[INFO] cloning repository https://github.com/jonathandturner/stream_tutorial
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jonathandturner/stream_tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonathandturner%2Fstream_tutorial", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonathandturner%2Fstream_tutorial'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5da4677b4466f5304ba39716f6dfa55d83c2602a
[INFO] testing jonathandturner/stream_tutorial against try#a7ce54db9b096bd1098d07c645b489195a667c9f for pr-137940
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonathandturner%2Fstream_tutorial" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jonathandturner/stream_tutorial on toolchain a7ce54db9b096bd1098d07c645b489195a667c9f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jonathandturner/stream_tutorial
[INFO] finished tweaking git repo https://github.com/jonathandturner/stream_tutorial
[INFO] tweaked toml for git repo https://github.com/jonathandturner/stream_tutorial written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/jonathandturner/stream_tutorial already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] befc137b2f11b71e76a048b4a5238a0d56cd2f39bc91a7cd12d5c7e44c022c3d
[INFO] running `Command { std: "docker" "start" "-a" "befc137b2f11b71e76a048b4a5238a0d56cd2f39bc91a7cd12d5c7e44c022c3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "befc137b2f11b71e76a048b4a5238a0d56cd2f39bc91a7cd12d5c7e44c022c3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "befc137b2f11b71e76a048b4a5238a0d56cd2f39bc91a7cd12d5c7e44c022c3d", kill_on_drop: false }`
[INFO] [stdout] befc137b2f11b71e76a048b4a5238a0d56cd2f39bc91a7cd12d5c7e44c022c3d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 52f05590e77dfcfb2c9da85896ef7ea4bb6611eedc818468368181b59dd9af6b
[INFO] running `Command { std: "docker" "start" "-a" "52f05590e77dfcfb2c9da85896ef7ea4bb6611eedc818468368181b59dd9af6b", kill_on_drop: false }`
[INFO] [stderr]    Compiling stream v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `ided::use_ided`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use ided::use_ided;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `student::Student`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use student::Student;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]   --> src/employee.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub struct Employee {
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] 39 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Employee` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `name` and `update` are never used
[INFO] [stdout]   --> src/employee.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | impl Employee {
[INFO] [stdout]    | ------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 48 |     fn name(&self) -> &str {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 52 |     fn update(&mut self) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `my_id` is never used
[INFO] [stdout]  --> src/ided.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait Ided {
[INFO] [stdout]   |           ---- method in this trait
[INFO] [stdout] 2 |     fn my_id(&self) -> i64;
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `use_ided` is never used
[INFO] [stdout]  --> src/ided.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn use_ided(x: Box<dyn Ided>) {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.17s
[INFO] running `Command { std: "docker" "inspect" "52f05590e77dfcfb2c9da85896ef7ea4bb6611eedc818468368181b59dd9af6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52f05590e77dfcfb2c9da85896ef7ea4bb6611eedc818468368181b59dd9af6b", kill_on_drop: false }`
[INFO] [stdout] 52f05590e77dfcfb2c9da85896ef7ea4bb6611eedc818468368181b59dd9af6b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 176cbbdeadf99fd475ee28a77a38f4afbd2ff39068c71d2a05066da43e370dfc
[INFO] running `Command { std: "docker" "start" "-a" "176cbbdeadf99fd475ee28a77a38f4afbd2ff39068c71d2a05066da43e370dfc", kill_on_drop: false }`
[INFO] [stderr]    Compiling stream v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `ided::use_ided`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use ided::use_ided;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `student::Student`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use student::Student;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]   --> src/employee.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub struct Employee {
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] 39 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Employee` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `name` and `update` are never used
[INFO] [stdout]   --> src/employee.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | impl Employee {
[INFO] [stdout]    | ------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 48 |     fn name(&self) -> &str {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 52 |     fn update(&mut self) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `my_id` is never used
[INFO] [stdout]  --> src/ided.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait Ided {
[INFO] [stdout]   |           ---- method in this trait
[INFO] [stdout] 2 |     fn my_id(&self) -> i64;
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `use_ided` is never used
[INFO] [stdout]  --> src/ided.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn use_ided(x: Box<dyn Ided>) {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] running `Command { std: "docker" "inspect" "176cbbdeadf99fd475ee28a77a38f4afbd2ff39068c71d2a05066da43e370dfc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "176cbbdeadf99fd475ee28a77a38f4afbd2ff39068c71d2a05066da43e370dfc", kill_on_drop: false }`
[INFO] [stdout] 176cbbdeadf99fd475ee28a77a38f4afbd2ff39068c71d2a05066da43e370dfc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] af352fb689a89b365995ad74f9323faf4938642964efe86e228dae5f03d22805
[INFO] running `Command { std: "docker" "start" "-a" "af352fb689a89b365995ad74f9323faf4938642964efe86e228dae5f03d22805", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `ided::use_ided`
[INFO] [stderr]  --> src/main.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use ided::use_ided;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `student::Student`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use student::Student;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `name` is never read
[INFO] [stderr]   --> src/employee.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 38 | pub struct Employee {
[INFO] [stderr]    |            -------- field in this struct
[INFO] [stderr] 39 |     name: String,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Employee` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: methods `name` and `update` are never used
[INFO] [stderr]   --> src/employee.rs:48:8
[INFO] [stderr]    |
[INFO] [stderr] 43 | impl Employee {
[INFO] [stderr]    | ------------- methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 48 |     fn name(&self) -> &str {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] ...
[INFO] [stderr] 52 |     fn update(&mut self) {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `my_id` is never used
[INFO] [stderr]  --> src/ided.rs:2:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub trait Ided {
[INFO] [stderr]   |           ---- method in this trait
[INFO] [stderr] 2 |     fn my_id(&self) -> i64;
[INFO] [stderr]   |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `use_ided` is never used
[INFO] [stderr]  --> src/ided.rs:5:8
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn use_ided(x: Box<dyn Ided>) {
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `stream` (bin "stream" test) generated 6 warnings (run `cargo fix --bin "stream" --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/stream-8ff8361f745472fd)
[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" "af352fb689a89b365995ad74f9323faf4938642964efe86e228dae5f03d22805", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af352fb689a89b365995ad74f9323faf4938642964efe86e228dae5f03d22805", kill_on_drop: false }`
[INFO] [stdout] af352fb689a89b365995ad74f9323faf4938642964efe86e228dae5f03d22805