[INFO] cloning repository https://github.com/chokri/rust-basics
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/chokri/rust-basics" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchokri%2Frust-basics", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchokri%2Frust-basics'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6d3e8d46516a9c6b9045c0067939a50b8c43ece9
[INFO] testing chokri/rust-basics against 1.47.0 for beta-1.48-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchokri%2Frust-basics" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/chokri/rust-basics on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/chokri/rust-basics
[INFO] finished tweaking git repo https://github.com/chokri/rust-basics
[INFO] tweaked toml for git repo https://github.com/chokri/rust-basics written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/chokri/rust-basics already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1bcf98280e05cdeb6c0dba4116b4b81f363a6a7bd5bbdc3aa29036830e900647
[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" "1bcf98280e05cdeb6c0dba4116b4b81f363a6a7bd5bbdc3aa29036830e900647", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1bcf98280e05cdeb6c0dba4116b4b81f363a6a7bd5bbdc3aa29036830e900647", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bcf98280e05cdeb6c0dba4116b4b81f363a6a7bd5bbdc3aa29036830e900647", kill_on_drop: false }`
[INFO] [stdout] 1bcf98280e05cdeb6c0dba4116b4b81f363a6a7bd5bbdc3aa29036830e900647
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 08f8525688157773d2b002ae5504012f5d925b89ce6c2010f8f01d01cb5c9df8
[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" "08f8525688157773d2b002ae5504012f5d925b89ce6c2010f8f01d01cb5c9df8", 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] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling block-cipher-trait v0.6.2
[INFO] [stderr]    Compiling blowfish v0.4.0
[INFO] [stderr]    Compiling bcrypt v0.4.0
[INFO] [stderr]    Compiling rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]   --> src/vars.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let name = "chokri";
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `age`
[INFO] [stdout]   --> src/vars.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let age = 34; // We can't change this
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_age`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `year`
[INFO] [stdout]   --> src/vars.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let year = 2019; // This can be changed
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_year`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sport`
[INFO] [stdout]   --> src/vars.rs:21:10
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let (sport, activity) = ("Basketball", "Playing");
[INFO] [stdout]    |          ^^^^^ help: if this is intentional, prefix it with an underscore: `_sport`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `activity`
[INFO] [stdout]   --> src/vars.rs:21:17
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let (sport, activity) = ("Basketball", "Playing");
[INFO] [stdout]    |                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_activity`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/person.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let mut person = Person::new("Chuck", "Norris", "male", 38);
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `full_name`
[INFO] [stdout]   --> src/person.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn full_name (&self) -> String {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::str::<impl str>::replace` that must be used
[INFO] [stdout]   --> src/vars.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     title.replace("world", "there");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this returns the replaced string as a new allocation, without modifying the original
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.25s
[INFO] running `Command { std: "docker" "inspect" "08f8525688157773d2b002ae5504012f5d925b89ce6c2010f8f01d01cb5c9df8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08f8525688157773d2b002ae5504012f5d925b89ce6c2010f8f01d01cb5c9df8", kill_on_drop: false }`
[INFO] [stdout] 08f8525688157773d2b002ae5504012f5d925b89ce6c2010f8f01d01cb5c9df8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "test" "--frozen" "--no-run" "--message-format=json", 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] d963ab4e523af37375806c80004d2aa43e1cf81dd963eff847f073f0ee00a174
[INFO] running `Command { std: "docker" "start" "-a" "d963ab4e523af37375806c80004d2aa43e1cf81dd963eff847f073f0ee00a174", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]   --> src/vars.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let name = "chokri";
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `age`
[INFO] [stdout]   --> src/vars.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let age = 34; // We can't change this
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_age`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `year`
[INFO] [stdout]   --> src/vars.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let year = 2019; // This can be changed
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_year`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sport`
[INFO] [stdout]   --> src/vars.rs:21:10
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let (sport, activity) = ("Basketball", "Playing");
[INFO] [stdout]    |          ^^^^^ help: if this is intentional, prefix it with an underscore: `_sport`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `activity`
[INFO] [stdout]   --> src/vars.rs:21:17
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let (sport, activity) = ("Basketball", "Playing");
[INFO] [stdout]    |                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_activity`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/person.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let mut person = Person::new("Chuck", "Norris", "male", 38);
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `full_name`
[INFO] [stdout]   --> src/person.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn full_name (&self) -> String {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::str::<impl str>::replace` that must be used
[INFO] [stdout]   --> src/vars.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     title.replace("world", "there");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this returns the replaced string as a new allocation, without modifying the original
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.83s
[INFO] running `Command { std: "docker" "inspect" "d963ab4e523af37375806c80004d2aa43e1cf81dd963eff847f073f0ee00a174", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d963ab4e523af37375806c80004d2aa43e1cf81dd963eff847f073f0ee00a174", kill_on_drop: false }`
[INFO] [stdout] d963ab4e523af37375806c80004d2aa43e1cf81dd963eff847f073f0ee00a174
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e19c2c73e85664964ab78584df652ba8f959795ce0c5e83d63b72b7a9702519e
[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" "e19c2c73e85664964ab78584df652ba8f959795ce0c5e83d63b72b7a9702519e", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]   --> src/vars.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let name = "chokri";
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `age`
[INFO] [stderr]   --> src/vars.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |     let age = 34; // We can't change this
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_age`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `year`
[INFO] [stderr]   --> src/vars.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |     let year = 2019; // This can be changed
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_year`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sport`
[INFO] [stderr]   --> src/vars.rs:21:10
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let (sport, activity) = ("Basketball", "Playing");
[INFO] [stderr]    |          ^^^^^ help: if this is intentional, prefix it with an underscore: `_sport`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `activity`
[INFO] [stderr]   --> src/vars.rs:21:17
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let (sport, activity) = ("Basketball", "Playing");
[INFO] [stderr]    |                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_activity`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/person.rs:48:9
[INFO] [stderr]    |
[INFO] [stderr] 48 |     let mut person = Person::new("Chuck", "Norris", "male", 38);
[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] warning: associated function is never used: `full_name`
[INFO] [stderr]   --> src/person.rs:19:8
[INFO] [stderr]    |
[INFO] [stderr] 19 |     fn full_name (&self) -> String {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::str::<impl str>::replace` that must be used
[INFO] [stderr]   --> src/vars.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     title.replace("world", "there");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this returns the replaced string as a new allocation, without modifying the original
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust-561e4ec327ebbe2d
[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 `Command { std: "docker" "inspect" "e19c2c73e85664964ab78584df652ba8f959795ce0c5e83d63b72b7a9702519e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e19c2c73e85664964ab78584df652ba8f959795ce0c5e83d63b72b7a9702519e", kill_on_drop: false }`
[INFO] [stdout] e19c2c73e85664964ab78584df652ba8f959795ce0c5e83d63b72b7a9702519e
