[INFO] fetching crate rustlab 0.1.0...
[INFO] testing rustlab-0.1.0 against master#ebf0cf75d368c035f4c7e7246d203bd469ee4a51 for pr-137940
[INFO] extracting crate rustlab 0.1.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate rustlab 0.1.0 on toolchain ebf0cf75d368c035f4c7e7246d203bd469ee4a51
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ebf0cf75d368c035f4c7e7246d203bd469ee4a51" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rustlab 0.1.0
[INFO] finished tweaking crates.io crate rustlab 0.1.0
[INFO] tweaked toml for crates.io crate rustlab 0.1.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate rustlab 0.1.0 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" "+ebf0cf75d368c035f4c7e7246d203bd469ee4a51" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "+ebf0cf75d368c035f4c7e7246d203bd469ee4a51" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] af1758a10240c577fa50d237fe9f5545a314985b6de7d0139fd0399eed9a71e9
[INFO] running `Command { std: "docker" "start" "-a" "af1758a10240c577fa50d237fe9f5545a314985b6de7d0139fd0399eed9a71e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "af1758a10240c577fa50d237fe9f5545a314985b6de7d0139fd0399eed9a71e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af1758a10240c577fa50d237fe9f5545a314985b6de7d0139fd0399eed9a71e9", kill_on_drop: false }`
[INFO] [stdout] af1758a10240c577fa50d237fe9f5545a314985b6de7d0139fd0399eed9a71e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "+ebf0cf75d368c035f4c7e7246d203bd469ee4a51" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b812f00428fe821c927f0373bc534e4f4eed69cf40854de8b0afc70e90c5c229
[INFO] running `Command { std: "docker" "start" "-a" "b812f00428fe821c927f0373bc534e4f4eed69cf40854de8b0afc70e90c5c229", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustlab v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/hashmap_base.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `largest_i32` is never used
[INFO] [stdout]  --> src/generic_base.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn largest_i32(list: &[i32]) -> i32 {
[INFO] [stdout]   |    ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `largest` is never used
[INFO] [stdout]   --> src/generic_base.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn largest<T: PartialOrd + Copy>(list: &[T]) -> T {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Option` is never used
[INFO] [stdout]   --> src/generic_base.rs:21:6
[INFO] [stdout]    |
[INFO] [stdout] 21 | enum Option<T> {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Result` is never used
[INFO] [stdout]   --> src/generic_base.rs:26:6
[INFO] [stdout]    |
[INFO] [stdout] 26 | enum Result<T, E> {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]   --> src/generic_base.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | struct Point<T> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_x` and `get_y` are never used
[INFO] [stdout]   --> src/generic_base.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | impl<T> Point<T> {
[INFO] [stdout]    | ---------------- methods in this implementation
[INFO] [stdout] 39 |     fn get_x(&self) -> &T {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 43 |     fn get_y(&self) -> &T {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point2` is never constructed
[INFO] [stdout]   --> src/generic_base.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | struct Point2<T, U> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `creat_point` is never used
[INFO] [stdout]   --> src/generic_base.rs:54:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | impl<T, U> Point2<T, U> {
[INFO] [stdout]    | ----------------------- method in this implementation
[INFO] [stdout] 54 |     fn creat_point<V, W>(self, other: Point2<V, W>) -> Point2<T, W> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Dog` is never constructed
[INFO] [stdout]  --> src/struct_base.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Dog {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_name` and `get_age` are never used
[INFO] [stdout]  --> src/trait_base.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub trait GetInformation {
[INFO] [stdout]   |           -------------- methods in this trait
[INFO] [stdout] 3 |     fn get_name(&self) -> &String;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 4 |     fn get_age(&self) -> &u32;
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `square` is never used
[INFO] [stdout]  --> src/fn_base.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn square<T: Mul<T, Output = T>>(x: T, y: T) -> T {
[INFO] [stdout]   |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `gcd` is never used
[INFO] [stdout]  --> src/fn_base.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn gcd(a: u32, b: u32) -> u32 {
[INFO] [stdout]   |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `User` is never constructed
[INFO] [stdout]   --> src/fn_base.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct User {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `show` is never used
[INFO] [stdout]   --> src/fn_base.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl User {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] 21 |     fn show(&self) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `HasArea` is never used
[INFO] [stdout]  --> src/generic_bound.rs:9:7
[INFO] [stdout]   |
[INFO] [stdout] 9 | trait HasArea {
[INFO] [stdout]   |       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]   --> src/generic_bound.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | struct Rectangle { length: f64, height: f64 }
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_debug` is never used
[INFO] [stdout]   --> src/generic_bound.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn print_debug<T: Debug>(t: &T) {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `area` is never used
[INFO] [stdout]   --> src/generic_bound.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn area<T: HasArea>(t: &T) -> f64 { t.area() }
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cardinal` is never constructed
[INFO] [stdout]   --> src/generic_bound.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 52 | struct Cardinal;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BlueJay` is never constructed
[INFO] [stdout]   --> src/generic_bound.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | struct BlueJay;
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Turkey` is never constructed
[INFO] [stdout]   --> src/generic_bound.rs:54:8
[INFO] [stdout]    |
[INFO] [stdout] 54 | struct Turkey;
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Red` is never used
[INFO] [stdout]   --> src/generic_bound.rs:56:7
[INFO] [stdout]    |
[INFO] [stdout] 56 | trait Red {}
[INFO] [stdout]    |       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Blue` is never used
[INFO] [stdout]   --> src/generic_bound.rs:57:7
[INFO] [stdout]    |
[INFO] [stdout] 57 | trait Blue {}
[INFO] [stdout]    |       ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `red` is never used
[INFO] [stdout]   --> src/generic_bound.rs:64:4
[INFO] [stdout]    |
[INFO] [stdout] 64 | fn red<T: Red>(_: &T)   -> &'static str { "red" }
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `blue` is never used
[INFO] [stdout]   --> src/generic_bound.rs:65:4
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn blue<T: Blue>(_: &T) -> &'static str { "blue" }
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/generic_bound.rs:67:4
[INFO] [stdout]    |
[INFO] [stdout] 67 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `compare_prints` is never used
[INFO] [stdout]   --> src/generic_bound.rs:83:4
[INFO] [stdout]    |
[INFO] [stdout] 83 | fn compare_prints<T: Debug + Display>(t: &T) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `compare_types` is never used
[INFO] [stdout]   --> src/generic_bound.rs:88:4
[INFO] [stdout]    |
[INFO] [stdout] 88 | fn compare_types<T: Debug, U: Debug>(t: &T, u: &U) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `PrintInOption` is never used
[INFO] [stdout]  --> src/generic_bound_where.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | trait PrintInOption {
[INFO] [stdout]   |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Val` is never constructed
[INFO] [stdout]  --> src/generic_impl.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Val {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `GenVal` is never constructed
[INFO] [stdout]  --> src/generic_impl.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct GenVal<T> {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `value` is never used
[INFO] [stdout]   --> src/generic_impl.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl Val {
[INFO] [stdout]    | -------- method in this implementation
[INFO] [stdout] 10 |     fn value(&self) -> &f64 { &self.val }
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `value` is never used
[INFO] [stdout]   --> src/generic_impl.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl <T> GenVal<T> {
[INFO] [stdout]    | ------------------ method in this implementation
[INFO] [stdout] 14 |     fn value(&self) -> &T { &self.gen_val }
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Inch` is never used
[INFO] [stdout]  --> src/override_add_operator.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | enum Inch {}
[INFO] [stdout]   |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Mm` is never used
[INFO] [stdout]   --> src/override_add_operator.rs:10:6
[INFO] [stdout]    |
[INFO] [stdout] 10 | enum Mm {}
[INFO] [stdout]    |      ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Empty` is never constructed
[INFO] [stdout]  --> src/trait_test.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Empty;
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Null` is never constructed
[INFO] [stdout]  --> src/trait_test.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Null;
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `DoubleDrop` is never used
[INFO] [stdout]  --> src/trait_test.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | trait DoubleDrop<T> {
[INFO] [stdout]   |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "b812f00428fe821c927f0373bc534e4f4eed69cf40854de8b0afc70e90c5c229", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b812f00428fe821c927f0373bc534e4f4eed69cf40854de8b0afc70e90c5c229", kill_on_drop: false }`
[INFO] [stdout] b812f00428fe821c927f0373bc534e4f4eed69cf40854de8b0afc70e90c5c229
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "+ebf0cf75d368c035f4c7e7246d203bd469ee4a51" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e6680f2dc3d7e404d274b69298a610bdd8524fd13b646a551c80cfc24eb0b89c
[INFO] running `Command { std: "docker" "start" "-a" "e6680f2dc3d7e404d274b69298a610bdd8524fd13b646a551c80cfc24eb0b89c", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustlab v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]  --> src/option_base.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     use super::*;
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustlab` (bin "rustlab" test); 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   No space left on device (os error 28)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to parse process output: `/opt/rustwide/rustup-home/toolchains/ebf0cf75d368c035f4c7e7246d203bd469ee4a51/bin/rustc --crate-name rustlab --edition=2018 src/main.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --test --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values())' -C metadata=79df2317daacfc69 -C extra-filename=-918e78b3945a0947 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints=forbid` (exit status: 101)
[INFO] running `Command { std: "docker" "inspect" "e6680f2dc3d7e404d274b69298a610bdd8524fd13b646a551c80cfc24eb0b89c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6680f2dc3d7e404d274b69298a610bdd8524fd13b646a551c80cfc24eb0b89c", kill_on_drop: false }`
[INFO] [stdout] e6680f2dc3d7e404d274b69298a610bdd8524fd13b646a551c80cfc24eb0b89c