[INFO] cloning repository https://github.com/psatomas/generics
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/psatomas/generics" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpsatomas%2Fgenerics", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpsatomas%2Fgenerics'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 995ea6e7afb63aa260d6a6be9234514c85c8c894
[INFO] checking psatomas/generics against try#a3a874232ae0a7586b5fbe7483c5a42e157bd62a for pr-151109
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpsatomas%2Fgenerics" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/psatomas/generics
[INFO] finished tweaking git repo https://github.com/psatomas/generics
[INFO] tweaked toml for git repo https://github.com/psatomas/generics written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/psatomas/generics on toolchain a3a874232ae0a7586b5fbe7483c5a42e157bd62a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a3a874232ae0a7586b5fbe7483c5a42e157bd62a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/psatomas/generics 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" "+a3a874232ae0a7586b5fbe7483c5a42e157bd62a" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking psatomas/generics against try#a3a874232ae0a7586b5fbe7483c5a42e157bd62a for pr-151109
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpsatomas%2Fgenerics" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/psatomas/generics
[INFO] finished tweaking git repo https://github.com/psatomas/generics
[INFO] tweaked toml for git repo https://github.com/psatomas/generics written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/psatomas/generics on toolchain a3a874232ae0a7586b5fbe7483c5a42e157bd62a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a3a874232ae0a7586b5fbe7483c5a42e157bd62a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/psatomas/generics 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" "+a3a874232ae0a7586b5fbe7483c5a42e157bd62a" "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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+a3a874232ae0a7586b5fbe7483c5a42e157bd62a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b9af4c5cbe47c1a570de7f169031026dd199bdb7873495bd964cf5207141edba
[INFO] running `Command { std: "docker" "start" "-a" "b9af4c5cbe47c1a570de7f169031026dd199bdb7873495bd964cf5207141edba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b9af4c5cbe47c1a570de7f169031026dd199bdb7873495bd964cf5207141edba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9af4c5cbe47c1a570de7f169031026dd199bdb7873495bd964cf5207141edba", kill_on_drop: false }`
[INFO] [stdout] b9af4c5cbe47c1a570de7f169031026dd199bdb7873495bd964cf5207141edba
[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=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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+a3a874232ae0a7586b5fbe7483c5a42e157bd62a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 21bf19bc87e1c95fa835e3e6981b8b16c70c34724918cede20b4a448bc4104c7
[INFO] running `Command { std: "docker" "start" "-a" "21bf19bc87e1c95fa835e3e6981b8b16c70c34724918cede20b4a448bc4104c7", kill_on_drop: false }`
[INFO] [stderr]     Checking generics v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `captain` is never read
[INFO] [stdout]  --> src/bin/generics_and_impl_blocks_i.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct TreasureChest<T> {
[INFO] [stdout]   |        ------------- field in this struct
[INFO] [stdout] 3 |     captain: String,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `TreasureChest` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `captain` and `treasure` are never read
[INFO] [stdout]  --> src/bin/generics_in_struct.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct TreasureChest<T> {
[INFO] [stdout]   |        ------------- fields in this struct
[INFO] [stdout] 3 |     captain: String,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 4 |     treasure: T,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `TreasureChest` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `VideoFile` is never constructed
[INFO] [stdout]  --> src/bin/coding_challenge.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | enum DigitalContent {
[INFO] [stdout]   |      -------------- variant in this enum
[INFO] [stdout] 4 |     AudioFile,
[INFO] [stdout] 5 |     VideoFile,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `DigitalContent` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `captain` and `treasure` are never read
[INFO] [stdout]  --> src/bin/generics_in_struct.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct TreasureChest<T> {
[INFO] [stdout]   |        ------------- fields in this struct
[INFO] [stdout] 3 |     captain: String,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 4 |     treasure: T,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `TreasureChest` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mushroom`
[INFO] [stdout]  --> src/bin/generics_in_enums.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mushroom = Cheesesteak::Topping("mushrooms");
[INFO] [stdout]   |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mushroom`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `onions`
[INFO] [stdout]  --> src/bin/generics_in_enums.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let onions = Cheesesteak::Topping("onions".to_string());
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_onions`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bacon`
[INFO] [stdout]   --> src/bin/generics_in_enums.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let bacon = Cheesesteak::Topping(&topping);
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_bacon`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `plain` is assigned to, but never used
[INFO] [stdout]   --> src/bin/generics_in_enums.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let mut plain: Cheesesteak<String> = Cheesesteak::Plain;
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_plain` instead
[INFO] [stdout] help: you might have meant to pattern match on the similarly named variant `Plain`
[INFO] [stdout]    |
[INFO] [stdout] 12 -     let mut plain: Cheesesteak<String> = Cheesesteak::Plain;
[INFO] [stdout] 12 +     let Cheesesteak::Plain: Cheesesteak<String> = Cheesesteak::Plain;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `plain` is never read
[INFO] [stdout]   --> src/bin/generics_in_enums.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     plain = Cheesesteak::Topping("sausage".to_string());
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `VideoFile` is never constructed
[INFO] [stdout]  --> src/bin/coding_challenge.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | enum DigitalContent {
[INFO] [stdout]   |      -------------- variant in this enum
[INFO] [stdout] 4 |     AudioFile,
[INFO] [stdout] 5 |     VideoFile,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `DigitalContent` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mushroom`
[INFO] [stdout]  --> src/bin/generics_in_enums.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mushroom = Cheesesteak::Topping("mushrooms");
[INFO] [stdout]   |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mushroom`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `onions`
[INFO] [stdout]  --> src/bin/generics_in_enums.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let onions = Cheesesteak::Topping("onions".to_string());
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_onions`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bacon`
[INFO] [stdout]   --> src/bin/generics_in_enums.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let bacon = Cheesesteak::Topping(&topping);
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_bacon`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `plain` is assigned to, but never used
[INFO] [stdout]   --> src/bin/generics_in_enums.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let mut plain: Cheesesteak<String> = Cheesesteak::Plain;
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_plain` instead
[INFO] [stdout] help: you might have meant to pattern match on the similarly named variant `Plain`
[INFO] [stdout]    |
[INFO] [stdout] 12 -     let mut plain: Cheesesteak<String> = Cheesesteak::Plain;
[INFO] [stdout] 12 +     let Cheesesteak::Plain: Cheesesteak<String> = Cheesesteak::Plain;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `plain` is never read
[INFO] [stdout]   --> src/bin/generics_in_enums.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     plain = Cheesesteak::Topping("sausage".to_string());
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `captain` is never read
[INFO] [stdout]  --> src/bin/generics_and_impl_blocks_i.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct TreasureChest<T> {
[INFO] [stdout]   |        ------------- field in this struct
[INFO] [stdout] 3 |     captain: String,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `TreasureChest` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "21bf19bc87e1c95fa835e3e6981b8b16c70c34724918cede20b4a448bc4104c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21bf19bc87e1c95fa835e3e6981b8b16c70c34724918cede20b4a448bc4104c7", kill_on_drop: false }`
[INFO] [stdout] 21bf19bc87e1c95fa835e3e6981b8b16c70c34724918cede20b4a448bc4104c7