[INFO] cloning repository https://github.com/sector-f/prepend
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sector-f/prepend" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsector-f%2Fprepend", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsector-f%2Fprepend'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 97f905b50808d6898e961aeee054b3aedfd53735
[INFO] testing sector-f/prepend against master#b70888601af92f6cdc0364abab3446e418b91d36 for pr-86479
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsector-f%2Fprepend" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sector-f/prepend on toolchain b70888601af92f6cdc0364abab3446e418b91d36
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sector-f/prepend
[INFO] finished tweaking git repo https://github.com/sector-f/prepend
[INFO] tweaked toml for git repo https://github.com/sector-f/prepend written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/sector-f/prepend already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 445fe13c1cd3235bd2a98d6648e36d35d52fbf183407adf77933841bb7d44de9
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "445fe13c1cd3235bd2a98d6648e36d35d52fbf183407adf77933841bb7d44de9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "445fe13c1cd3235bd2a98d6648e36d35d52fbf183407adf77933841bb7d44de9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "445fe13c1cd3235bd2a98d6648e36d35d52fbf183407adf77933841bb7d44de9", kill_on_drop: false }`
[INFO] [stdout] 445fe13c1cd3235bd2a98d6648e36d35d52fbf183407adf77933841bb7d44de9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b78e90aa5820791632e62e03af8bea80be61c6ef44dadfbdfa495582a16068d6
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b78e90aa5820791632e62e03af8bea80be61c6ef44dadfbdfa495582a16068d6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.10
[INFO] [stderr]    Compiling bitflags v0.5.0
[INFO] [stderr]    Compiling ansi_term v0.7.2
[INFO] [stderr]    Compiling unicode-width v0.1.3
[INFO] [stderr]    Compiling vec_map v0.6.0
[INFO] [stderr]    Compiling clap v2.3.0
[INFO] [stderr]    Compiling prepend v2.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/prepend.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     try!(openfile.read_to_end(&mut file_buffer));
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/prepend.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     try!(openfile.set_len(0));
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/prepend.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     try!(openfile.write_all(&stdin_buffer));
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/prepend.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     try!(openfile.write_all(&file_buffer));
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/prepend.rs:11:24
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut openfile = try!{
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/prepend.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     try!(openfile.read_to_end(&mut file_buffer));
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/prepend.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 |     try!(stdout().write_all(&file_buffer));
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/prepend.rs:30:24
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let mut openfile = try!{
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.98s
[INFO] running `Command { std: "docker" "inspect" "b78e90aa5820791632e62e03af8bea80be61c6ef44dadfbdfa495582a16068d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b78e90aa5820791632e62e03af8bea80be61c6ef44dadfbdfa495582a16068d6", kill_on_drop: false }`
[INFO] [stdout] b78e90aa5820791632e62e03af8bea80be61c6ef44dadfbdfa495582a16068d6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 40dffa06d28ff8a5ac9b093d8b5aa904ee8241b01be6e254bcda515227e47869
[INFO] running `Command { std: "docker" "start" "-a" "40dffa06d28ff8a5ac9b093d8b5aa904ee8241b01be6e254bcda515227e47869", kill_on_drop: false }`
[INFO] [stderr]    Compiling prepend v2.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/prepend.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     try!(openfile.read_to_end(&mut file_buffer));
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/prepend.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     try!(openfile.set_len(0));
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/prepend.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     try!(openfile.write_all(&stdin_buffer));
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/prepend.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     try!(openfile.write_all(&file_buffer));
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/prepend.rs:11:24
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut openfile = try!{
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/prepend.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     try!(openfile.read_to_end(&mut file_buffer));
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/prepend.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 |     try!(stdout().write_all(&file_buffer));
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/prepend.rs:30:24
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let mut openfile = try!{
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.22s
[INFO] running `Command { std: "docker" "inspect" "40dffa06d28ff8a5ac9b093d8b5aa904ee8241b01be6e254bcda515227e47869", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40dffa06d28ff8a5ac9b093d8b5aa904ee8241b01be6e254bcda515227e47869", kill_on_drop: false }`
[INFO] [stdout] 40dffa06d28ff8a5ac9b093d8b5aa904ee8241b01be6e254bcda515227e47869
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8a8c81cd2b70eec1467754c1fcbe3f5b27062d7a513b55e536669068ffa3ff21
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8a8c81cd2b70eec1467754c1fcbe3f5b27062d7a513b55e536669068ffa3ff21", kill_on_drop: false }`
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/prepend.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     try!(openfile.read_to_end(&mut file_buffer));
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/prepend.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     try!(openfile.set_len(0));
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/prepend.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     try!(openfile.write_all(&stdin_buffer));
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/prepend.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     try!(openfile.write_all(&file_buffer));
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/prepend.rs:11:24
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let mut openfile = try!{
[INFO] [stderr]    |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/prepend.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     try!(openfile.read_to_end(&mut file_buffer));
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/prepend.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     try!(stdout().write_all(&file_buffer));
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/prepend.rs:30:24
[INFO] [stderr]    |
[INFO] [stderr] 30 |     let mut openfile = try!{
[INFO] [stderr]    |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `prepend` (bin "prepend" test) generated 8 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/prepend-6aabe83161d7b9c9)
[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" "8a8c81cd2b70eec1467754c1fcbe3f5b27062d7a513b55e536669068ffa3ff21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a8c81cd2b70eec1467754c1fcbe3f5b27062d7a513b55e536669068ffa3ff21", kill_on_drop: false }`
[INFO] [stdout] 8a8c81cd2b70eec1467754c1fcbe3f5b27062d7a513b55e536669068ffa3ff21