[INFO] cloning repository https://github.com/yashsriram/prob_rob
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yashsriram/prob_rob" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyashsriram%2Fprob_rob", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyashsriram%2Fprob_rob'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 526d0ff355a8ee0d1b9fd004f71016abe5ff1cb2
[INFO] testing yashsriram/prob_rob against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyashsriram%2Fprob_rob" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/yashsriram/prob_rob
[INFO] finished tweaking git repo https://github.com/yashsriram/prob_rob
[INFO] tweaked toml for git repo https://github.com/yashsriram/prob_rob written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/yashsriram/prob_rob on toolchain b83b707f97d809763b7861afa7638871f3339a33
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/yashsriram/prob_rob 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" "+b83b707f97d809763b7861afa7638871f3339a33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 64fd513f50f46a3e376cd49fdf0968b043d91afa38f24449d6a5357c92ad9c5f
[INFO] running `Command { std: "docker" "start" "-a" "64fd513f50f46a3e376cd49fdf0968b043d91afa38f24449d6a5357c92ad9c5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "64fd513f50f46a3e376cd49fdf0968b043d91afa38f24449d6a5357c92ad9c5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64fd513f50f46a3e376cd49fdf0968b043d91afa38f24449d6a5357c92ad9c5f", kill_on_drop: false }`
[INFO] [stdout] 64fd513f50f46a3e376cd49fdf0968b043d91afa38f24449d6a5357c92ad9c5f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 17138132bd841587aa9e588a10052ccba60458aef405162fd60953d98da70f93
[INFO] running `Command { std: "docker" "start" "-a" "17138132bd841587aa9e588a10052ccba60458aef405162fd60953d98da70f93", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling getrandom v0.2.12
[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 prob_rob v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.82s
[INFO] running `Command { std: "docker" "inspect" "17138132bd841587aa9e588a10052ccba60458aef405162fd60953d98da70f93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17138132bd841587aa9e588a10052ccba60458aef405162fd60953d98da70f93", kill_on_drop: false }`
[INFO] [stdout] 17138132bd841587aa9e588a10052ccba60458aef405162fd60953d98da70f93
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c2714c773b8613ecf03c4e5f3d77113e03496289a4ff32a4b0f595f40bde01a5
[INFO] running `Command { std: "docker" "start" "-a" "c2714c773b8613ecf03c4e5f3d77113e03496289a4ff32a4b0f595f40bde01a5", kill_on_drop: false }`
[INFO] [stderr]    Compiling prob_rob v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `A` is never used
[INFO] [stdout]   --> examples/ch2-1.rs:18:11
[INFO] [stdout]    |
[INFO] [stdout] 18 |     trait A {}
[INFO] [stdout]    |           ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `T` should have a snake case name
[INFO] [stdout]  --> examples/ch2-2.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let T = [
[INFO] [stdout]   |         ^ help: convert the identifier to snake case: `t`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `Command { std: "docker" "inspect" "c2714c773b8613ecf03c4e5f3d77113e03496289a4ff32a4b0f595f40bde01a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2714c773b8613ecf03c4e5f3d77113e03496289a4ff32a4b0f595f40bde01a5", kill_on_drop: false }`
[INFO] [stdout] c2714c773b8613ecf03c4e5f3d77113e03496289a4ff32a4b0f595f40bde01a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 50c820e804342252b784a8cbcdf525147454d8a486964fd3e644bf571e21cd90
[INFO] running `Command { std: "docker" "start" "-a" "50c820e804342252b784a8cbcdf525147454d8a486964fd3e644bf571e21cd90", kill_on_drop: false }`
[INFO] [stderr] warning: variable `T` should have a snake case name
[INFO] [stderr]  --> examples/ch2-2.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let T = [
[INFO] [stderr]   |         ^ help: convert the identifier to snake case: `t`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `prob_rob` (example "ch2-2") generated 1 warning
[INFO] [stderr] warning: trait `A` is never used
[INFO] [stderr]   --> examples/ch2-1.rs:18:11
[INFO] [stderr]    |
[INFO] [stderr] 18 |     trait A {}
[INFO] [stderr]    |           ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `prob_rob` (example "ch2-1") generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/prob_rob-1168cc14b16ac448)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "50c820e804342252b784a8cbcdf525147454d8a486964fd3e644bf571e21cd90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50c820e804342252b784a8cbcdf525147454d8a486964fd3e644bf571e21cd90", kill_on_drop: false }`
[INFO] [stdout] 50c820e804342252b784a8cbcdf525147454d8a486964fd3e644bf571e21cd90