[INFO] cloning repository https://github.com/viccg93/generics_traits_lifetimes
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/viccg93/generics_traits_lifetimes" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fviccg93%2Fgenerics_traits_lifetimes", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fviccg93%2Fgenerics_traits_lifetimes'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6c790ef280e7f34ecd4e4abb7f73d3cd24d72399
[INFO] building viccg93/generics_traits_lifetimes against try#8b8eff55bd72abbb57167bc42222a7f91d41cb0d for pr-142134-abi-ast-error
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fviccg93%2Fgenerics_traits_lifetimes" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/viccg93/generics_traits_lifetimes on toolchain 8b8eff55bd72abbb57167bc42222a7f91d41cb0d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/viccg93/generics_traits_lifetimes
[INFO] finished tweaking git repo https://github.com/viccg93/generics_traits_lifetimes
[INFO] tweaked toml for git repo https://github.com/viccg93/generics_traits_lifetimes written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/viccg93/generics_traits_lifetimes 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" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "fetch" "--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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3a3b29c40df7e3be4940a2495a4fbd531888cd63de67a23c7d1d7fe15c744f98
[INFO] running `Command { std: "docker" "start" "-a" "3a3b29c40df7e3be4940a2495a4fbd531888cd63de67a23c7d1d7fe15c744f98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3a3b29c40df7e3be4940a2495a4fbd531888cd63de67a23c7d1d7fe15c744f98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a3b29c40df7e3be4940a2495a4fbd531888cd63de67a23c7d1d7fe15c744f98", kill_on_drop: false }`
[INFO] [stdout] 3a3b29c40df7e3be4940a2495a4fbd531888cd63de67a23c7d1d7fe15c744f98
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=warn" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 456e691ab61c6624b53437539ca18ce74e568bf8f1a5fdd40b25b67ea21b74af
[INFO] running `Command { std: "docker" "start" "-a" "456e691ab61c6624b53437539ca18ce74e568bf8f1a5fdd40b25b67ea21b74af", kill_on_drop: false }`
[INFO] [stderr]    Compiling generics_traits_lifetimes v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]    --> src/generics.rs:120:9
[INFO] [stdout]     |
[INFO] [stdout] 120 |     let result = get_largest(&vec);
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p1`
[INFO] [stdout]    --> src/generics.rs:124:9
[INFO] [stdout]     |
[INFO] [stdout] 124 |     let p1 = Point {
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_p1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p2`
[INFO] [stdout]    --> src/generics.rs:129:9
[INFO] [stdout]     |
[INFO] [stdout] 129 |     let p2 = Point {
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_p2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `point_3d`
[INFO] [stdout]    --> src/generics.rs:144:9
[INFO] [stdout]     |
[INFO] [stdout] 144 |     let point_3d = Point3d {
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_point_3d`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_largest_integer` is never used
[INFO] [stdout]  --> src/generics.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn get_largest_integer (list: &[u32]) -> &u32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_largest_char` is never used
[INFO] [stdout]   --> src/generics.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn get_largest_char (list: &[char]) -> &char {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Option` is never used
[INFO] [stdout]   --> src/generics.rs:57:6
[INFO] [stdout]    |
[INFO] [stdout] 57 | enum Option<T> {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Result` is never used
[INFO] [stdout]   --> src/generics.rs:63:6
[INFO] [stdout]    |
[INFO] [stdout] 63 | enum Result<T,E> {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `z` is never read
[INFO] [stdout]   --> src/generics.rs:73:5
[INFO] [stdout]    |
[INFO] [stdout] 70 | struct Point3d<T> {
[INFO] [stdout]    |        ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 73 |     z:T,
[INFO] [stdout]    |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `x` is never used
[INFO] [stdout]   --> src/generics.rs:81:8
[INFO] [stdout]    |
[INFO] [stdout] 80 | impl <T> Point3d <T> {
[INFO] [stdout]    | -------------------- method in this implementation
[INFO] [stdout] 81 |     fn x(&self) -> &T {
[INFO] [stdout]    |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.18s
[INFO] running `Command { std: "docker" "inspect" "456e691ab61c6624b53437539ca18ce74e568bf8f1a5fdd40b25b67ea21b74af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "456e691ab61c6624b53437539ca18ce74e568bf8f1a5fdd40b25b67ea21b74af", kill_on_drop: false }`
[INFO] [stdout] 456e691ab61c6624b53437539ca18ce74e568bf8f1a5fdd40b25b67ea21b74af
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=warn" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ccc95045a27e6c75ac2dc3763f47971e3012ef077240b04a296a84243650d0e3
[INFO] running `Command { std: "docker" "start" "-a" "ccc95045a27e6c75ac2dc3763f47971e3012ef077240b04a296a84243650d0e3", kill_on_drop: false }`
[INFO] [stderr]    Compiling generics_traits_lifetimes v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]    --> src/generics.rs:120:9
[INFO] [stdout]     |
[INFO] [stdout] 120 |     let result = get_largest(&vec);
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p1`
[INFO] [stdout]    --> src/generics.rs:124:9
[INFO] [stdout]     |
[INFO] [stdout] 124 |     let p1 = Point {
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_p1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p2`
[INFO] [stdout]    --> src/generics.rs:129:9
[INFO] [stdout]     |
[INFO] [stdout] 129 |     let p2 = Point {
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_p2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `point_3d`
[INFO] [stdout]    --> src/generics.rs:144:9
[INFO] [stdout]     |
[INFO] [stdout] 144 |     let point_3d = Point3d {
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_point_3d`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_largest_integer` is never used
[INFO] [stdout]  --> src/generics.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn get_largest_integer (list: &[u32]) -> &u32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_largest_char` is never used
[INFO] [stdout]   --> src/generics.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn get_largest_char (list: &[char]) -> &char {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Option` is never used
[INFO] [stdout]   --> src/generics.rs:57:6
[INFO] [stdout]    |
[INFO] [stdout] 57 | enum Option<T> {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Result` is never used
[INFO] [stdout]   --> src/generics.rs:63:6
[INFO] [stdout]    |
[INFO] [stdout] 63 | enum Result<T,E> {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `z` is never read
[INFO] [stdout]   --> src/generics.rs:73:5
[INFO] [stdout]    |
[INFO] [stdout] 70 | struct Point3d<T> {
[INFO] [stdout]    |        ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 73 |     z:T,
[INFO] [stdout]    |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `x` is never used
[INFO] [stdout]   --> src/generics.rs:81:8
[INFO] [stdout]    |
[INFO] [stdout] 80 | impl <T> Point3d <T> {
[INFO] [stdout]    | -------------------- method in this implementation
[INFO] [stdout] 81 |     fn x(&self) -> &T {
[INFO] [stdout]    |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] running `Command { std: "docker" "inspect" "ccc95045a27e6c75ac2dc3763f47971e3012ef077240b04a296a84243650d0e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ccc95045a27e6c75ac2dc3763f47971e3012ef077240b04a296a84243650d0e3", kill_on_drop: false }`
[INFO] [stdout] ccc95045a27e6c75ac2dc3763f47971e3012ef077240b04a296a84243650d0e3