[INFO] fetching crate r30_rs 0.1.0...
[INFO] building r30_rs-0.1.0 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate r30_rs 0.1.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate r30_rs 0.1.0
[INFO] finished tweaking crates.io crate r30_rs 0.1.0
[INFO] tweaked toml for crates.io crate r30_rs 0.1.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate r30_rs 0.1.0 on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate r30_rs 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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3643995188d27dcc3dfb6160262bf989b204f71dc4276b8bb425aa143f1e9dfb
[INFO] running `Command { std: "docker" "start" "-a" "3643995188d27dcc3dfb6160262bf989b204f71dc4276b8bb425aa143f1e9dfb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3643995188d27dcc3dfb6160262bf989b204f71dc4276b8bb425aa143f1e9dfb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3643995188d27dcc3dfb6160262bf989b204f71dc4276b8bb425aa143f1e9dfb", kill_on_drop: false }`
[INFO] [stdout] 3643995188d27dcc3dfb6160262bf989b204f71dc4276b8bb425aa143f1e9dfb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 838e3201a602527e3c438bd5bbe79b28183346a0c09b9cfb50c1a5a7134b03db
[INFO] running `Command { std: "docker" "start" "-a" "838e3201a602527e3c438bd5bbe79b28183346a0c09b9cfb50c1a5a7134b03db", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.144
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling getrandom v0.2.9
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling r30_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/r30.rs:131:64
[INFO] [stdout]     |
[INFO] [stdout] 131 |     pub fn rand_choice<'a, T>(&'a mut self, xs: &'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] 131 |     pub fn rand_choice<'a, T>(&'a mut self, xs: &'a Vec<T>) -> &'a T {
[INFO] [stdout]     |                                                                 ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.68s
[INFO] running `Command { std: "docker" "inspect" "838e3201a602527e3c438bd5bbe79b28183346a0c09b9cfb50c1a5a7134b03db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "838e3201a602527e3c438bd5bbe79b28183346a0c09b9cfb50c1a5a7134b03db", kill_on_drop: false }`
[INFO] [stdout] 838e3201a602527e3c438bd5bbe79b28183346a0c09b9cfb50c1a5a7134b03db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5478458d5a260540b354741b2b88fe234deb9a85e2bb20da2e7bc790a4bb76de
[INFO] running `Command { std: "docker" "start" "-a" "5478458d5a260540b354741b2b88fe234deb9a85e2bb20da2e7bc790a4bb76de", kill_on_drop: false }`
[INFO] [stderr]    Compiling r30_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/r30.rs:131:64
[INFO] [stdout]     |
[INFO] [stdout] 131 |     pub fn rand_choice<'a, T>(&'a mut self, xs: &'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] 131 |     pub fn rand_choice<'a, T>(&'a mut self, xs: &'a Vec<T>) -> &'a T {
[INFO] [stdout]     |                                                                 ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/r30.rs:131:64
[INFO] [stdout]     |
[INFO] [stdout] 131 |     pub fn rand_choice<'a, T>(&'a mut self, xs: &'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] 131 |     pub fn rand_choice<'a, T>(&'a mut self, xs: &'a Vec<T>) -> &'a T {
[INFO] [stdout]     |                                                                 ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `a` should have an upper case name
[INFO] [stdout]   --> src/lib.rs:60:15
[INFO] [stdout]    |
[INFO] [stdout] 60 |         const a: u64 = 1;
[INFO] [stdout]    |               ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_upper_case_globals)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] help: convert the identifier to upper case
[INFO] [stdout]    |
[INFO] [stdout] 60 -         const a: u64 = 1;
[INFO] [stdout] 60 +         const A: u64 = 1;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `b` should have an upper case name
[INFO] [stdout]   --> src/lib.rs:61:15
[INFO] [stdout]    |
[INFO] [stdout] 61 |         const b: u64 = 100;
[INFO] [stdout]    |               ^
[INFO] [stdout]    |
[INFO] [stdout] help: convert the identifier to upper case
[INFO] [stdout]    |
[INFO] [stdout] 61 -         const b: u64 = 100;
[INFO] [stdout] 61 +         const B: u64 = 100;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.21s
[INFO] running `Command { std: "docker" "inspect" "5478458d5a260540b354741b2b88fe234deb9a85e2bb20da2e7bc790a4bb76de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5478458d5a260540b354741b2b88fe234deb9a85e2bb20da2e7bc790a4bb76de", kill_on_drop: false }`
[INFO] [stdout] 5478458d5a260540b354741b2b88fe234deb9a85e2bb20da2e7bc790a4bb76de