[INFO] cloning repository https://github.com/ddowl/snakers
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ddowl/snakers" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fddowl%2Fsnakers", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fddowl%2Fsnakers'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4ee47b151509b6a55e95afb015eb80bc3e1cae70
[INFO] testing ddowl/snakers against try#8da20828b6ea601dfd8e2448cb50ace88876bd78 for pr-150933
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fddowl%2Fsnakers" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ddowl/snakers
[INFO] finished tweaking git repo https://github.com/ddowl/snakers
[INFO] tweaked toml for git repo https://github.com/ddowl/snakers written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ddowl/snakers on toolchain 8da20828b6ea601dfd8e2448cb50ace88876bd78
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ddowl/snakers 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" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "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 rand_xorshift v0.1.1
[INFO] [stderr]   Downloaded rand_pcg v0.1.2
[INFO] [stderr]   Downloaded rand_core v0.4.0
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[INFO] [stderr]   Downloaded rand_os v0.1.3
[INFO] [stderr]   Downloaded autocfg v0.1.2
[INFO] [stderr]   Downloaded maplit v1.0.1
[INFO] [stderr]   Downloaded enum-map v0.5.0
[INFO] [stderr]   Downloaded bitflags v1.0.4
[INFO] [stderr]   Downloaded rand v0.6.5
[INFO] [stderr]   Downloaded num v0.2.0
[INFO] [stderr]   Downloaded pkg-config v0.3.14
[INFO] [stderr]   Downloaded enumset_derive v0.3.2
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[INFO] [stderr]   Downloaded num-complex v0.2.1
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[INFO] [stderr]   Downloaded cfg-if v0.1.7
[INFO] [stderr]   Downloaded rand_chacha v0.1.1
[INFO] [stderr]   Downloaded enum-map-derive v0.4.1
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[INFO] [stderr]   Downloaded redox_syscall v0.1.54
[INFO] [stderr]   Downloaded log v0.4.6
[INFO] [stderr]   Downloaded time v0.1.42
[INFO] [stderr]   Downloaded quote v0.6.12
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[INFO] [stderr]   Downloaded hashbrown v0.2.2
[INFO] [stderr]   Downloaded serde v1.0.90
[INFO] [stderr]   Downloaded chrono v0.4.6
[INFO] [stderr]   Downloaded syn v0.14.9
[INFO] [stderr]   Downloaded syn v0.15.33
[INFO] [stderr]   Downloaded cursive v0.11.2
[INFO] [stderr]   Downloaded unicode-segmentation v1.2.1
[INFO] [stderr]   Downloaded cc v1.0.36
[INFO] [stderr]   Downloaded toml v0.5.0
[INFO] [stderr]   Downloaded smallvec v0.6.9
[INFO] [stderr]   Downloaded proc-macro2 v0.4.29
[INFO] [stderr]   Downloaded num-traits v0.2.6
[INFO] [stderr]   Downloaded arc-swap v0.3.11
[INFO] [stderr]   Downloaded xi-unicode v0.1.0
[INFO] [stderr]   Downloaded num-integer v0.1.39
[INFO] [stderr]   Downloaded signal-hook-registry v1.0.1
[INFO] [stderr]   Downloaded signal-hook v0.1.9
[INFO] [stderr]   Downloaded num-rational v0.2.1
[INFO] [stderr]   Downloaded libc v0.2.53
[INFO] [stderr]   Downloaded cloudabi v0.0.3
[INFO] [stderr]   Downloaded rand_jitter v0.1.4
[INFO] [stderr]   Downloaded array-macro v1.0.3
[INFO] [stderr]   Downloaded num-iter v0.1.37
[INFO] [stderr]   Downloaded lazy_static v1.3.0
[INFO] [stderr]   Downloaded rand_isaac v0.1.1
[INFO] [stderr]   Downloaded unicode-width v0.1.5
[INFO] [stderr]   Downloaded rand_hc v0.1.0
[INFO] [stderr]   Downloaded stable_deref_trait v1.1.1
[INFO] [stderr]   Downloaded owning_ref v0.4.0
[INFO] [stderr]   Downloaded fuchsia-cprng v0.1.1
[INFO] [stderr]   Downloaded winapi v0.3.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:cfa559dde23f44738f9990739aaa3487d8df3af37eb5df0572f7cf76004a604a" "/opt/rustwide/cargo-home/bin/cargo" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cb61ebae2b81c35aa52f4f89f10e6436a441c3adf7597f48ebaea555044fe642
[INFO] running `Command { std: "docker" "start" "-a" "cb61ebae2b81c35aa52f4f89f10e6436a441c3adf7597f48ebaea555044fe642", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cb61ebae2b81c35aa52f4f89f10e6436a441c3adf7597f48ebaea555044fe642", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb61ebae2b81c35aa52f4f89f10e6436a441c3adf7597f48ebaea555044fe642", kill_on_drop: false }`
[INFO] [stdout] cb61ebae2b81c35aa52f4f89f10e6436a441c3adf7597f48ebaea555044fe642
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:cfa559dde23f44738f9990739aaa3487d8df3af37eb5df0572f7cf76004a604a" "/opt/rustwide/cargo-home/bin/cargo" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5cba2facd7c893f34a1992a8f3ea2aa2963d2fadac43e29c9b281296d17f19b3
[INFO] running `Command { std: "docker" "start" "-a" "5cba2facd7c893f34a1992a8f3ea2aa2963d2fadac43e29c9b281296d17f19b3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.53
[INFO] [stderr]    Compiling proc-macro2 v0.4.29
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling rand_core v0.4.0
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling syn v0.15.33
[INFO] [stderr]    Compiling cc v1.0.36
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling pkg-config v0.3.14
[INFO] [stderr]    Compiling cfg-if v0.1.7
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]    Compiling serde v1.0.90
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling lazy_static v1.3.0
[INFO] [stderr]    Compiling arc-swap v0.3.11
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]    Compiling array-macro v1.0.3
[INFO] [stderr]    Compiling crossbeam-utils v0.6.5
[INFO] [stderr]    Compiling enum-map-internals v0.1.2
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling ncurses v5.99.0
[INFO] [stderr]    Compiling signal-hook-registry v1.0.1
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling smallvec v0.6.9
[INFO] [stderr]    Compiling stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling owning_ref v0.4.0
[INFO] [stderr]    Compiling chrono v0.4.6
[INFO] [stderr]    Compiling crossbeam-channel v0.3.8
[INFO] [stderr]    Compiling num v0.2.0
[INFO] [stderr]    Compiling signal-hook v0.1.9
[INFO] [stderr]    Compiling term_size v0.3.1
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling hashbrown v0.2.2
[INFO] [stderr]    Compiling xi-unicode v0.1.0
[INFO] [stderr]    Compiling maplit v1.0.1
[INFO] [stderr]    Compiling unicode-width v0.1.5
[INFO] [stderr]    Compiling unicode-segmentation v1.2.1
[INFO] [stderr]    Compiling enum-map-derive v0.4.1
[INFO] [stderr]    Compiling enumset_derive v0.3.2
[INFO] [stderr]    Compiling enum-map v0.5.0
[INFO] [stderr]    Compiling enumset v0.3.19
[INFO] [stderr]    Compiling toml v0.5.0
[INFO] [stderr]    Compiling cursive v0.11.2
[INFO] [stderr]    Compiling snakers v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.92s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: syn v0.14.9
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "5cba2facd7c893f34a1992a8f3ea2aa2963d2fadac43e29c9b281296d17f19b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5cba2facd7c893f34a1992a8f3ea2aa2963d2fadac43e29c9b281296d17f19b3", kill_on_drop: false }`
[INFO] [stdout] 5cba2facd7c893f34a1992a8f3ea2aa2963d2fadac43e29c9b281296d17f19b3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:cfa559dde23f44738f9990739aaa3487d8df3af37eb5df0572f7cf76004a604a" "/opt/rustwide/cargo-home/bin/cargo" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4049eb09c3999d1944843e1b247034dbcdeb433545e680d5f7b45b23577914dd
[INFO] running `Command { std: "docker" "start" "-a" "4049eb09c3999d1944843e1b247034dbcdeb433545e680d5f7b45b23577914dd", kill_on_drop: false }`
[INFO] [stderr]    Compiling snakers v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.46s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: syn v0.14.9
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "4049eb09c3999d1944843e1b247034dbcdeb433545e680d5f7b45b23577914dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4049eb09c3999d1944843e1b247034dbcdeb433545e680d5f7b45b23577914dd", kill_on_drop: false }`
[INFO] [stdout] 4049eb09c3999d1944843e1b247034dbcdeb433545e680d5f7b45b23577914dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:cfa559dde23f44738f9990739aaa3487d8df3af37eb5df0572f7cf76004a604a" "/opt/rustwide/cargo-home/bin/cargo" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3477eaf2454741ed90f9d436b692c1fcf28332bdbd8c124de32080120e8eeaf0
[INFO] running `Command { std: "docker" "start" "-a" "3477eaf2454741ed90f9d436b692c1fcf28332bdbd8c124de32080120e8eeaf0", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: syn v0.14.9
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/snakers-c3e5811f7b40615c)
[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" "3477eaf2454741ed90f9d436b692c1fcf28332bdbd8c124de32080120e8eeaf0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3477eaf2454741ed90f9d436b692c1fcf28332bdbd8c124de32080120e8eeaf0", kill_on_drop: false }`
[INFO] [stdout] 3477eaf2454741ed90f9d436b692c1fcf28332bdbd8c124de32080120e8eeaf0