[INFO] fetching crate randlib 0.2.0...
[INFO] building randlib-0.2.0 against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] extracting crate randlib 0.2.0 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate randlib 0.2.0
[INFO] finished tweaking crates.io crate randlib 0.2.0
[INFO] tweaked toml for crates.io crate randlib 0.2.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate randlib 0.2.0 on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate randlib 0.2.0 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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "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-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ec258fdbdcc42343085a7092861f2b41116e8f34393dace9e1f56bef638707ea
[INFO] running `Command { std: "docker" "start" "-a" "ec258fdbdcc42343085a7092861f2b41116e8f34393dace9e1f56bef638707ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ec258fdbdcc42343085a7092861f2b41116e8f34393dace9e1f56bef638707ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec258fdbdcc42343085a7092861f2b41116e8f34393dace9e1f56bef638707ea", kill_on_drop: false }`
[INFO] [stdout] ec258fdbdcc42343085a7092861f2b41116e8f34393dace9e1f56bef638707ea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ddc87f0ea284e6e14c05e2d77f3b808f1bc05e74b4e197b71b9bea2c0e23f1c5
[INFO] running `Command { std: "docker" "start" "-a" "ddc87f0ea284e6e14c05e2d77f3b808f1bc05e74b4e197b71b9bea2c0e23f1c5", kill_on_drop: false }`
[INFO] [stderr]    Compiling randlib v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:339:69
[INFO] [stdout]     |
[INFO] [stdout] 339 |     pub fn rand_element<'a, T>(&'a mut self, vector: &'a Vec<T>) -> &T {
[INFO] [stdout]     |                                 --                    --            ^^ the same lifetime is elided here
[INFO] [stdout]     |                                 |                     |
[INFO] [stdout]     |                                 |                     the lifetime is named here
[INFO] [stdout]     |                                 the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 339 |     pub fn rand_element<'a, T>(&'a mut self, vector: &'a Vec<T>) -> &'a T {
[INFO] [stdout]     |                                                                      ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] running `Command { std: "docker" "inspect" "ddc87f0ea284e6e14c05e2d77f3b808f1bc05e74b4e197b71b9bea2c0e23f1c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ddc87f0ea284e6e14c05e2d77f3b808f1bc05e74b4e197b71b9bea2c0e23f1c5", kill_on_drop: false }`
[INFO] [stdout] ddc87f0ea284e6e14c05e2d77f3b808f1bc05e74b4e197b71b9bea2c0e23f1c5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0a8c5f9e42f481c5f6d24de9c1f1fb90dbb174c1427ff9539a0a56de5992c430
[INFO] running `Command { std: "docker" "start" "-a" "0a8c5f9e42f481c5f6d24de9c1f1fb90dbb174c1427ff9539a0a56de5992c430", kill_on_drop: false }`
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:339:69
[INFO] [stdout]     |
[INFO] [stdout] 339 |     pub fn rand_element<'a, T>(&'a mut self, vector: &'a Vec<T>) -> &T {
[INFO] [stdout]     |                                 --                    --            ^^ the same lifetime is elided here
[INFO] [stdout]     |                                 |                     |
[INFO] [stdout]     |                                 |                     the lifetime is named here
[INFO] [stdout]     |                                 the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 339 |     pub fn rand_element<'a, T>(&'a mut self, vector: &'a Vec<T>) -> &'a T {
[INFO] [stdout]     |                                                                      ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling randlib v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:339:69
[INFO] [stdout]     |
[INFO] [stdout] 339 |     pub fn rand_element<'a, T>(&'a mut self, vector: &'a Vec<T>) -> &T {
[INFO] [stdout]     |                                 --                    --            ^^ the same lifetime is elided here
[INFO] [stdout]     |                                 |                     |
[INFO] [stdout]     |                                 |                     the lifetime is named here
[INFO] [stdout]     |                                 the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 339 |     pub fn rand_element<'a, T>(&'a mut self, vector: &'a Vec<T>) -> &'a T {
[INFO] [stdout]     |                                                                      ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.26s
[INFO] running `Command { std: "docker" "inspect" "0a8c5f9e42f481c5f6d24de9c1f1fb90dbb174c1427ff9539a0a56de5992c430", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a8c5f9e42f481c5f6d24de9c1f1fb90dbb174c1427ff9539a0a56de5992c430", kill_on_drop: false }`
[INFO] [stdout] 0a8c5f9e42f481c5f6d24de9c1f1fb90dbb174c1427ff9539a0a56de5992c430