[INFO] fetching crate doctor-syn 0.1.0...
[INFO] checking doctor-syn-0.1.0 against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] extracting crate doctor-syn 0.1.0 into /workspace/builds/worker-78/source
[INFO] validating manifest of crates.io crate doctor-syn 0.1.0 on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate doctor-syn 0.1.0
[INFO] finished tweaking crates.io crate doctor-syn 0.1.0
[INFO] tweaked toml for crates.io crate doctor-syn 0.1.0 written to /workspace/builds/worker-78/source/Cargo.toml
[INFO] crate crates.io crate doctor-syn 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "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-78/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 69ada8292eec92979cdbfd1c0023ebe0b52d17737f0a251cf94298c91af3899a
[INFO] running `Command { std: "docker" "start" "-a" "69ada8292eec92979cdbfd1c0023ebe0b52d17737f0a251cf94298c91af3899a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "69ada8292eec92979cdbfd1c0023ebe0b52d17737f0a251cf94298c91af3899a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69ada8292eec92979cdbfd1c0023ebe0b52d17737f0a251cf94298c91af3899a", kill_on_drop: false }`
[INFO] [stdout] 69ada8292eec92979cdbfd1c0023ebe0b52d17737f0a251cf94298c91af3899a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7919e92a125ee42afc99c7440260ba4208be32ac1f066735316516a37cb11c20
[INFO] running `Command { std: "docker" "start" "-a" "7919e92a125ee42afc99c7440260ba4208be32ac1f066735316516a37cb11c20", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking quote v1.0.9
[INFO] [stderr]     Checking doctor-syn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `sin`
[INFO] [stdout]  --> src/bin/libmgen.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn sin(x: f32) -> f32 {
[INFO] [stdout]   |    ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `cos`
[INFO] [stdout]   --> src/bin/libmgen.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn cos(x: f32) -> f32 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `exp`
[INFO] [stdout]   --> src/bin/libmgen.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn exp(x: f32) -> f32 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `ln`
[INFO] [stdout]   --> src/bin/libmgen.rs:44:4
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn ln(x: f32) -> f32 {
[INFO] [stdout]    |    ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_sin`
[INFO] [stdout]    --> src/bin/libmgen.rs:141:4
[INFO] [stdout]     |
[INFO] [stdout] 141 | fn test_sin() {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_cos`
[INFO] [stdout]    --> src/bin/libmgen.rs:155:4
[INFO] [stdout]     |
[INFO] [stdout] 155 | fn test_cos() {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_exp`
[INFO] [stdout]    --> src/bin/libmgen.rs:169:4
[INFO] [stdout]     |
[INFO] [stdout] 169 | fn test_exp() {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_ln`
[INFO] [stdout]    --> src/bin/libmgen.rs:183:4
[INFO] [stdout]     |
[INFO] [stdout] 183 | fn test_ln() {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sin`
[INFO] [stdout]  --> src/bin/libmgen.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn sin(x: f32) -> f32 {
[INFO] [stdout]   |    ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `cos`
[INFO] [stdout]   --> src/bin/libmgen.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn cos(x: f32) -> f32 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `exp`
[INFO] [stdout]   --> src/bin/libmgen.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn exp(x: f32) -> f32 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `ln`
[INFO] [stdout]   --> src/bin/libmgen.rs:44:4
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn ln(x: f32) -> f32 {
[INFO] [stdout]    |    ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_sin`
[INFO] [stdout]    --> src/bin/libmgen.rs:141:4
[INFO] [stdout]     |
[INFO] [stdout] 141 | fn test_sin() {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_cos`
[INFO] [stdout]    --> src/bin/libmgen.rs:155:4
[INFO] [stdout]     |
[INFO] [stdout] 155 | fn test_cos() {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_exp`
[INFO] [stdout]    --> src/bin/libmgen.rs:169:4
[INFO] [stdout]     |
[INFO] [stdout] 169 | fn test_exp() {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_ln`
[INFO] [stdout]    --> src/bin/libmgen.rs:183:4
[INFO] [stdout]     |
[INFO] [stdout] 183 | fn test_ln() {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.21s
[INFO] running `Command { std: "docker" "inspect" "7919e92a125ee42afc99c7440260ba4208be32ac1f066735316516a37cb11c20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7919e92a125ee42afc99c7440260ba4208be32ac1f066735316516a37cb11c20", kill_on_drop: false }`
[INFO] [stdout] 7919e92a125ee42afc99c7440260ba4208be32ac1f066735316516a37cb11c20