[INFO] cloning repository https://github.com/asutorufg/learnrust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/asutorufg/learnrust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fasutorufg%2Flearnrust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fasutorufg%2Flearnrust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6f4b5c49a53a51f0a441b2b3a7ff37b0d8a08ce4
[INFO] testing asutorufg/learnrust against master#733b47ea4b1b86216f14ef56e49440c33933f230+rustflags=-Copt-level=3 for pr-138759
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fasutorufg%2Flearnrust" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/asutorufg/learnrust
[INFO] finished tweaking git repo https://github.com/asutorufg/learnrust
[INFO] tweaked toml for git repo https://github.com/asutorufg/learnrust written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/asutorufg/learnrust on toolchain 733b47ea4b1b86216f14ef56e49440c33933f230
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/asutorufg/learnrust 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" "+733b47ea4b1b86216f14ef56e49440c33933f230" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stdout] 249fa6bed284f3adab94077844125e64104627103a31158ffd3a7a3245404d3f
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[INFO] [stdout] 249fa6bed284f3adab94077844125e64104627103a31158ffd3a7a3245404d3f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 76143cdf7a3a7370419c4dff1b82eab0dd146e9b154b00ec4c535a8bfb91b919
[INFO] running `Command { std: "docker" "start" "-a" "76143cdf7a3a7370419c4dff1b82eab0dd146e9b154b00ec4c535a8bfb91b919", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.124
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]    Compiling pkg-config v0.3.25
[INFO] [stderr]    Compiling parking_lot_core v0.9.2
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]    Compiling once_cell v1.10.0
[INFO] [stderr]    Compiling futures-sink v0.3.21
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]    Compiling slab v0.4.6
[INFO] [stderr]    Compiling futures-io v0.3.21
[INFO] [stderr]    Compiling tracing-core v0.1.26
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling indexmap v1.8.1
[INFO] [stderr]    Compiling openssl v0.10.38
[INFO] [stderr]    Compiling http v0.2.6
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling native-tls v0.2.10
[INFO] [stderr]    Compiling httparse v1.7.0
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling num_cpus v1.13.1
[INFO] [stderr]    Compiling mio v0.8.2
[INFO] [stderr]    Compiling socket2 v0.4.4
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling openssl-sys v0.9.72
[INFO] [stderr]    Compiling parking_lot v0.12.0
[INFO] [stderr]    Compiling http-body v0.4.4
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]    Compiling tracing-attributes v0.1.20
[INFO] [stderr]    Compiling tokio v1.17.0
[INFO] [stderr]    Compiling tracing v0.1.34
[INFO] [stderr]    Compiling futures-executor v0.3.21
[INFO] [stderr]    Compiling futures v0.3.21
[INFO] [stderr]    Compiling tokio-util v0.7.1
[INFO] [stderr]    Compiling tokio-native-tls v0.3.0
[INFO] [stderr]    Compiling h2 v0.3.13
[INFO] [stderr]    Compiling hyper v0.14.18
[INFO] [stderr]    Compiling hello-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `style` is never read
[INFO] [stdout]  --> src/sub_mod/hosting/iterator_test.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Shoe {
[INFO] [stdout]   |        ---- field in this struct
[INFO] [stdout] 3 |     size: u32,
[INFO] [stdout] 4 |     style: String,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Shoe` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]   --> src/sub_mod/hosting/smartpointers_test.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     Con(u32, Box<List>),
[INFO] [stdout]    |     --- ^^^  ^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     fields in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `List` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 11 -     Con(u32, Box<List>),
[INFO] [stdout] 11 +     Con((), ()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]   --> src/sub_mod/hosting/smartpointers_test.rs:98:10
[INFO] [stdout]    |
[INFO] [stdout] 98 |     Cons(i32, Rc<List2>),
[INFO] [stdout]    |     ---- ^^^  ^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     fields in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 98 -     Cons(i32, Rc<List2>),
[INFO] [stdout] 98 +     Cons((), ()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `a`, `b`, and `c` are never read
[INFO] [stdout]   --> src/sub_mod/hosting/test.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 81 |     struct Dd {
[INFO] [stdout]    |            -- fields in this struct
[INFO] [stdout] 82 |         a: String,
[INFO] [stdout]    |         ^
[INFO] [stdout] 83 |         b: String,
[INFO] [stdout]    |         ^
[INFO] [stdout] 84 |         c: u64,
[INFO] [stdout]    |         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Dd` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `a` and `b` are never read
[INFO] [stdout]   --> src/sub_mod/hosting/trait_test.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | struct Point<T> {
[INFO] [stdout]    |        ----- fields in this struct
[INFO] [stdout] 21 |     a: T,
[INFO] [stdout]    |     ^
[INFO] [stdout] 22 |     b: T,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Point` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/sub_mod/hosting/vector_test.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 31 |         Int(i32),
[INFO] [stdout]    |         --- ^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 31 -         Int(i32),
[INFO] [stdout] 31 +         Int(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/sub_mod/hosting/vector_test.rs:32:15
[INFO] [stdout]    |
[INFO] [stdout] 32 |         Float(f64),
[INFO] [stdout]    |         ----- ^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 32 -         Float(f64),
[INFO] [stdout] 32 +         Float(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/sub_mod/hosting/vector_test.rs:33:14
[INFO] [stdout]    |
[INFO] [stdout] 33 |         Text(String),
[INFO] [stdout]    |         ---- ^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 33 -         Text(String),
[INFO] [stdout] 33 +         Text(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `connect2` is never used
[INFO] [stdout]    --> src/sub_mod/stream/connect.rs:112:14
[INFO] [stdout]     |
[INFO] [stdout] 112 | pub async fn connect2() -> Result<(), ConnectError> {
[INFO] [stdout]     |              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `connect3` is never used
[INFO] [stdout]    --> src/sub_mod/stream/connect.rs:168:14
[INFO] [stdout]     |
[INFO] [stdout] 168 | pub async fn connect3() -> Result<(), ConnectError> {
[INFO] [stdout]     |              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 33s
[INFO] running `Command { std: "docker" "inspect" "76143cdf7a3a7370419c4dff1b82eab0dd146e9b154b00ec4c535a8bfb91b919", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76143cdf7a3a7370419c4dff1b82eab0dd146e9b154b00ec4c535a8bfb91b919", kill_on_drop: false }`
[INFO] [stdout] 76143cdf7a3a7370419c4dff1b82eab0dd146e9b154b00ec4c535a8bfb91b919
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7cedcfd5fc2c0aaedfd894392f43f9ebb76bfe1a965ae424847b45e4b71c431c
[INFO] running `Command { std: "docker" "start" "-a" "7cedcfd5fc2c0aaedfd894392f43f9ebb76bfe1a965ae424847b45e4b71c431c", kill_on_drop: false }`
[INFO] [stderr]    Compiling hello-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `style` is never read
[INFO] [stdout]  --> src/sub_mod/hosting/iterator_test.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Shoe {
[INFO] [stdout]   |        ---- field in this struct
[INFO] [stdout] 3 |     size: u32,
[INFO] [stdout] 4 |     style: String,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Shoe` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]   --> src/sub_mod/hosting/smartpointers_test.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     Con(u32, Box<List>),
[INFO] [stdout]    |     --- ^^^  ^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     fields in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `List` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 11 -     Con(u32, Box<List>),
[INFO] [stdout] 11 +     Con((), ()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]   --> src/sub_mod/hosting/smartpointers_test.rs:98:10
[INFO] [stdout]    |
[INFO] [stdout] 98 |     Cons(i32, Rc<List2>),
[INFO] [stdout]    |     ---- ^^^  ^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     fields in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 98 -     Cons(i32, Rc<List2>),
[INFO] [stdout] 98 +     Cons((), ()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `a`, `b`, and `c` are never read
[INFO] [stdout]   --> src/sub_mod/hosting/test.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 81 |     struct Dd {
[INFO] [stdout]    |            -- fields in this struct
[INFO] [stdout] 82 |         a: String,
[INFO] [stdout]    |         ^
[INFO] [stdout] 83 |         b: String,
[INFO] [stdout]    |         ^
[INFO] [stdout] 84 |         c: u64,
[INFO] [stdout]    |         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Dd` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `a` and `b` are never read
[INFO] [stdout]   --> src/sub_mod/hosting/trait_test.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | struct Point<T> {
[INFO] [stdout]    |        ----- fields in this struct
[INFO] [stdout] 21 |     a: T,
[INFO] [stdout]    |     ^
[INFO] [stdout] 22 |     b: T,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Point` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/sub_mod/hosting/vector_test.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 31 |         Int(i32),
[INFO] [stdout]    |         --- ^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 31 -         Int(i32),
[INFO] [stdout] 31 +         Int(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/sub_mod/hosting/vector_test.rs:32:15
[INFO] [stdout]    |
[INFO] [stdout] 32 |         Float(f64),
[INFO] [stdout]    |         ----- ^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 32 -         Float(f64),
[INFO] [stdout] 32 +         Float(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/sub_mod/hosting/vector_test.rs:33:14
[INFO] [stdout]    |
[INFO] [stdout] 33 |         Text(String),
[INFO] [stdout]    |         ---- ^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 33 -         Text(String),
[INFO] [stdout] 33 +         Text(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `connect2` is never used
[INFO] [stdout]    --> src/sub_mod/stream/connect.rs:112:14
[INFO] [stdout]     |
[INFO] [stdout] 112 | pub async fn connect2() -> Result<(), ConnectError> {
[INFO] [stdout]     |              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `connect3` is never used
[INFO] [stdout]    --> src/sub_mod/stream/connect.rs:168:14
[INFO] [stdout]     |
[INFO] [stdout] 168 | pub async fn connect3() -> Result<(), ConnectError> {
[INFO] [stdout]     |              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `Command { std: "docker" "inspect" "7cedcfd5fc2c0aaedfd894392f43f9ebb76bfe1a965ae424847b45e4b71c431c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7cedcfd5fc2c0aaedfd894392f43f9ebb76bfe1a965ae424847b45e4b71c431c", kill_on_drop: false }`
[INFO] [stdout] 7cedcfd5fc2c0aaedfd894392f43f9ebb76bfe1a965ae424847b45e4b71c431c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b0e7df1cadf21718e1b9d212ed37d9c35691321102ec3282b0c24a12dc680e60
[INFO] running `Command { std: "docker" "start" "-a" "b0e7df1cadf21718e1b9d212ed37d9c35691321102ec3282b0c24a12dc680e60", kill_on_drop: false }`
[INFO] [stderr] warning: field `style` is never read
[INFO] [stderr]  --> src/sub_mod/hosting/iterator_test.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | struct Shoe {
[INFO] [stderr]   |        ---- field in this struct
[INFO] [stderr] 3 |     size: u32,
[INFO] [stderr] 4 |     style: String,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `Shoe` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: fields `0` and `1` are never read
[INFO] [stderr]   --> src/sub_mod/hosting/smartpointers_test.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     Con(u32, Box<List>),
[INFO] [stderr]    |     --- ^^^  ^^^^^^^^^
[INFO] [stderr]    |     |
[INFO] [stderr]    |     fields in this variant
[INFO] [stderr]    |
[INFO] [stderr]    = note: `List` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stderr]    |
[INFO] [stderr] 11 -     Con(u32, Box<List>),
[INFO] [stderr] 11 +     Con((), ()),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: fields `0` and `1` are never read
[INFO] [stderr]   --> src/sub_mod/hosting/smartpointers_test.rs:98:10
[INFO] [stderr]    |
[INFO] [stderr] 98 |     Cons(i32, Rc<List2>),
[INFO] [stderr]    |     ---- ^^^  ^^^^^^^^^
[INFO] [stderr]    |     |
[INFO] [stderr]    |     fields in this variant
[INFO] [stderr]    |
[INFO] [stderr] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stderr]    |
[INFO] [stderr] 98 -     Cons(i32, Rc<List2>),
[INFO] [stderr] 98 +     Cons((), ()),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: fields `a`, `b`, and `c` are never read
[INFO] [stderr]   --> src/sub_mod/hosting/test.rs:82:9
[INFO] [stderr]    |
[INFO] [stderr] 81 |     struct Dd {
[INFO] [stderr]    |            -- fields in this struct
[INFO] [stderr] 82 |         a: String,
[INFO] [stderr]    |         ^
[INFO] [stderr] 83 |         b: String,
[INFO] [stderr]    |         ^
[INFO] [stderr] 84 |         c: u64,
[INFO] [stderr]    |         ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Dd` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: fields `a` and `b` are never read
[INFO] [stderr]   --> src/sub_mod/hosting/trait_test.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 20 | struct Point<T> {
[INFO] [stderr]    |        ----- fields in this struct
[INFO] [stderr] 21 |     a: T,
[INFO] [stderr]    |     ^
[INFO] [stderr] 22 |     b: T,
[INFO] [stderr]    |     ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Point` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]   --> src/sub_mod/hosting/vector_test.rs:31:13
[INFO] [stderr]    |
[INFO] [stderr] 31 |         Int(i32),
[INFO] [stderr]    |         --- ^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         field in this variant
[INFO] [stderr]    |
[INFO] [stderr]    = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stderr]    |
[INFO] [stderr] 31 -         Int(i32),
[INFO] [stderr] 31 +         Int(()),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]   --> src/sub_mod/hosting/vector_test.rs:32:15
[INFO] [stderr]    |
[INFO] [stderr] 32 |         Float(f64),
[INFO] [stderr]    |         ----- ^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         field in this variant
[INFO] [stderr]    |
[INFO] [stderr]    = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stderr]    |
[INFO] [stderr] 32 -         Float(f64),
[INFO] [stderr] 32 +         Float(()),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]   --> src/sub_mod/hosting/vector_test.rs:33:14
[INFO] [stderr]    |
[INFO] [stderr] 33 |         Text(String),
[INFO] [stderr]    |         ---- ^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         field in this variant
[INFO] [stderr]    |
[INFO] [stderr]    = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stderr]    |
[INFO] [stderr] 33 -         Text(String),
[INFO] [stderr] 33 +         Text(()),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: function `connect2` is never used
[INFO] [stderr]    --> src/sub_mod/stream/connect.rs:112:14
[INFO] [stderr]     |
[INFO] [stderr] 112 | pub async fn connect2() -> Result<(), ConnectError> {
[INFO] [stderr]     |              ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `connect3` is never used
[INFO] [stderr]    --> src/sub_mod/stream/connect.rs:168:14
[INFO] [stderr]     |
[INFO] [stderr] 168 | pub async fn connect3() -> Result<(), ConnectError> {
[INFO] [stderr]     |              ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `hello-rust` (bin "hello-rust" test) generated 10 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/hello_rust-329a43d67fe48eb1)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test sub_mod::hosting::link_test::test::test_link ... ok
[INFO] [stdout] test sub_mod::hosting::test_test::it_works ... ok
[INFO] [stdout] test sub_mod::hosting::test_test::result_test ... FAILED
[INFO] [stderr] error: test failed, to rerun pass `--bin hello-rust`
[INFO] [stdout] test sub_mod::hosting::test_test::assert_test - should panic ... ok
[INFO] [stdout] test sub_mod::hosting::test_test::another - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- sub_mod::hosting::test_test::result_test stdout ----
[INFO] [stdout] Error: "two plus two does not equal four"
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     sub_mod::hosting::test_test::result_test
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 4 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b0e7df1cadf21718e1b9d212ed37d9c35691321102ec3282b0c24a12dc680e60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0e7df1cadf21718e1b9d212ed37d9c35691321102ec3282b0c24a12dc680e60", kill_on_drop: false }`
[INFO] [stdout] b0e7df1cadf21718e1b9d212ed37d9c35691321102ec3282b0c24a12dc680e60
