[INFO] fetching crate err_prop 0.0.2...
[INFO] checking err_prop-0.0.2 against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] extracting crate err_prop 0.0.2 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate err_prop 0.0.2 on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate err_prop 0.0.2
[INFO] finished tweaking crates.io crate err_prop 0.0.2
[INFO] tweaked toml for crates.io crate err_prop 0.0.2 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 24058eec03c05c8eeabb45557687f77ddb5d46c76ff03ca23a3993af7839cb77
[INFO] running `Command { std: "docker" "start" "-a" "24058eec03c05c8eeabb45557687f77ddb5d46c76ff03ca23a3993af7839cb77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "24058eec03c05c8eeabb45557687f77ddb5d46c76ff03ca23a3993af7839cb77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24058eec03c05c8eeabb45557687f77ddb5d46c76ff03ca23a3993af7839cb77", kill_on_drop: false }`
[INFO] [stdout] 24058eec03c05c8eeabb45557687f77ddb5d46c76ff03ca23a3993af7839cb77
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 37ee74efb1f1011a40fbac4af7c9cb18a52dc6f42e1355c43f6bdb8cfac6883e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "37ee74efb1f1011a40fbac4af7c9cb18a52dc6f42e1355c43f6bdb8cfac6883e", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking approx v0.1.1
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking cgmath v0.12.0
[INFO] [stderr]     Checking err_prop v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `rhs`
[INFO] [stdout]    --> src/lib.rs:133:18
[INFO] [stdout]     |
[INFO] [stdout] 133 |     fn rem(self, rhs: Self) -> Self::Output {
[INFO] [stdout]     |                  ^^^ help: if this is intentional, prefix it with an underscore: `_rhs`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/lib.rs:265:16
[INFO] [stdout]     |
[INFO] [stdout] 265 |     fn from<T>(t: T) -> Option<Self> {
[INFO] [stdout]     |                ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `src`
[INFO] [stdout]    --> src/lib.rs:273:23
[INFO] [stdout]     |
[INFO] [stdout] 273 |     fn from_str_radix(src: &str, radix: u32) -> Result<Self, ParseFloatError> {
[INFO] [stdout]     |                       ^^^ help: if this is intentional, prefix it with an underscore: `_src`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `radix`
[INFO] [stdout]    --> src/lib.rs:273:34
[INFO] [stdout]     |
[INFO] [stdout] 273 |     fn from_str_radix(src: &str, radix: u32) -> Result<Self, ParseFloatError> {
[INFO] [stdout]     |                                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_radix`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]    --> src/lib.rs:298:27
[INFO] [stdout]     |
[INFO] [stdout] 298 |     fn relative_eq(&self, other: &Self, epsilon: Self::Epsilon, max_relative: Self::Epsilon) -> bool {
[INFO] [stdout]     |                           ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `epsilon`
[INFO] [stdout]    --> src/lib.rs:298:41
[INFO] [stdout]     |
[INFO] [stdout] 298 |     fn relative_eq(&self, other: &Self, epsilon: Self::Epsilon, max_relative: Self::Epsilon) -> bool {
[INFO] [stdout]     |                                         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_epsilon`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `max_relative`
[INFO] [stdout]    --> src/lib.rs:298:65
[INFO] [stdout]     |
[INFO] [stdout] 298 |     fn relative_eq(&self, other: &Self, epsilon: Self::Epsilon, max_relative: Self::Epsilon) -> bool {
[INFO] [stdout]     |                                                                 ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_max_relative`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]    --> src/lib.rs:303:23
[INFO] [stdout]     |
[INFO] [stdout] 303 |     fn ulps_eq(&self, other: &Self, epsilon: Self::Epsilon, max_ulps: u32) -> bool {
[INFO] [stdout]     |                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `epsilon`
[INFO] [stdout]    --> src/lib.rs:303:37
[INFO] [stdout]     |
[INFO] [stdout] 303 |     fn ulps_eq(&self, other: &Self, epsilon: Self::Epsilon, max_ulps: u32) -> bool {
[INFO] [stdout]     |                                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_epsilon`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `max_ulps`
[INFO] [stdout]    --> src/lib.rs:303:61
[INFO] [stdout]     |
[INFO] [stdout] 303 |     fn ulps_eq(&self, other: &Self, epsilon: Self::Epsilon, max_ulps: u32) -> bool {
[INFO] [stdout]     |                                                             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_max_ulps`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/lib.rs:423:22
[INFO] [stdout]     |
[INFO] [stdout] 423 |     fn mul_add(self, a: Self, b: Self) -> Self {
[INFO] [stdout]     |                      ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/lib.rs:423:31
[INFO] [stdout]     |
[INFO] [stdout] 423 |     fn mul_add(self, a: Self, b: Self) -> Self {
[INFO] [stdout]     |                               ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> src/lib.rs:433:19
[INFO] [stdout]     |
[INFO] [stdout] 433 |     fn powi(self, n: i32) -> Self {
[INFO] [stdout]     |                   ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> src/lib.rs:438:19
[INFO] [stdout]     |
[INFO] [stdout] 438 |     fn powf(self, n: Self) -> Self {
[INFO] [stdout]     |                   ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `base`
[INFO] [stdout]    --> src/lib.rs:463:18
[INFO] [stdout]     |
[INFO] [stdout] 463 |     fn log(self, base: Self) -> Self {
[INFO] [stdout]     |                  ^^^^ help: if this is intentional, prefix it with an underscore: `_base`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]    --> src/lib.rs:478:18
[INFO] [stdout]     |
[INFO] [stdout] 478 |     fn max(self, other: Self) -> Self {
[INFO] [stdout]     |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]    --> src/lib.rs:483:18
[INFO] [stdout]     |
[INFO] [stdout] 483 |     fn min(self, other: Self) -> Self {
[INFO] [stdout]     |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]    --> src/lib.rs:488:22
[INFO] [stdout]     |
[INFO] [stdout] 488 |     fn abs_sub(self, other: Self) -> Self {
[INFO] [stdout]     |                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]    --> src/lib.rs:498:20
[INFO] [stdout]     |
[INFO] [stdout] 498 |     fn hypot(self, other: Self) -> Self {
[INFO] [stdout]     |                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]    --> src/lib.rs:533:20
[INFO] [stdout]     |
[INFO] [stdout] 533 |     fn atan2(self, other: Self) -> Self {
[INFO] [stdout]     |                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rhs`
[INFO] [stdout]    --> src/lib.rs:133:18
[INFO] [stdout]     |
[INFO] [stdout] 133 |     fn rem(self, rhs: Self) -> Self::Output {
[INFO] [stdout]     |                  ^^^ help: if this is intentional, prefix it with an underscore: `_rhs`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/lib.rs:265:16
[INFO] [stdout]     |
[INFO] [stdout] 265 |     fn from<T>(t: T) -> Option<Self> {
[INFO] [stdout]     |                ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `src`
[INFO] [stdout]    --> src/lib.rs:273:23
[INFO] [stdout]     |
[INFO] [stdout] 273 |     fn from_str_radix(src: &str, radix: u32) -> Result<Self, ParseFloatError> {
[INFO] [stdout]     |                       ^^^ help: if this is intentional, prefix it with an underscore: `_src`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `radix`
[INFO] [stdout]    --> src/lib.rs:273:34
[INFO] [stdout]     |
[INFO] [stdout] 273 |     fn from_str_radix(src: &str, radix: u32) -> Result<Self, ParseFloatError> {
[INFO] [stdout]     |                                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_radix`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]    --> src/lib.rs:298:27
[INFO] [stdout]     |
[INFO] [stdout] 298 |     fn relative_eq(&self, other: &Self, epsilon: Self::Epsilon, max_relative: Self::Epsilon) -> bool {
[INFO] [stdout]     |                           ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `epsilon`
[INFO] [stdout]    --> src/lib.rs:298:41
[INFO] [stdout]     |
[INFO] [stdout] 298 |     fn relative_eq(&self, other: &Self, epsilon: Self::Epsilon, max_relative: Self::Epsilon) -> bool {
[INFO] [stdout]     |                                         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_epsilon`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `max_relative`
[INFO] [stdout]    --> src/lib.rs:298:65
[INFO] [stdout]     |
[INFO] [stdout] 298 |     fn relative_eq(&self, other: &Self, epsilon: Self::Epsilon, max_relative: Self::Epsilon) -> bool {
[INFO] [stdout]     |                                                                 ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_max_relative`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]    --> src/lib.rs:303:23
[INFO] [stdout]     |
[INFO] [stdout] 303 |     fn ulps_eq(&self, other: &Self, epsilon: Self::Epsilon, max_ulps: u32) -> bool {
[INFO] [stdout]     |                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `epsilon`
[INFO] [stdout]    --> src/lib.rs:303:37
[INFO] [stdout]     |
[INFO] [stdout] 303 |     fn ulps_eq(&self, other: &Self, epsilon: Self::Epsilon, max_ulps: u32) -> bool {
[INFO] [stdout]     |                                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_epsilon`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `max_ulps`
[INFO] [stdout]    --> src/lib.rs:303:61
[INFO] [stdout]     |
[INFO] [stdout] 303 |     fn ulps_eq(&self, other: &Self, epsilon: Self::Epsilon, max_ulps: u32) -> bool {
[INFO] [stdout]     |                                                             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_max_ulps`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/lib.rs:423:22
[INFO] [stdout]     |
[INFO] [stdout] 423 |     fn mul_add(self, a: Self, b: Self) -> Self {
[INFO] [stdout]     |                      ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/lib.rs:423:31
[INFO] [stdout]     |
[INFO] [stdout] 423 |     fn mul_add(self, a: Self, b: Self) -> Self {
[INFO] [stdout]     |                               ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> src/lib.rs:433:19
[INFO] [stdout]     |
[INFO] [stdout] 433 |     fn powi(self, n: i32) -> Self {
[INFO] [stdout]     |                   ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> src/lib.rs:438:19
[INFO] [stdout]     |
[INFO] [stdout] 438 |     fn powf(self, n: Self) -> Self {
[INFO] [stdout]     |                   ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `base`
[INFO] [stdout]    --> src/lib.rs:463:18
[INFO] [stdout]     |
[INFO] [stdout] 463 |     fn log(self, base: Self) -> Self {
[INFO] [stdout]     |                  ^^^^ help: if this is intentional, prefix it with an underscore: `_base`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]    --> src/lib.rs:478:18
[INFO] [stdout]     |
[INFO] [stdout] 478 |     fn max(self, other: Self) -> Self {
[INFO] [stdout]     |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]    --> src/lib.rs:483:18
[INFO] [stdout]     |
[INFO] [stdout] 483 |     fn min(self, other: Self) -> Self {
[INFO] [stdout]     |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]    --> src/lib.rs:488:22
[INFO] [stdout]     |
[INFO] [stdout] 488 |     fn abs_sub(self, other: Self) -> Self {
[INFO] [stdout]     |                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]    --> src/lib.rs:498:20
[INFO] [stdout]     |
[INFO] [stdout] 498 |     fn hypot(self, other: Self) -> Self {
[INFO] [stdout]     |                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]    --> src/lib.rs:533:20
[INFO] [stdout]     |
[INFO] [stdout] 533 |     fn atan2(self, other: Self) -> Self {
[INFO] [stdout]     |                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `det`
[INFO] [stdout]    --> src/lib.rs:656:13
[INFO] [stdout]     |
[INFO] [stdout] 656 |         let det = ::cgmath::Matrix2::new(a.x, a.y,
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_det`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 21 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.16s
[INFO] running `Command { std: "docker" "inspect" "37ee74efb1f1011a40fbac4af7c9cb18a52dc6f42e1355c43f6bdb8cfac6883e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37ee74efb1f1011a40fbac4af7c9cb18a52dc6f42e1355c43f6bdb8cfac6883e", kill_on_drop: false }`
[INFO] [stdout] 37ee74efb1f1011a40fbac4af7c9cb18a52dc6f42e1355c43f6bdb8cfac6883e