[INFO] cloning repository https://github.com/Tahler/snoss
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Tahler/snoss" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTahler%2Fsnoss", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTahler%2Fsnoss'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d4dca754c3e97fa7119cc71170c5f54a8a3e71d8
[INFO] testing Tahler/snoss against try#ce59db7a1b1b012fb2793c4641c1bdecad7a128b for pr-85530
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTahler%2Fsnoss" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Tahler/snoss on toolchain ce59db7a1b1b012fb2793c4641c1bdecad7a128b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Tahler/snoss
[INFO] finished tweaking git repo https://github.com/Tahler/snoss
[INFO] tweaked toml for git repo https://github.com/Tahler/snoss written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/Tahler/snoss already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded crossbeam v0.2.10
[INFO] [stderr]   Downloaded quick-error v1.1.0
[INFO] [stderr]   Downloaded humantime v1.0.0
[INFO] [stderr]   Downloaded libc v0.2.20
[INFO] [stderr]   Downloaded redox_syscall v0.1.16
[INFO] [stderr]   Downloaded ordered-float v0.4.0
[INFO] [stderr]   Downloaded flate2 v0.2.17
[INFO] [stderr]   Downloaded serde_json v0.9.6
[INFO] [stderr]   Downloaded syn v0.11.4
[INFO] [stderr]   Downloaded gcc v0.3.43
[INFO] [stderr]   Downloaded serde-value v0.4.0
[INFO] [stderr]   Downloaded quote v0.3.12
[INFO] [stderr]   Downloaded serde_derive v0.9.7
[INFO] [stderr]   Downloaded chrono v0.3.0
[INFO] [stderr]   Downloaded serde_codegen_internals v0.13.0
[INFO] [stderr]   Downloaded log4rs v0.6.1
[INFO] [stderr]   Downloaded serde_yaml v0.6.1
[INFO] [stderr]   Downloaded serde v0.9.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e6254c3acb741dd2efede093d5942eb37be677eaf496cd1c2880803682de3cbf
[INFO] running `Command { std: "docker" "start" "-a" "e6254c3acb741dd2efede093d5942eb37be677eaf496cd1c2880803682de3cbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e6254c3acb741dd2efede093d5942eb37be677eaf496cd1c2880803682de3cbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6254c3acb741dd2efede093d5942eb37be677eaf496cd1c2880803682de3cbf", kill_on_drop: false }`
[INFO] [stdout] e6254c3acb741dd2efede093d5942eb37be677eaf496cd1c2880803682de3cbf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0f5880db0481d732f4077be40940f34ea78b56198bb6be9bc083f85191878f6c
[INFO] running `Command { std: "docker" "start" "-a" "0f5880db0481d732f4077be40940f34ea78b56198bb6be9bc083f85191878f6c", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.1.36
[INFO] [stderr]    Compiling serde v0.9.7
[INFO] [stderr]    Compiling quote v0.3.12
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling linked-hash-map v0.3.0
[INFO] [stderr]    Compiling quick-error v1.1.0
[INFO] [stderr]    Compiling fnv v1.0.5
[INFO] [stderr]    Compiling log-mdc v0.1.0
[INFO] [stderr]    Compiling crossbeam v0.2.10
[INFO] [stderr]    Compiling time v0.1.36
[INFO] [stderr]    Compiling miniz-sys v0.1.9
[INFO] [stderr]    Compiling unreachable v0.1.1
[INFO] [stderr]    Compiling humantime v1.0.0
[INFO] [stderr]    Compiling yaml-rust v0.3.5
[INFO] [stderr]    Compiling syn v0.11.4
[INFO] [stderr]    Compiling num-integer v0.1.32
[INFO] [stderr]    Compiling ordered-float v0.4.0
[INFO] [stderr]    Compiling enum_primitive v0.1.1
[INFO] [stderr]    Compiling num-iter v0.1.32
[INFO] [stderr]    Compiling num v0.1.36
[INFO] [stderr]    Compiling chrono v0.3.0
[INFO] [stderr]    Compiling flate2 v0.2.17
[INFO] [stderr]    Compiling serde_codegen_internals v0.13.0
[INFO] [stderr]    Compiling serde_derive v0.9.7
[INFO] [stderr]    Compiling serde_yaml v0.6.1
[INFO] [stderr]    Compiling serde_json v0.9.6
[INFO] [stderr]    Compiling serde-value v0.4.0
[INFO] [stderr]    Compiling log4rs v0.6.1
[INFO] [stderr]    Compiling snoss v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/os/exec.rs:194:13
[INFO] [stdout]     |
[INFO] [stdout] 194 |         let mut stack = pcb.get_stack_mut();
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.08s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0f5880db0481d732f4077be40940f34ea78b56198bb6be9bc083f85191878f6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f5880db0481d732f4077be40940f34ea78b56198bb6be9bc083f85191878f6c", kill_on_drop: false }`
[INFO] [stdout] 0f5880db0481d732f4077be40940f34ea78b56198bb6be9bc083f85191878f6c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8f3937cef0bf263c92296bd6f9daf38d4609e0ccd0b4a9321b0398562eca5c8b
[INFO] running `Command { std: "docker" "start" "-a" "8f3937cef0bf263c92296bd6f9daf38d4609e0ccd0b4a9321b0398562eca5c8b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling snoss v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/os/exec.rs:194:13
[INFO] [stdout]     |
[INFO] [stdout] 194 |         let mut stack = pcb.get_stack_mut();
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.32s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8f3937cef0bf263c92296bd6f9daf38d4609e0ccd0b4a9321b0398562eca5c8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f3937cef0bf263c92296bd6f9daf38d4609e0ccd0b4a9321b0398562eca5c8b", kill_on_drop: false }`
[INFO] [stdout] 8f3937cef0bf263c92296bd6f9daf38d4609e0ccd0b4a9321b0398562eca5c8b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e5d970d92f6d90deab59c28579a6ddaca6442b1565a0abf23f2b975c028573af
[INFO] running `Command { std: "docker" "start" "-a" "e5d970d92f6d90deab59c28579a6ddaca6442b1565a0abf23f2b975c028573af", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/os/exec.rs:194:13
[INFO] [stderr]     |
[INFO] [stderr] 194 |         let mut stack = pcb.get_stack_mut();
[INFO] [stderr]     |             ----^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/snoss-a1d931acb2dc1340)
[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" "e5d970d92f6d90deab59c28579a6ddaca6442b1565a0abf23f2b975c028573af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5d970d92f6d90deab59c28579a6ddaca6442b1565a0abf23f2b975c028573af", kill_on_drop: false }`
[INFO] [stdout] e5d970d92f6d90deab59c28579a6ddaca6442b1565a0abf23f2b975c028573af