[INFO] cloning repository 11/LearnRust
[INFO] running `"git" "clone" "--bare" "git://github.com/11/LearnRust.git" "work/cache/sources/gh/11/LearnRust"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/11/LearnRust'...
[INFO] running `"git" "clone" "work/cache/sources/gh/11/LearnRust" "work/ex/beta-1.37-6/sources/1.36.0/gh/11/LearnRust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/11/LearnRust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/11/LearnRust" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/11/LearnRust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/11/LearnRust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0b3b5c72c9417c7fd1abebc6b654d5c8aef5d43b
[INFO] sha for GitHub repo 11/LearnRust: 0b3b5c72c9417c7fd1abebc6b654d5c8aef5d43b
[INFO] validating manifest of 11/LearnRust 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 11/LearnRust 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 11/LearnRust
[INFO] finished frobbing 11/LearnRust
[INFO] frobbed toml for 11/LearnRust written to work/ex/beta-1.37-6/sources/1.36.0/gh/11/LearnRust/Cargo.toml
[INFO] started frobbing 11/LearnRust
[INFO] finished frobbing 11/LearnRust
[INFO] frobbed toml for 11/LearnRust written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/11/LearnRust/Cargo.toml
[INFO] crate 11/LearnRust 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing 11/LearnRust 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-1/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/11/LearnRust:/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] 7460b0a3a3a24e2f631602ea8ebc988a8a11bd1096d2c31a315a35aad4370e47
[INFO] running `"docker" "start" "-a" "7460b0a3a3a24e2f631602ea8ebc988a8a11bd1096d2c31a315a35aad4370e47"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]    Compiling learn_rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/chapter3.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Book`
[INFO] [stderr]    --> src/chapter3.rs:120:5
[INFO] [stderr]     |
[INFO] [stderr] 120 |     struct Book {
[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/chapter3.rs:128:9
[INFO] [stderr]     |
[INFO] [stderr] 128 |         fn new(access_num: i32, author: &str, title: &str, is_issued: bool) -> Self {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.18s
[INFO] running `"docker" "inspect" "7460b0a3a3a24e2f631602ea8ebc988a8a11bd1096d2c31a315a35aad4370e47"`
[INFO] running `"docker" "rm" "-f" "7460b0a3a3a24e2f631602ea8ebc988a8a11bd1096d2c31a315a35aad4370e47"`
[INFO] [stdout] 7460b0a3a3a24e2f631602ea8ebc988a8a11bd1096d2c31a315a35aad4370e47
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/11/LearnRust:/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] bc38595010d52879c125a0e57ca0591c0be5ff56650a8b91d089596e683ccb9f
[INFO] running `"docker" "start" "-a" "bc38595010d52879c125a0e57ca0591c0be5ff56650a8b91d089596e683ccb9f"`
[INFO] [stderr]    Compiling learn_rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/chapter3.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Book`
[INFO] [stderr]    --> src/chapter3.rs:120:5
[INFO] [stderr]     |
[INFO] [stderr] 120 |     struct Book {
[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/chapter3.rs:128:9
[INFO] [stderr]     |
[INFO] [stderr] 128 |         fn new(access_num: i32, author: &str, title: &str, is_issued: bool) -> Self {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.90s
[INFO] running `"docker" "inspect" "bc38595010d52879c125a0e57ca0591c0be5ff56650a8b91d089596e683ccb9f"`
[INFO] running `"docker" "rm" "-f" "bc38595010d52879c125a0e57ca0591c0be5ff56650a8b91d089596e683ccb9f"`
[INFO] [stdout] bc38595010d52879c125a0e57ca0591c0be5ff56650a8b91d089596e683ccb9f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/11/LearnRust:/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] 8c95bf1b6bcdf3642d077e91412645556a4a770b09f2585d120dfedb3d8d87af
[INFO] running `"docker" "start" "-a" "8c95bf1b6bcdf3642d077e91412645556a4a770b09f2585d120dfedb3d8d87af"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/learn_rust-a377829a5eebf590
[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" "8c95bf1b6bcdf3642d077e91412645556a4a770b09f2585d120dfedb3d8d87af"`
[INFO] running `"docker" "rm" "-f" "8c95bf1b6bcdf3642d077e91412645556a4a770b09f2585d120dfedb3d8d87af"`
[INFO] [stdout] 8c95bf1b6bcdf3642d077e91412645556a4a770b09f2585d120dfedb3d8d87af