[INFO] fetching crate r30_rs 0.1.0...
[INFO] checking r30_rs-0.1.0 against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1
[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 a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "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" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ebf3799951ac053ab6f7db831bd3967471d54aed163e0345ec5e9e67c93d4701
[INFO] running `Command { std: "docker" "start" "-a" "ebf3799951ac053ab6f7db831bd3967471d54aed163e0345ec5e9e67c93d4701", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ebf3799951ac053ab6f7db831bd3967471d54aed163e0345ec5e9e67c93d4701", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebf3799951ac053ab6f7db831bd3967471d54aed163e0345ec5e9e67c93d4701", kill_on_drop: false }`
[INFO] [stdout] ebf3799951ac053ab6f7db831bd3967471d54aed163e0345ec5e9e67c93d4701
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 61e31f16a78d3aa8ddbb11addc2134782bbe2bb9181f2c0d557036559ef7de0e
[INFO] running `Command { std: "docker" "start" "-a" "61e31f16a78d3aa8ddbb11addc2134782bbe2bb9181f2c0d557036559ef7de0e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.144
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking getrandom v0.2.9
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking 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:131:32
[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:131:32
[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)]` 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 `dev` profile [unoptimized + debuginfo] target(s) in 2.93s
[INFO] running `Command { std: "docker" "inspect" "61e31f16a78d3aa8ddbb11addc2134782bbe2bb9181f2c0d557036559ef7de0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61e31f16a78d3aa8ddbb11addc2134782bbe2bb9181f2c0d557036559ef7de0e", kill_on_drop: false }`
[INFO] [stdout] 61e31f16a78d3aa8ddbb11addc2134782bbe2bb9181f2c0d557036559ef7de0e