[INFO] cloning repository https://github.com/kigawas/examples-in-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kigawas/examples-in-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkigawas%2Fexamples-in-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkigawas%2Fexamples-in-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bc0ce30ca9ac369134ece5875ff23d60edc51da7
[INFO] testing kigawas/examples-in-rust against beta-2021-01-01 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkigawas%2Fexamples-in-rust" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kigawas/examples-in-rust on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kigawas/examples-in-rust
[INFO] finished tweaking git repo https://github.com/kigawas/examples-in-rust
[INFO] tweaked toml for git repo https://github.com/kigawas/examples-in-rust written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/kigawas/examples-in-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 920aab6835978f3dbce16f2f760134ef3cf77b2c18fde4f3b4e6afddca0c23c2
[INFO] running `Command { std: "docker" "start" "-a" "920aab6835978f3dbce16f2f760134ef3cf77b2c18fde4f3b4e6afddca0c23c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "920aab6835978f3dbce16f2f760134ef3cf77b2c18fde4f3b4e6afddca0c23c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "920aab6835978f3dbce16f2f760134ef3cf77b2c18fde4f3b4e6afddca0c23c2", kill_on_drop: false }`
[INFO] [stdout] 920aab6835978f3dbce16f2f760134ef3cf77b2c18fde4f3b4e6afddca0c23c2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 564a9ccb032c0f13960f7d662ec150b3bbeeedc9002d7d64f3f91379dfbc9e1a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "564a9ccb032c0f13960f7d662ec150b3bbeeedc9002d7d64f3f91379dfbc9e1a", kill_on_drop: false }`
[INFO] [stderr]    Compiling examples-in-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `std` is imported redundantly
[INFO] [stdout]   --> src/chap5/mod.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |     use std;
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]   --> src/chap6/mod.rs:2:9
[INFO] [stdout]    |
[INFO] [stdout] 2  |     use std::convert::From;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ToString` is imported redundantly
[INFO] [stdout]   --> src/chap6/mod.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     use std::string::ToString;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]   --> src/chap8/mod.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |         'inner: loop {
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_labels)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/chap8/mod.rs:185:11
[INFO] [stdout]     |
[INFO] [stdout] 185 |         13...19 => println!("A teen"),
[INFO] [stdout]     |           ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/chap8/mod.rs:362:14
[INFO] [stdout]     |
[INFO] [stdout] 362 |         n @ 1...12 => println!("I'm a child of age {:?}", n),
[INFO] [stdout]     |              ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/chap8/mod.rs:363:15
[INFO] [stdout]     |
[INFO] [stdout] 363 |         n @ 13...19 => println!("I'm a teen of age {:?}", n),
[INFO] [stdout]     |               ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.05s
[INFO] running `Command { std: "docker" "inspect" "564a9ccb032c0f13960f7d662ec150b3bbeeedc9002d7d64f3f91379dfbc9e1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "564a9ccb032c0f13960f7d662ec150b3bbeeedc9002d7d64f3f91379dfbc9e1a", kill_on_drop: false }`
[INFO] [stdout] 564a9ccb032c0f13960f7d662ec150b3bbeeedc9002d7d64f3f91379dfbc9e1a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e86f35deca6ded0c3137c3094210f639f1ab0bbcc90ba4c7fe60401cb1b0bd2e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e86f35deca6ded0c3137c3094210f639f1ab0bbcc90ba4c7fe60401cb1b0bd2e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling examples-in-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `std` is imported redundantly
[INFO] [stdout]   --> src/chap5/mod.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |     use std;
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]   --> src/chap6/mod.rs:2:9
[INFO] [stdout]    |
[INFO] [stdout] 2  |     use std::convert::From;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ToString` is imported redundantly
[INFO] [stdout]   --> src/chap6/mod.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     use std::string::ToString;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]   --> src/chap8/mod.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |         'inner: loop {
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_labels)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/chap8/mod.rs:185:11
[INFO] [stdout]     |
[INFO] [stdout] 185 |         13...19 => println!("A teen"),
[INFO] [stdout]     |           ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/chap8/mod.rs:362:14
[INFO] [stdout]     |
[INFO] [stdout] 362 |         n @ 1...12 => println!("I'm a child of age {:?}", n),
[INFO] [stdout]     |              ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/chap8/mod.rs:363:15
[INFO] [stdout]     |
[INFO] [stdout] 363 |         n @ 13...19 => println!("I'm a teen of age {:?}", n),
[INFO] [stdout]     |               ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.00s
[INFO] running `Command { std: "docker" "inspect" "e86f35deca6ded0c3137c3094210f639f1ab0bbcc90ba4c7fe60401cb1b0bd2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e86f35deca6ded0c3137c3094210f639f1ab0bbcc90ba4c7fe60401cb1b0bd2e", kill_on_drop: false }`
[INFO] [stdout] e86f35deca6ded0c3137c3094210f639f1ab0bbcc90ba4c7fe60401cb1b0bd2e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a7d3b20b4b4c197d0475e560eaa23ca3b41c6cb9217a5c4920d443ee764b4b74
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a7d3b20b4b4c197d0475e560eaa23ca3b41c6cb9217a5c4920d443ee764b4b74", kill_on_drop: false }`
[INFO] [stderr] warning: the item `std` is imported redundantly
[INFO] [stderr]   --> src/chap5/mod.rs:51:9
[INFO] [stderr]    |
[INFO] [stderr] 51 |     use std;
[INFO] [stderr]    |         ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `From` is imported redundantly
[INFO] [stderr]   --> src/chap6/mod.rs:2:9
[INFO] [stderr]    |
[INFO] [stderr] 2  |     use std::convert::From;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `ToString` is imported redundantly
[INFO] [stderr]   --> src/chap6/mod.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |     use std::string::ToString;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused label
[INFO] [stderr]   --> src/chap8/mod.rs:62:9
[INFO] [stderr]    |
[INFO] [stderr] 62 |         'inner: loop {
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_labels)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/chap8/mod.rs:185:11
[INFO] [stderr]     |
[INFO] [stderr] 185 |         13...19 => println!("A teen"),
[INFO] [stderr]     |           ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/chap8/mod.rs:362:14
[INFO] [stderr]     |
[INFO] [stderr] 362 |         n @ 1...12 => println!("I'm a child of age {:?}", n),
[INFO] [stderr]     |              ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/chap8/mod.rs:363:15
[INFO] [stderr]     |
[INFO] [stderr] 363 |         n @ 13...19 => println!("I'm a teen of age {:?}", n),
[INFO] [stderr]     |               ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/examples_in_rust-924f56a3a9f3e809
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a7d3b20b4b4c197d0475e560eaa23ca3b41c6cb9217a5c4920d443ee764b4b74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7d3b20b4b4c197d0475e560eaa23ca3b41c6cb9217a5c4920d443ee764b4b74", kill_on_drop: false }`
[INFO] [stdout] a7d3b20b4b4c197d0475e560eaa23ca3b41c6cb9217a5c4920d443ee764b4b74