iter<'a>(&'a self) -> Iter<'a, T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `"docker" "inspect" "a3349154216b4427fa60df0d139c1802c014799b8d43e3a369b462588a28edb5"`
[INFO] running `"docker" "rm" "-f" "a3349154216b4427fa60df0d139c1802c014799b8d43e3a369b462588a28edb5"`
[INFO] [stdout] a3349154216b4427fa60df0d139c1802c014799b8d43e3a369b462588a28edb5
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/otaviopace/linked-lists:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 67ae743f2a1b74d15ae761c51a654b3e7d1bf1a3c533aaaa19cf9b38f9c04820
[INFO] running `"docker" "start" "-a" "67ae743f2a1b74d15ae761c51a654b3e7d1bf1a3c533aaaa19cf9b38f9c04820"`
[INFO] [stderr]    Compiling linked-lists v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.90s
[INFO] running `"docker" "inspect" "67ae743f2a1b74d15ae761c51a654b3e7d1bf1a3c533aaaa19cf9b38f9c04820"`
[INFO] running `"docker" "rm" "-f" "67ae743f2a1b74d15ae761c51a654b3e7d1bf1a3c533aaaa19cf9b38f9c04820"`
[INFO] [stdout] 67ae743f2a1b74d15ae761c51a654b3e7d1bf1a3c533aaaa19cf9b38f9c04820
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/otaviopace/linked-lists:/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] acb32c6069b17ea5b5866bd51d5d96a313f0cc4fbb52a0457726de4403288147
[INFO] running `"docker" "start" "-a" "acb32c6069b17ea5b5866bd51d5d96a313f0cc4fbb52a0457726de4403288147"`
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] running 16 tests
[INFO] [stderr]      Running /opt/crater/target/debug/deps/linked_lists-5412697c50f673dd
[INFO] [stdout] test fifth::test::into_iter ... ok
[INFO] [stdout] test fifth::test::iter_mut ... ok
[INFO] [stdout] test fifth::test::iter ... ok
[INFO] [stdout] test fifth::test::basics ... ok
[INFO] [stdout] test second::test::basics ... ok
[INFO] [stdout] test second::test::into_iter ... ok
[INFO] [stdout] test second::test::iter ... ok
[INFO] [stdout] test second::test::iter_mut ... ok
[INFO] [stdout] test fourth::test::peek ... ok
[INFO] [stdout] test fourth::test::basics ... ok
[INFO] [stdout] test fourth::test::into_iter ... ok
[INFO] [stdout] test first::test::basics ... ok
[INFO] [stdout] test second::test::peek ... ok
[INFO] [stdout] test silly1::test::walk_aboot ... ok
[INFO] [stdout] test third::test::basics ... ok
[INFO] [stdout] test third::test::iter ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 16 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests linked-lists
[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" "acb32c6069b17ea5b5866bd51d5d96a313f0cc4fbb52a0457726de4403288147"`
[INFO] running `"docker" "rm" "-f" "acb32c6069b17ea5b5866bd51d5d96a313f0cc4fbb52a0457726de4403288147"`
[INFO] [stdout] acb32c6069b17ea5b5866bd51d5d96a313f0cc4fbb52a0457726de4403288147