[INFO] fetching crate lcg-rand 1.0.0...
[INFO] checking lcg-rand-1.0.0 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate lcg-rand 1.0.0 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate lcg-rand 1.0.0
[INFO] finished tweaking crates.io crate lcg-rand 1.0.0
[INFO] tweaked toml for crates.io crate lcg-rand 1.0.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate lcg-rand 1.0.0 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 57bfa7f8182e7015c25c3bf9e07943f2d96d060bb6f7fa4ff83ed3db737803ff
[INFO] running `Command { std: "docker" "start" "-a" "57bfa7f8182e7015c25c3bf9e07943f2d96d060bb6f7fa4ff83ed3db737803ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "57bfa7f8182e7015c25c3bf9e07943f2d96d060bb6f7fa4ff83ed3db737803ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57bfa7f8182e7015c25c3bf9e07943f2d96d060bb6f7fa4ff83ed3db737803ff", kill_on_drop: false }`
[INFO] [stdout] 57bfa7f8182e7015c25c3bf9e07943f2d96d060bb6f7fa4ff83ed3db737803ff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c928a8068cea533b37871e154d0dfae74c64b6e9d5663577707801d9940cdf2a
[INFO] running `Command { std: "docker" "start" "-a" "c928a8068cea533b37871e154d0dfae74c64b6e9d5663577707801d9940cdf2a", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]     Checking lcg-rand v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/lib.rs:78:31
[INFO] [stdout]    |
[INFO] [stdout] 78 |         pub fn choose<'a, T>(&'a mut self, v: &'a [T]) -> &T {
[INFO] [stdout]    |                               ^^               ^^         -- the lifetime gets resolved as `'a`
[INFO] [stdout]    |                               |                |
[INFO] [stdout]    |                               |                these lifetimes flow to the output
[INFO] [stdout]    |                               these lifetimes flow to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 78 |         pub fn choose<'a, T>(&'a mut self, v: &'a [T]) -> &'a T {
[INFO] [stdout]    |                                                            ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/lib.rs:78:31
[INFO] [stdout]    |
[INFO] [stdout] 78 |         pub fn choose<'a, T>(&'a mut self, v: &'a [T]) -> &T {
[INFO] [stdout]    |                               ^^               ^^         -- the lifetime gets resolved as `'a`
[INFO] [stdout]    |                               |                |
[INFO] [stdout]    |                               |                these lifetimes flow to the output
[INFO] [stdout]    |                               these lifetimes flow to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 78 |         pub fn choose<'a, T>(&'a mut self, v: &'a [T]) -> &'a T {
[INFO] [stdout]    |                                                            ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.23s
[INFO] running `Command { std: "docker" "inspect" "c928a8068cea533b37871e154d0dfae74c64b6e9d5663577707801d9940cdf2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c928a8068cea533b37871e154d0dfae74c64b6e9d5663577707801d9940cdf2a", kill_on_drop: false }`
[INFO] [stdout] c928a8068cea533b37871e154d0dfae74c64b6e9d5663577707801d9940cdf2a